This document provides a service manual for tractor models T8010 through T8050. It describes the primary hydraulic power system, including the three hydraulic pumps that are driven by the transmission. A pressure and flow compensating piston pump supplies hydraulic flow to priority valves and then to steering, remote valves, and the three point hitch. A dual gear pump has front and rear sections, with the front supplying regulated pressure to circuits like brakes and transmission, and the rear supplying charge flow to the piston pump. An optional high flow piston pump is also described that provides higher hydraulic flow.
The document provides instructions for maintaining and repairing a Clark-Hurth torque converter. It begins with an overview of how torque converters and transmissions function together in the powertrain to deliver engine power to the wheels. It then provides detailed sectional views and parts identification diagrams to familiarize mechanics with the internal components. The remainder of the document provides step-by-step instructions for disassembling, cleaning, inspecting, and reassembling the torque converter. It also includes troubleshooting guides and other maintenance procedures.
Hyundai hsl650 7 skid steer loader service repair manualfjjskekdmmse
The document provides instructions for removing, installing, and servicing a main hydraulic pump. It describes the pump components and structure in 4 parts. It also covers the pump's general description, transmission hydraulic support system, controls and options, start up procedure, and maintenance requirements. The start up procedure cautions that certain steps require disabling the machine to prevent injury and outlines filling, priming, and testing the pump system. Maintenance involves checking fluid levels and changing the fluid and filter every 500 hours.
Steam Turbine Lube Oil System Protections Using SCADA & PLCNilesh Jha
Steam Turbine Protection System is designed with today technology to operate the thermal power plants in safe and reliable manner. The protection system operates only when any of the control system set point parameter is exceeded, and the steam turbine will damaged if it continues to operate. This paper presents overview of the steam turbine protection logics of lube of system and implementation for smooth automatic operation by using SIMATIC S7 PLC programming along with monitoring SCADA SYSTEM by using WinCC software.
Demand for high quality, greater efficiency and an automated machine has increased day by day in the industrial sector as well as power plants [1]. Power plants require continuous monitoring and inspection at frequent intervals. There are possibilities of errors at measuring and various stages involved with human workers and also the lack of few features of microcontrollers. Thus this paper takes a sincere attempt to explain the advantages that will be obtained by implementing automation system. The turbine lube oil system control which is the most important part of any power plant, and its automation is the precise effort of this paper. In order to automate a power plant and minimize human intervention, there is a need to develop PLC based system along with monitoring SCADA system that monitors the plant and helps reduce the errors caused by humans [2]. The internal storage of instruction of PLC is used for implementing function to control various types of machines and processes through digital or analog input/output modules. PLC systems are used to monitor and control a plant or equipment in industries such as power plants, energy, oil and gas refining and transportation.
Caterpillar cat d8 l track type tractor dozer bulldozer (prefix 7jc) service ...ufjkskemfseol
This document provides instructions for removing and installing a torque divider from a Caterpillar D8L track-type tractor. It describes in detail:
1) Removing the torque divider by draining oil, disconnecting lines, removing bolts, and lowering it with a hoist.
2) Disassembling the torque divider by removing snap rings, planet carrier, shafts, gears, seals, and other internal components.
3) Reassembling the torque divider by installing new components as needed, pressing in bearings and seals, and torquing bolts to the specified values.
Caterpillar cat d8 l track type tractor dozer bulldozer (prefix 4fb) service ...ufjkskemfseol
1) The document provides instructions for removing and installing the high-low transmission on a D8L track-type tractor.
2) Over 50 steps are outlined for disassembling the transmission down to individual components and reassembling it.
3) Key steps include removing the transmission from the engine using lifting tools, taking apart the clutch groups and planetary components, and cleaning and inspecting all parts before reassembly.
Caterpillar cat d5 c track type tractor dozer bulldozer (prefix 3mk) service ...ufjkskemfseol
The document provides instructions for servicing components of a D5C track-type tractor, including removing and installing the drive shaft, steering clutch control valves, steering clutches, and disassembling the steering clutches. The procedures include removing covers, disconnecting linkages, draining oil, and removing individual parts like cylinders, drums, shafts, and seals. Torque specifications and sealant/lubricant types are provided.
Caterpillar cat 994 h wheel loader (prefix dwc) service repair manual (dwc000...ufjkskemfseol
This document provides instructions for disassembling and assembling the piston pump that controls steering on a Caterpillar 994H wheel loader. The summary is:
1. The piston pump must be disassembled by removing various components like bearings, seals, pins, and plates in the specified order while using the appropriate tools.
2. Assembly is done in reverse order, ensuring proper placement and installation of each part. Special tools are used to set clearances and install retaining rings.
3. Once assembled, the piston pump is installed back onto the wheel loader and hydraulic lines are reconnected.
Caterpillar cat 994 f wheel loader (prefix 442) service repair manual (442000...ufjkskemfseol
1. The document provides instructions for removing and installing the front drive housing and vibration damper of a Caterpillar 994F wheel loader.
2. To remove the front drive housing, various components must first be removed, including the oil filter base, crankshaft seal, and accessory drive. Tools and lifting devices are needed to remove the housing.
3. To remove the vibration damper, the pulley, hub, and bolts must be removed. Guides bolts and lifting devices are used to maneuver the damper components. Proper lubrication and torque specifications are required for reinstallation.
The document provides instructions for maintaining and repairing a Clark-Hurth torque converter. It begins with an overview of how torque converters and transmissions function together in the powertrain to deliver engine power to the wheels. It then provides detailed sectional views and parts identification diagrams to familiarize mechanics with the internal components. The remainder of the document provides step-by-step instructions for disassembling, cleaning, inspecting, and reassembling the torque converter. It also includes troubleshooting guides and other maintenance procedures.
Hyundai hsl650 7 skid steer loader service repair manualfjjskekdmmse
The document provides instructions for removing, installing, and servicing a main hydraulic pump. It describes the pump components and structure in 4 parts. It also covers the pump's general description, transmission hydraulic support system, controls and options, start up procedure, and maintenance requirements. The start up procedure cautions that certain steps require disabling the machine to prevent injury and outlines filling, priming, and testing the pump system. Maintenance involves checking fluid levels and changing the fluid and filter every 500 hours.
Steam Turbine Lube Oil System Protections Using SCADA & PLCNilesh Jha
Steam Turbine Protection System is designed with today technology to operate the thermal power plants in safe and reliable manner. The protection system operates only when any of the control system set point parameter is exceeded, and the steam turbine will damaged if it continues to operate. This paper presents overview of the steam turbine protection logics of lube of system and implementation for smooth automatic operation by using SIMATIC S7 PLC programming along with monitoring SCADA SYSTEM by using WinCC software.
Demand for high quality, greater efficiency and an automated machine has increased day by day in the industrial sector as well as power plants [1]. Power plants require continuous monitoring and inspection at frequent intervals. There are possibilities of errors at measuring and various stages involved with human workers and also the lack of few features of microcontrollers. Thus this paper takes a sincere attempt to explain the advantages that will be obtained by implementing automation system. The turbine lube oil system control which is the most important part of any power plant, and its automation is the precise effort of this paper. In order to automate a power plant and minimize human intervention, there is a need to develop PLC based system along with monitoring SCADA system that monitors the plant and helps reduce the errors caused by humans [2]. The internal storage of instruction of PLC is used for implementing function to control various types of machines and processes through digital or analog input/output modules. PLC systems are used to monitor and control a plant or equipment in industries such as power plants, energy, oil and gas refining and transportation.
Caterpillar cat d8 l track type tractor dozer bulldozer (prefix 7jc) service ...ufjkskemfseol
This document provides instructions for removing and installing a torque divider from a Caterpillar D8L track-type tractor. It describes in detail:
1) Removing the torque divider by draining oil, disconnecting lines, removing bolts, and lowering it with a hoist.
2) Disassembling the torque divider by removing snap rings, planet carrier, shafts, gears, seals, and other internal components.
3) Reassembling the torque divider by installing new components as needed, pressing in bearings and seals, and torquing bolts to the specified values.
Caterpillar cat d8 l track type tractor dozer bulldozer (prefix 4fb) service ...ufjkskemfseol
1) The document provides instructions for removing and installing the high-low transmission on a D8L track-type tractor.
2) Over 50 steps are outlined for disassembling the transmission down to individual components and reassembling it.
3) Key steps include removing the transmission from the engine using lifting tools, taking apart the clutch groups and planetary components, and cleaning and inspecting all parts before reassembly.
Caterpillar cat d5 c track type tractor dozer bulldozer (prefix 3mk) service ...ufjkskemfseol
The document provides instructions for servicing components of a D5C track-type tractor, including removing and installing the drive shaft, steering clutch control valves, steering clutches, and disassembling the steering clutches. The procedures include removing covers, disconnecting linkages, draining oil, and removing individual parts like cylinders, drums, shafts, and seals. Torque specifications and sealant/lubricant types are provided.
Caterpillar cat 994 h wheel loader (prefix dwc) service repair manual (dwc000...ufjkskemfseol
This document provides instructions for disassembling and assembling the piston pump that controls steering on a Caterpillar 994H wheel loader. The summary is:
1. The piston pump must be disassembled by removing various components like bearings, seals, pins, and plates in the specified order while using the appropriate tools.
2. Assembly is done in reverse order, ensuring proper placement and installation of each part. Special tools are used to set clearances and install retaining rings.
3. Once assembled, the piston pump is installed back onto the wheel loader and hydraulic lines are reconnected.
Caterpillar cat 994 f wheel loader (prefix 442) service repair manual (442000...ufjkskemfseol
1. The document provides instructions for removing and installing the front drive housing and vibration damper of a Caterpillar 994F wheel loader.
2. To remove the front drive housing, various components must first be removed, including the oil filter base, crankshaft seal, and accessory drive. Tools and lifting devices are needed to remove the housing.
3. To remove the vibration damper, the pulley, hub, and bolts must be removed. Guides bolts and lifting devices are used to maneuver the damper components. Proper lubrication and torque specifications are required for reinstallation.
Caterpillar cat 994 d wheel loader (prefix 3tz) service repair manual (3tz000...ufjkskemfseol
This document provides instructions for removing the engine oil pump from a Caterpillar 994D wheel loader. It describes draining the coolant, disconnecting electrical connections, and removing mounting bolts and brackets. Special tools are required to lift the oil pump, which weighs approximately 45 kg, away from the drive mechanism.
The document provides instructions for servicing components of a 994 wheel loader, including:
- Removing and installing the supplemental steer pump, which involves removing hydraulic lines and bolts.
- Disassembling and assembling the supplemental steer pump, which involves removing seals, gears, plates and installing them in reverse order.
- Removing and installing the steering control valve, which involves disconnecting hydraulic lines and removing mounting bolts.
- Disassembling and assembling the steering control valve, which involves removing plugs, springs, valves and seals and installing them in reverse order.
- Removing and installing the steering neutralizer valve, which involves disconnecting hydraulic lines and removing mounting bolts.
Caterpillar cat 993 k wheel loader (prefix z9k) service repair manual (z9k000...ufjkskemfseol
This document provides instructions for disassembling the transmission planetary gears of a 993K wheel loader. It is a 26 step process that includes removing housing components, shafts, bearings, seals, springs, discs, and plates. Special tools are required, and parts should be cleaned before assembly. Detailed illustrations are provided for each step to ensure correct disassembly.
Caterpillar cat 993 k wheel loader (prefix z8z) service repair manual (z8z000...ufjkskemfseol
This document provides instructions for disassembling and assembling the parking brake on a 993K Wheel Loader. It describes removing components like the brake housing, pistons, discs, and shaft. It then explains assembling these components in reverse order. Special tools are listed and safety precautions mentioned. The process involves 17 detailed steps over two procedures for disassembly and assembly.
Caterpillar cat 993 k wheel loader (prefix z8d) service repair manual (z8d000...ufjkskemfseol
This document provides instructions for removing and installing various engine components on a Caterpillar 993K wheel loader, including:
- Inlet and exhaust valves, guides, and seat inserts
- Engine oil filter base
- Engine oil cooler
The procedures describe using various tools to remove parts like the cylinder head, valves, guides, filters, hoses, and the oil cooler assembly. Installation is generally the reverse of removal, with instructions to clean parts, apply sealant or lubricant, and torque fasteners to the specified values. Safety notices warn of spring hazards and keeping parts clean to prevent wear.
Caterpillar cat 993 k wheel loader (prefix z4z) service repair manual (z4z000...ufjkskemfseol
This document provides instructions for disassembling and assembling the parking brake on a Caterpillar 993K Wheel Loader. It describes removing components like the brake housing, pistons, discs, and shaft. It then explains assembling these components in reverse order, noting specific installation steps and torque specifications for the bolts. Tools required are also listed. The overall process involves carefully removing spring-loaded components and reinstalling them to engage the parking brake.
Caterpillar cat 993 k wheel loader (prefix z4d) service repair manual (z4d000...ufjkskemfseol
The document provides instructions for disassembling and assembling the service brake and final drive/wheel components of a Caterpillar 993K wheel loader. The service brake disassembly involves removing reaction plates, discs, springs and other parts. Final drive/wheel disassembly requires removing the planetary carrier, gears, hub and ring gear, bearings and other components. Detailed steps and illustrations are provided to guide mechanics through the process while ensuring safety and using the proper tools.
Caterpillar cat 993 k wheel loader (prefix lwa) service repair manual (lwa000...ufjkskemfseol
This document provides instructions for removing and installing various components of a Caterpillar 993K wheel loader engine, including:
1) Removing and reinstalling the rear power take-off (RPTO) which involves removing several nuts, bearings, and gears.
2) Removing and installing the vibration damper and pulley by removing bolts, spacers, and lifting the damper and pulley components.
3) The instructions are illustrated with diagrams and provide details on required tools and torque specifications for reassembling components.
Caterpillar cat 992 k wheel loader (prefix rm2) service repair manual (rm2000...ufjkskemfseol
The document provides instructions for removing and installing various components of a Caterpillar 992K wheel loader, including:
1) Removing and disassembling the rear power take-off, which involves using various tools to remove nuts, bearings, and other parts.
2) Removing and installing the vibration damper and pulley, which requires lifting devices and guide studs to position the heavy damper and adapter.
3) Removing and installing the rear power take-off, which involves lifting the drive gear and attaching lifting brackets before tightening nuts and bolts.
Caterpillar cat 983 b track loader (prefix 58x) service repair manual (58x000...ufjkskemfseol
This document provides instructions for servicing components of a 983B track loader powered by a 3406 engine, including:
- Removing and installing fuel valve adapters in the cylinder head
- Disassembling and assembling the automatic timing advance mechanism
- Removing and installing fuel injection lines
- Disassembling the fuel transfer pump
The instructions include detailed steps and diagrams to guide removal and installation of parts, as well as specifications for proper torque and adjustments.
Caterpillar cat 966 k wheel loader (prefix tfs) service repair manual (tfs000...ufjkskemfseol
1) The document provides instructions for assembling the piston pump that controls steering on a Caterpillar 966K wheel loader. It details 33 steps for installing various components like bearings, seals, pistons, and fasteners.
2) Procedures are also given for removing and installing the secondary steering pump, electric motor, control valve, and disassembling the secondary steering valve. Various illustrations supplement the text instructions.
3) Safety precautions are noted, including wearing protective equipment when working with spring-loaded parts to avoid injury from parts propelled by released spring force. Torque specifications are provided for fasteners.
Caterpillar cat 950 h wheel loader (prefix jlx) service repair manual (jlx000...ufjkskemfseol
This document provides instructions for connecting the frame of a 950H wheel loader. It involves assembling top and lower hitch bearings using various tools, then lifting and connecting the loader frame to the rear frame. Various components like pins, plates, and seals are installed. Alignment is important when installing pins to connect the frames. Finally, hydraulic and electrical connections are made and fluids added before installing remaining parts.
Caterpillar cat 950 h wheel loader (prefix jad) service repair manual (jad000...ufjkskemfseol
The document provides instructions for installing the gear pump for an axle oil cooler on a 950H wheel loader. It outlines 20 steps to assemble the pump components in the proper order, attaching seals, bearings, gears, and covers. The final step is to install the assembled axle oil cooler pump and clutch. A second section then provides instructions for installing the fuel transfer pump on a C7 engine, including positioning the pump and tightening bolts.
Caterpillar cat 950 h wheel loader (prefix j5j) service repair manual (j5j015...ufjkskemfseol
1. The document provides disassembly and assembly instructions for a piston pump used in a wheel loader.
2. It details 41 steps to disassemble the pump by removing components like the head assembly, piston assemblies, springs, seals, and bearings.
3. Reassembly requires properly installing those same components in reverse order, and includes procedures to set the proper bearing preload using shims and feeler gauges.
Caterpillar cat 950 h wheel loader (prefix j5j) service repair manual (j5j000...ufjkskemfseol
The document provides instructions for disassembling and assembling the freewheel stator component of a torque converter. It outlines 35 steps to disassemble the component, removing parts like the impeller, carrier shaft, stator, and turbine. It then lists 12 steps for reassembling the component, including installing the turbine, stator, carrier shaft, impeller, seals, and other parts. Cleanliness is emphasized as important during disassembly and assembly.
Caterpillar cat 936 e wheel loader (prefix 33z) service repair manual (33z030...ufjkskemfseol
This document provides instructions for removing and installing the flywheel housing on a Caterpillar 936E wheel loader with a 3304 engine. It describes:
1) Removing the flywheel, crankshaft rear seal, oil pan plate bolts, and flywheel housing bolts to remove the housing.
2) Cleaning parts and installing the housing with bolts, checking gaskets, and reinstalling components like the oil pan plate.
3) The process involves several specific steps and the use of tools to safely and properly remove and replace the flywheel housing.
1) The document provides instructions for disassembling and assembling the fuel injection pump housing of a Caterpillar 3304 engine. It describes removing components like the fuel rack, lifters, camshaft and bearings during disassembly.
2) The assembly procedure describes pressing in new bearings, installing the camshaft and washer, fitting lifters and the fuel rack.
3) Separate sections provide instructions for installing the assembled fuel injection pump housing and governor back onto the engine, ensuring correct timing by using special tools to align camshaft notches and bolt holes.
Caterpillar cat 930 h wheel loader (prefix ftd) service repair manual (ftd000...ufjkskemfseol
This document provides instructions for installing pistons and connecting rods in a C6.6 engine. It describes using tools to rotate the crankshaft, lubricating components, inserting the piston and connecting rod assembly into the cylinder, installing a new connecting rod cap and bolts, and torquing the bolts to the specified values. The instructions are to be repeated for each piston and connecting rod installation.
Caterpillar cat 930 h wheel loader (prefix dhc) service repair manual (dhc000...ufjkskemfseol
This service repair manual provides instructions for connecting the loader frame and rear frame of a 930H wheel loader. It outlines 54 steps to reconnect components like bearings, seals, pins and hoses. Tools and safety precautions are listed. The manual also describes separating and reconnecting the steering frame lock between the front and rear frames.
This document provides instructions for installing pistons and connecting rods in a C6.6 engine. The steps include: cleaning and lubricating components, inserting the piston and connecting rod assembly into the cylinder, installing the connecting rod cap and tightening new bolts to specified torques, and repeating for remaining cylinders. Tools required include a crankshaft turning tool, piston ring compressor, and degree wheel. Proper identification and orientation of parts is emphasized.
Caterpillar cat 994 d wheel loader (prefix 3tz) service repair manual (3tz000...ufjkskemfseol
This document provides instructions for removing the engine oil pump from a Caterpillar 994D wheel loader. It describes draining the coolant, disconnecting electrical connections, and removing mounting bolts and brackets. Special tools are required to lift the oil pump, which weighs approximately 45 kg, away from the drive mechanism.
The document provides instructions for servicing components of a 994 wheel loader, including:
- Removing and installing the supplemental steer pump, which involves removing hydraulic lines and bolts.
- Disassembling and assembling the supplemental steer pump, which involves removing seals, gears, plates and installing them in reverse order.
- Removing and installing the steering control valve, which involves disconnecting hydraulic lines and removing mounting bolts.
- Disassembling and assembling the steering control valve, which involves removing plugs, springs, valves and seals and installing them in reverse order.
- Removing and installing the steering neutralizer valve, which involves disconnecting hydraulic lines and removing mounting bolts.
Caterpillar cat 993 k wheel loader (prefix z9k) service repair manual (z9k000...ufjkskemfseol
This document provides instructions for disassembling the transmission planetary gears of a 993K wheel loader. It is a 26 step process that includes removing housing components, shafts, bearings, seals, springs, discs, and plates. Special tools are required, and parts should be cleaned before assembly. Detailed illustrations are provided for each step to ensure correct disassembly.
Caterpillar cat 993 k wheel loader (prefix z8z) service repair manual (z8z000...ufjkskemfseol
This document provides instructions for disassembling and assembling the parking brake on a 993K Wheel Loader. It describes removing components like the brake housing, pistons, discs, and shaft. It then explains assembling these components in reverse order. Special tools are listed and safety precautions mentioned. The process involves 17 detailed steps over two procedures for disassembly and assembly.
Caterpillar cat 993 k wheel loader (prefix z8d) service repair manual (z8d000...ufjkskemfseol
This document provides instructions for removing and installing various engine components on a Caterpillar 993K wheel loader, including:
- Inlet and exhaust valves, guides, and seat inserts
- Engine oil filter base
- Engine oil cooler
The procedures describe using various tools to remove parts like the cylinder head, valves, guides, filters, hoses, and the oil cooler assembly. Installation is generally the reverse of removal, with instructions to clean parts, apply sealant or lubricant, and torque fasteners to the specified values. Safety notices warn of spring hazards and keeping parts clean to prevent wear.
Caterpillar cat 993 k wheel loader (prefix z4z) service repair manual (z4z000...ufjkskemfseol
This document provides instructions for disassembling and assembling the parking brake on a Caterpillar 993K Wheel Loader. It describes removing components like the brake housing, pistons, discs, and shaft. It then explains assembling these components in reverse order, noting specific installation steps and torque specifications for the bolts. Tools required are also listed. The overall process involves carefully removing spring-loaded components and reinstalling them to engage the parking brake.
Caterpillar cat 993 k wheel loader (prefix z4d) service repair manual (z4d000...ufjkskemfseol
The document provides instructions for disassembling and assembling the service brake and final drive/wheel components of a Caterpillar 993K wheel loader. The service brake disassembly involves removing reaction plates, discs, springs and other parts. Final drive/wheel disassembly requires removing the planetary carrier, gears, hub and ring gear, bearings and other components. Detailed steps and illustrations are provided to guide mechanics through the process while ensuring safety and using the proper tools.
Caterpillar cat 993 k wheel loader (prefix lwa) service repair manual (lwa000...ufjkskemfseol
This document provides instructions for removing and installing various components of a Caterpillar 993K wheel loader engine, including:
1) Removing and reinstalling the rear power take-off (RPTO) which involves removing several nuts, bearings, and gears.
2) Removing and installing the vibration damper and pulley by removing bolts, spacers, and lifting the damper and pulley components.
3) The instructions are illustrated with diagrams and provide details on required tools and torque specifications for reassembling components.
Caterpillar cat 992 k wheel loader (prefix rm2) service repair manual (rm2000...ufjkskemfseol
The document provides instructions for removing and installing various components of a Caterpillar 992K wheel loader, including:
1) Removing and disassembling the rear power take-off, which involves using various tools to remove nuts, bearings, and other parts.
2) Removing and installing the vibration damper and pulley, which requires lifting devices and guide studs to position the heavy damper and adapter.
3) Removing and installing the rear power take-off, which involves lifting the drive gear and attaching lifting brackets before tightening nuts and bolts.
Caterpillar cat 983 b track loader (prefix 58x) service repair manual (58x000...ufjkskemfseol
This document provides instructions for servicing components of a 983B track loader powered by a 3406 engine, including:
- Removing and installing fuel valve adapters in the cylinder head
- Disassembling and assembling the automatic timing advance mechanism
- Removing and installing fuel injection lines
- Disassembling the fuel transfer pump
The instructions include detailed steps and diagrams to guide removal and installation of parts, as well as specifications for proper torque and adjustments.
Caterpillar cat 966 k wheel loader (prefix tfs) service repair manual (tfs000...ufjkskemfseol
1) The document provides instructions for assembling the piston pump that controls steering on a Caterpillar 966K wheel loader. It details 33 steps for installing various components like bearings, seals, pistons, and fasteners.
2) Procedures are also given for removing and installing the secondary steering pump, electric motor, control valve, and disassembling the secondary steering valve. Various illustrations supplement the text instructions.
3) Safety precautions are noted, including wearing protective equipment when working with spring-loaded parts to avoid injury from parts propelled by released spring force. Torque specifications are provided for fasteners.
Caterpillar cat 950 h wheel loader (prefix jlx) service repair manual (jlx000...ufjkskemfseol
This document provides instructions for connecting the frame of a 950H wheel loader. It involves assembling top and lower hitch bearings using various tools, then lifting and connecting the loader frame to the rear frame. Various components like pins, plates, and seals are installed. Alignment is important when installing pins to connect the frames. Finally, hydraulic and electrical connections are made and fluids added before installing remaining parts.
Caterpillar cat 950 h wheel loader (prefix jad) service repair manual (jad000...ufjkskemfseol
The document provides instructions for installing the gear pump for an axle oil cooler on a 950H wheel loader. It outlines 20 steps to assemble the pump components in the proper order, attaching seals, bearings, gears, and covers. The final step is to install the assembled axle oil cooler pump and clutch. A second section then provides instructions for installing the fuel transfer pump on a C7 engine, including positioning the pump and tightening bolts.
Caterpillar cat 950 h wheel loader (prefix j5j) service repair manual (j5j015...ufjkskemfseol
1. The document provides disassembly and assembly instructions for a piston pump used in a wheel loader.
2. It details 41 steps to disassemble the pump by removing components like the head assembly, piston assemblies, springs, seals, and bearings.
3. Reassembly requires properly installing those same components in reverse order, and includes procedures to set the proper bearing preload using shims and feeler gauges.
Caterpillar cat 950 h wheel loader (prefix j5j) service repair manual (j5j000...ufjkskemfseol
The document provides instructions for disassembling and assembling the freewheel stator component of a torque converter. It outlines 35 steps to disassemble the component, removing parts like the impeller, carrier shaft, stator, and turbine. It then lists 12 steps for reassembling the component, including installing the turbine, stator, carrier shaft, impeller, seals, and other parts. Cleanliness is emphasized as important during disassembly and assembly.
Caterpillar cat 936 e wheel loader (prefix 33z) service repair manual (33z030...ufjkskemfseol
This document provides instructions for removing and installing the flywheel housing on a Caterpillar 936E wheel loader with a 3304 engine. It describes:
1) Removing the flywheel, crankshaft rear seal, oil pan plate bolts, and flywheel housing bolts to remove the housing.
2) Cleaning parts and installing the housing with bolts, checking gaskets, and reinstalling components like the oil pan plate.
3) The process involves several specific steps and the use of tools to safely and properly remove and replace the flywheel housing.
1) The document provides instructions for disassembling and assembling the fuel injection pump housing of a Caterpillar 3304 engine. It describes removing components like the fuel rack, lifters, camshaft and bearings during disassembly.
2) The assembly procedure describes pressing in new bearings, installing the camshaft and washer, fitting lifters and the fuel rack.
3) Separate sections provide instructions for installing the assembled fuel injection pump housing and governor back onto the engine, ensuring correct timing by using special tools to align camshaft notches and bolt holes.
Caterpillar cat 930 h wheel loader (prefix ftd) service repair manual (ftd000...ufjkskemfseol
This document provides instructions for installing pistons and connecting rods in a C6.6 engine. It describes using tools to rotate the crankshaft, lubricating components, inserting the piston and connecting rod assembly into the cylinder, installing a new connecting rod cap and bolts, and torquing the bolts to the specified values. The instructions are to be repeated for each piston and connecting rod installation.
Caterpillar cat 930 h wheel loader (prefix dhc) service repair manual (dhc000...ufjkskemfseol
This service repair manual provides instructions for connecting the loader frame and rear frame of a 930H wheel loader. It outlines 54 steps to reconnect components like bearings, seals, pins and hoses. Tools and safety precautions are listed. The manual also describes separating and reconnecting the steering frame lock between the front and rear frames.
This document provides instructions for installing pistons and connecting rods in a C6.6 engine. The steps include: cleaning and lubricating components, inserting the piston and connecting rod assembly into the cylinder, installing the connecting rod cap and tightening new bolts to specified torques, and repeating for remaining cylinders. Tools required include a crankshaft turning tool, piston ring compressor, and degree wheel. Proper identification and orientation of parts is emphasized.
Charging and Fueling Infrastructure Grant: Round 2 by Brandt HertensteinForth
Brandt Hertenstein, Program Manager of the Electrification Coalition gave this presentation at the Forth and Electrification Coalition CFI Grant Program - Overview and Technical Assistance webinar on June 12, 2024.
Expanding Access to Affordable At-Home EV Charging by Vanessa WarheitForth
Vanessa Warheit, Co-Founder of EV Charging for All, gave this presentation at the Forth Addressing The Challenges of Charging at Multi-Family Housing webinar on June 11, 2024.
Understanding Catalytic Converter Theft:
What is a Catalytic Converter?: Learn about the function of catalytic converters in vehicles and why they are targeted by thieves.
Why are They Stolen?: Discover the valuable metals inside catalytic converters (such as platinum, palladium, and rhodium) that make them attractive to criminals.
Steps to Prevent Catalytic Converter Theft:
Parking Strategies: Tips on where and how to park your vehicle to reduce the risk of theft, such as parking in well-lit areas or secure garages.
Protective Devices: Overview of various anti-theft devices available, including catalytic converter locks, shields, and alarms.
Etching and Marking: The benefits of etching your vehicle’s VIN on the catalytic converter or using a catalytic converter marking kit to make it traceable and less appealing to thieves.
Surveillance and Monitoring: Recommendations for using security cameras and motion-sensor lights to deter thieves.
Statistics and Insights:
Theft Rates by Borough: Analysis of data to determine which borough in NYC experiences the highest rate of catalytic converter thefts.
Recent Trends: Current trends and patterns in catalytic converter thefts to help you stay aware of emerging hotspots and tactics used by thieves.
Benefits of This Presentation:
Awareness: Increase your awareness about catalytic converter theft and its impact on vehicle owners.
Practical Tips: Gain actionable insights and tips to effectively prevent catalytic converter theft.
Local Insights: Understand the specific risks in different NYC boroughs, helping you take targeted preventive measures.
This presentation aims to equip you with the knowledge and tools needed to protect your vehicle from catalytic converter theft, ensuring you are prepared and proactive in safeguarding your property.
Charging Fueling & Infrastructure (CFI) Program Resources by Cat PleinForth
Cat Plein, Development & Communications Director of Forth, gave this presentation at the Forth and Electrification Coalition CFI Grant Program - Overview and Technical Assistance webinar on June 12, 2024.
Welcome to ASP Cranes, your trusted partner for crane solutions in Raipur, Chhattisgarh! With years of experience and a commitment to excellence, we offer a comprehensive range of crane services tailored to meet your lifting and material handling needs.
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Charging Fueling & Infrastructure (CFI) Program by Kevin MillerForth
Kevin Miller, Senior Advisor, Business Models of the Joint Office of Energy and Transportation gave this presentation at the Forth and Electrification Coalition CFI Grant Program - Overview and Technical Assistance webinar on June 12, 2024.
EV Charging at MFH Properties by Whitaker JamiesonForth
Whitaker Jamieson, Senior Specialist at Forth, gave this presentation at the Forth Addressing The Challenges of Charging at Multi-Family Housing webinar on June 11, 2024.
Implementing ELDs or Electronic Logging Devices is slowly but surely becoming the norm in fleet management. Why? Well, integrating ELDs and associated connected vehicle solutions like fleet tracking devices lets businesses and their in-house fleet managers reap several benefits. Check out the post below to learn more.
2. Contents
INTRODUCTION
DISTRIBUTION SYSTEMS.............................................................A
PRIMARY HYDRAULIC POWER SYSTEM............................................... A.10.A
PRIMARY HYDRAULIC POWER SYSTEM Electro-hydraulic remote valve.............. A.10.C
PNEUMATIC SYSTEM .................................................................... A.20.A
ELECTRICAL POWER SYSTEM ......................................................... A.30.A
LIGHTING SYSTEM....................................................................... A.40.A
ELECTRONIC SYSTEM .................................................................. A.50.A
FAULT CODES ............................................................................ A.50.A
POWER PRODUCTION .................................................................B
ENGINE ................................................................................... B.10.A
FUEL AND INJECTION SYSTEM......................................................... B.20.A
ENGINE COOLANT SYSTEM ............................................................ B.50.A
LUBRICATION SYSTEM .................................................................. B.60.A
STARTING SYSTEM ...................................................................... B.80.A
POWER TRAIN.............................................................................C
TRANSMISSION Powershift .............................................................. C.20.E
REAR PTO Hydraulic..................................................................... C.40.C
BAR AXLE................................................................................. C.60.A
TRAVELLING................................................................................D
FRONT AXLE ............................................................................. D.10.A
2WD-4WD SYSTEM Hydraulic........................................................... D.14.C
STEERING Hydraulic..................................................................... D.20.C
SERVICE BRAKE Hydraulic.............................................................. D.30.C
PARKING BRAKE Hydraulic ............................................................. D.32.C
BRAKE CONNECTION Hydraulic ........................................................ D.34.C
BRAKE CONNECTION Pneumatic........................................................ D.34.E
SUSPENSION Hydraulic ................................................................. D.40.C
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3. WHEELS AND TRACKS Wheels......................................................... D.50.C
BODY AND STRUCTURE ..............................................................E
SHIELD.................................................................................... E.20.A
USER CONTROLS AND SEAT ........................................................... E.32.A
USER CONTROLS AND SEAT Operator seat ............................................ E.32.C
USER PLATFORM ........................................................................ E.34.A
ENVIRONMENT CONTROL Heating, ventilation and air-conditioning.................... E.40.D
SAFETY SECURITY ACCESSORIES Safety ............................................. E.50.B
WORKING ARM............................................................................H
HITCH Rear hitch......................................................................... H.10.C
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4. INTRODUCTION
WARNING
Hydraulic fluid escaping under pressure can have enough force to penetrate the skin. Hydraulic fluid may
also infect a minor cut or opening in the skin. If injured by escaping fluid, see a doctor at once. Serious
infection or reaction can result if medical treatment is not given immediately. Make sure all connections are
tight and that hoses and lines are in good condition before applying pressure to the system. Relieve all
pressure before disconnecting the lines or performing other work on the hydraulic system. To find a leak
under pressure use a small piece of cardboard or wood. Never use hands. Failure to comply could result in
death or serious injury.
M252A
WARNING
When removing hardened pins such as a pivot pin, or a hardened shaft, use a soft head (brass or bronze)
hammer or use a driver made from brass or bronze and a steel head hammer.
M497
WARNING
When using a hammer to remove and install pivot pins or separate parts using compressed air or using a
grinder, wear eye protection that completely encloses the eyes (approved goggles or other approved eye
protectors).
M498
WARNING
Use suitable floor (service) jacks or chain hoist to raise wheels or tracks off the floor. Always block machine
in placed with suitable safety stands.
M499
WARNING
When servicing or repairing the machine. Keep the shop floor and operators compartment and steps free of
oil, water, grease, tools, etc. Use an oil absorbing material and or shop cloths as required. Use safe practices
at all times.
M500
WARNING
Batteries contain acid and explosive gas. Explosions can result from sparks, flames or wrong cable con-
nections. To connect the jumper cables correctly to the battery of this machine see the Operators Manual.
Failure to follow these instructions can cause serious injury or death.
M504
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4
5. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Hydraulic pump - Dynamic description
T8010, T8020, T8030, T8040, T8050
The tractor uses three hydraulic pumps which are driven through a drive housing on the right side of the range trans-
mission. The pump drive housing gears are driven by the PTO drive line and all the pumps turn at approximately 1.33
times engine speed. A PFC (pressure and flow compensating) piston pump is attached to the front of the pump drive
housing, while the tandem gear pumps are attached to the rear of the pump drive housing.
The front section of the tandem gear pump supplies the regulated pressure circuit: brake valve, transmission control
valves, PTO and differential lock valve, auxiliary and hitch valve pilot circuits. The rear section supplies charge flow to
the PFC pump(s). The PFC pump supplies flow to the priority valve, which directs flow to the steering system, remote
valves and the three point hitch.
All hydraulic lines are equipped with O-ring face seals to ensure reliable, vibration-resistant connections.
Charge/lubrication pump
The charge/lubrication pump is the rear section of the dual gear pump and it is used to supply the main PFC pump
with a charged inlet condition to prevent cavitation. The pump also supplies lubrication and cooling requirements for
the transmission.
The pump draws oil from the transmission housing through a 100 mesh suction screen. The pump flow is directed
across the main filter assembly to provide clean charge and lubrication oil.
The pump flow rate at rated speed 2667 RPM( 2000 RPM engine speed) is 177.0 l/min (47.0 US gpm).
Regulated circuit pump
The regulated circuit pump is the front section of the tandem gear pump. The pump draws oil from the system reservoir
through a 100 mesh suction screen. The pump flow passes through the regulated circuit filter housing and into the
priority regulator valve. The priority regulator valve maintains the regulated pressure circuit at 22.4 - 24.5 bar (325
- 355 psi). The regulated pump flow supplies the PTO/differential lock valve, transmission control valves and brake
valve. The remote and hitch valves are also supplied with regulated pressure.
Once these circuits are satisfied, the excess regulated pump flow is directed through the oil coolers and joins up with
the charge pump flow at the downstream side of the main filter head.
The pump flow rate at rated speed of 2667 RPM ( 2000 RPM engine speed) is 102.0 l/min (27.0 US gpm).
PFC piston pump
The axial piston pump has a variable flow output and can operate at variable pressures. The pump matches the
hydraulic power output to the actual load requirements to ensure maximum efficiency and the minimum use of fuel.
The pump inlet is charged to prevent cavitation. The pump output flow is supplied to the priority regulator valve. The
priority regulator valve gives top priority to the steering system and trailer brake circuit. Once the steering system and
trailer brake circuits are satisfied the priority regulator valve supplies pump flow to the remote auxiliary valves and
three point hitch valve.
The maximum pump flow rate for the standard pump at rated speed of 2667 RPM ( 2000 RPM engine speed) is 146.0
l/min (38.6 US gpm).
NOTE: The standard pump system delivers approximately 113.6 l/min (30.0 US gpm) through a single remote sec-
tion. This is due to resistance created by oil flowing through restrictive passage ways and long lengths of tubing or
hose.
Optional high flow PFC piston pump
An optional high flow PFC piston pump is available. The high flow rate maximum pump flow rate at rated speed of
2667 RPM ( 2000 RPM engine speed) is 220 l/min (58 US gpm).
NOTE: The high flow pump system delivers approximately 113.6 l/min (30.0 US gpm) through a single remote sec-
tion. This is due to resistance created by oil flowing through restrictive passage ways and long lengths of tubing or
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6. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
hose. However, when operating two or more remote sections the high flow pump has approximately 75.7 l/min (20.0
US gpm) more flow than a standard pump system to supply the additional remote circuits.
RCPH07CCH026FAE 1
1. Charge/lubrication pump outlet (rear section) 3. High flow PFC piston pump
2. Regulated circuit pump outlet (front section) 4. Dual gear pump/regulated system filter housing
Optional Megaflow PFC piston pump
The axial piston pump has a variable flow output and can operate at variable pressures. The pump matches the
hydraulic power output to the actual load requirements to ensure maximum efficiency and the minimum use of fuel.
The maximum pump flow rate at rated speed 2667 RPM( 2000 RPM engine speed) is 117.0 l/min (31.0 US gpm).
The pump inlet is charged to prevent cavitation. The pump output flow is supplied directly to the remote auxiliary
manifold. The manifold is equipped with internal plugs to separate the dual flow supply flow, signal line pressure and
signal line pilot relief from the standard PFC piston pump circuit. The Megaflow pump supplies only the third, fourth
or fifth remote sections. The two PFC pump hydraulic circuits operate independently.
NOTE: The Megaflow pump system delivers approximately 113.6 l/min (30.0 US gpm) through a single remote sec-
tion. This is due to resistance created by oil flowing through restrictive passage ways and long lengths of tubing or
hose.
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7. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
RCPH07CCH027FAE 2
1. Megaflow signal line 4. Standard PFC pump
2. Megaflow outlet 5. Megaflow inlet
3. Megaflow PFC pump 6. Main filter assembly
Lubrication circuit
The lubrication flow is a combination of both dual gear pumps’ outputs – filtered charge pump flow and filtered/cooled
excess regulated circuit flow. Inlet charge pressure and lubrication are limited to 5.0 bar (75 psi) by a lube relief valve.
The lubrication circuit provides a low pressure flow of oil to lubricate and cool the following transmission components:
master clutch, bevel pinion gears, brakes, drop box, odd/even clutches, MFD/range, creep drive and PTO/differential
lock lube.
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8. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
RCPH07CCH029FAE 3
1. Left brake lube 6. Drop box lube
2. PTO lube supply 7. Right brake lube
3. Range lube 8. Charge pump to filter inlet
4. Master clutch lube
5. Odd/even lube
9. Oil cooler return to filter
RCPH07CCH021AAE 4
10. Lube relief hose
11. Drop box output lube (without creeper)
12. Drop box rear bearing lube
Regulated pressure circuits
The regulated circuit is supplied by the front dual gear pump. The pump flow passes through the regulated circuit
filter housing and onto the priority regulator valve. The pressure regulator portion of the valve maintains the regulated
pressure at 22.4 - 24.5 bar (325 - 355 psi).
The following components are supplied by the regulated circuit:
• speed transmission powershift valve,
• odd/even transmission powershift valve (includes creep and park brake),
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9. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
• range transmission powershift valve (includes MFD),
• PTO/differential lock valve,
• master clutch inching valve,
• brake valve,
• hitch valve pilot pressure,
• remote valve pilot pressure
• and MFD clutch supply.
RCPH07CCH023FAE 5
1. Range regulated supply tube 5. Master clutch diagnostic tube (See next view.)
2. Speed transmission control valve regulated supply,
upper tube
6. Transmission control valve regulated supply
3. Priority regulator valve to PTO valve
4. Priority regulator valve
7. Priority regulator valve excess to oil coolers
NOTE: Brake, hitch and remote valves regulated supply tubes not shown.
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10. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
RCPH07CCH022FAE 6
1. Master clutch diagnostic coupler
RCPH07CCH028BAE 7
2. Regulated circuit accumulator 3. Speed transmission control valve regulated supply,
lower tube
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11. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Tandem gear pump Charge and lubrication - Component
identification
T8010, T8020, T8030, T8040, T8050
RCPH07CCH020BAE 1
RCPH07CCH021BAE 2
1. Pump assembly 5. Lube relief valve assembly
2. Priority regulator valve 6. Pump inlet section
3. Regulator section inlet
4. Regulated circuit filter
7. Suction screen shroud
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12. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Motor return - Component identification
T8010, T8020, T8030, T8040, T8050
1. Case drain coupler
2. Motor return coupler
3. Motor return tube
RCPH07CCH034BAE 1
RCPH07CCH020AAE 2
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13. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Pump drive - Exploded view
T8010, T8020, T8030, T8040, T8050
RCPH07CCH653FBC 1
1. Pump drive housing 7. Bearing cup
2. Idler shaft 8. Bearing cone
3. Bearing 9. Driven gear
4. Spacer 10 Shim
5. Retaining ring 11. O-ring
6. Idler gear 12. Bearing cone
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14. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Control valve Priority/Regulator valve - Dynamic description
T8010, T8020, T8030, T8040, T8050
The priority/regulator valve assembly is located on the top right side of the range transmission. The assembly
contains:
• the priority spool,
• the regulator spool,
• and steering relief valve.
The front section of the dual gear pump and the pressure and flow compensating (PFC) piston pump supply oil to the
priority/regulator valve.
Priority spool ( supplied by the PFC piston pump)
Oil flows into the priority/regulator valve from the left side port (2). Steering has first priority: oil flows across the
priority spool (11) and out the steering supply port (3). There is a cross-drilled passage near the top of the priority
spool. Oil enters this orifice and starts to build pressure against the spring. As steering demand is satisfied, pressure
builds on the top of the priority spool and the spool moves down against its spring, opening a passage to the remote
and hitch circuits (13).
When the steering circuit is placed on demand, a pressure drop is created on the top end of the priority spool. Signal
and spring pressure work against pump outlet pressure, and the priority spool moves up to accommodate steering
demand.
Once steering demand is satisfied, pressure builds on the top of the priority spool and the spool shifts down to increase
flow to the remote and hitch circuits. When equipped with trailer brakes, oil is also supplied from the priority valve to
the trailer brakes.
RCPH07CCH004FAE 1
1. Priority regulator valve 7. Regulated supply
2. Supply from PFC pump 8. Regulated pressure adjustment
3. Supply to steering 9. Steering relief adjustment
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15. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
4. Regulated supply to system 10. Steering signal to hand pump
5. Excess flow to coolers 11. Priority spool
6. Regulated supply to brakes 13. Supply to remote valves
RCPH07CCH016GAE 2
1. Priority regulator valve 8. Regulated pressure adjustment
2. Supply from PFC piston pump 9. Steering relief adjustment
3. Supply to steering 10. Steering signal to hand pump
4. Regulated supply to system 11. Priority spool
5. Excess flow to coolers 12. Regulator spool
6. Regulated supply to brakes 13. Supply to remote valves
7. Regulated supply 14. Internal plug
Regulator spool (supplied by regulated pump section)
Regulated pump flow enters the priority/regulator valve at the right side port (7). Oil flows across the regulator spool
(12) and supplies all the regulated circuits through the side port (6) and top port (4). The oil also flows through the
orifice near the top of the regulator spool. This oil builds pressure and moves the regulator spool against the spring.
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16. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
This regulates pressure and maintains the 22.4 - 24.5 bar (325 - 355 psi) in the regulated circuits. These include the
transmission control valves, PTO/differential lock valve, brake valve and regulated pressure for remote valve and the
hitch valve pilot pressure.
When all regulated circuit demands are met, the regulator spool continues to maintain the 22.4 - 24.5 bar (325 - 355
psi) pressure and allows excess pump flow out the cooler supply port (5).
When a regulated circuit is activated, the regulator spool senses a momentary drop in pressure. The spring will
overcome the spool and move it up to increase flow of oil to meet the demand. As the demand is met, pressure again
builds on the top side of the spool through the orifice and moves the spool down to maintain regulated pressure.
RCPH07CCH004FAE 3
1. Priority regulator valve 8. Regulated pressure adjustment
2. Supply from PFC piston pump 9. Steering relief adjustment
3. Supply to steering 10. Steering signal to hand pump
4. Regulated supply to system 11. Priority spool
5. Excess flow to coolers 12. Regulator spool
6. Regulated supply to brakes 13. Supply to remote valves
7. Regulated supply 14. Internal plug
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17. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
RCPH07CCH016GAE 4
1. Priority regulator valve 8. Regulated pressure adjustment
2. Supply from PFC piston pump 9. Steering relief adjustment
3. Supply to steering 10. Steering signal to hand pump
4. Regulated supply to system 11. Priority spool
5. Excess flow to coolers 12. Regulator spool
6. Regulated supply to brakes 13. Supply to remote valves
7. Regulated supply 14. Internal plug
Priority regulator valve with pressure solenoid
NOTE: T8050 only.
The priority/regulator valve equipped with a pressure solenoid valve (1) which is not adjustable. The pressure solenoid
uses feedback from the pressure transducer, through the transmission controller, to maintain a tighter tolerance on
regulated system pressure. The solenoid maintains full regulated pressure to the transmission clutches regardless of
temperature or other demands on the regulated pressure circuit.
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18. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
RCPH07CCH020GAE 5
1. Pressure solenoid valve
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19. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Control valve Priority/Regulator valve - Exploded view
T8010, T8020, T8030, T8040
RCPH07CCH028GAE 1
1. Priority/regulator valve body 5. Pilot relief assembly
2. Priority valve spool 6. Orifice fitting
3. Regulator spool 7. Regulated pressure adjustment assembly
4. Logic check valve assembly 8. Internal plug
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20. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Control valve Priority/Regulator valve - Sectional view
T8010, T8020, T8030, T8040
RCPH07CCH016GAE 1
1. Priority and regulator valve 7. Regulator spool
2. Logic check valve assembly 8. Regulator spring
3. Internal plug 9. Lock nut
4. Priority spring 10. Adjusting plug
5. Priority valve spool 11. Pilot relief valve assembly
6. Plug 12. Orifice fitting body assembly
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21. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Control valve Priority/Regulator valve - Exploded view
T8050
RCPH07CCH027GAE 1
1. Priority/regulator valve body 7. Outer spring
2. Priority valve spool 8. Piston
3. Regulator spool 9. Inner spring
4. Logic check valve assembly 10. System pressure valve block
5. Pilot relief assembly
6. Orifice fitting
11. System pressure solenoid valve
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22. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Control valve Priority/Regulator valve - Sectional view
T8050
RCPH07CCH020GAE 1
1. Priority and regulator valve 7. Regulator spool
2. Logic check valve assembly 8. Inner spring
3. Internal plug 9. Outer spring
4. Priority spring 10. Piston
5. Priority valve spool 11. System pressure solenoid assembly
6. Plug 12. Orifice fitting body assembly
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23. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Pressure/flow compensating (PFC) pump - Dynamic description
T8010, T8020, T8030, T8040, T8050
NOTE: The principles of operation for the standard flow pump apply to both the optional high flow pump and Megaflow
pump systems. The illustrations below depict the standard flow pump.
Principle of Control
All remote valves, the hitch control valve, the optional trailer brake and optional power beyond circuit contain a signal
port. Each signal port directs a signal pressure, equal to the working pressure of that circuit, through signal lines
and check valves to the pump compensator spool. The compensator angles the pump swash plate to meet system
demands.
A check valve is located in each signal line between the control valves and the compensator spool. If several control
valves are operated at the same time, the signal line at the highest pressure causes the other check valve(s) at the
lower pressures to seat themselves. This prevents signal bleed off through other control valves and ensures that the
highest signal pressure acts on the compensator spool.
The pump is designed to operate in two different modes according to the demand for flow and pressure. The
modes ares:
• Low pressure standby: When there is no demand for flow or pressure, the pump provides just enough flow to
make up for internal leakage in the hydraulic system at low pressure. In this mode the pump requires very little
power to drive it.
• Pressure/flow delivery and compensation: When there is a demand for flow and pressure from the hydraulic sys-
tem, the pump responds to provide only the flow required. This limits the power consumption of the system.
RCPH07CCH003GAE 1
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25. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
1. Control piston 7. Piston block loading spring
2. Control spring 8. Piston block
3. Drive set 9. Back plate
4. Pump housing 10. Compensator assembly
5. Swash plate 11. Control piston rod
6. Piston
RCPH07CCH037FAE 2
Pressure compensator
1. Signal line pressure 6. High pressure compensator spool
2. Pump case drain 7. High pressure spring
3. Control piston pressure 8. Compensator assembly
4. Piston pump outlet pressure 9. Flow compensator springs
5. Flow compensator spool 10. Orifice plug
Low pressure stand by
When there is no demand for flow, there is no pressure signal feedback to the pump, and the pump enters low pressure
standby mode. Since there is no place for pump oil to flow, pressure builds at the pump outlet passage. This pressure
is directed, through internal passages in the pump back plate, to the end of the compensator spool opposite the spring.
The spring acting on the flow compensator spool allows the spool to move at a 23.5 - 27.0 bar (340 - 390 psi) differ-
ential pressure. At this pressure, the flow compensator spool moves down and allows oil to flow into the passage to
the pump control piston.
Pressure on this control piston tilts the pump swash plate against the swash plate control spring to a near neutral
position. In this condition, the pump provides just enough flow to make up for internal leakage, thus maintaining a
minimum system pressure of 23.5 - 27.0 bar (340 - 390 psi).
The pump remains in the low pressure standby position as long as there is no pressure or flow demand from the
hydraulic system. In this mode, the pump produces very little heat and absorbs very little horsepower from the engine.
Engine Start Up
Before the engine is started, the pump swash plate angle is at its maximum angle. As soon as the engine is cranked
by the starter motor, the pressure and flow compensating (PFC) pump produces flow and pressure builds in the pump
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26. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
delivery passage. When this pressure reaches 23.5 - 27.0 bar (340 - 390 psi) the pump enters its low pressure
standby mode. This occurs almost instantly and makes engine starting easier.
Pressure/flow delivery and compensation
When oil is required in the system, flow is controlled by the difference in pressure at opposite ends of the compensator
spool.
When a control valve is operated, pressure at the outlet of the piston pump drops slightly. Spring and signal line
pressure shift the flow compensator spool away from the spring end, allowing oil from the control piston to drain past
the spool and to tank.
As the oil drains out of the control piston, the swash plate angle increases and pump flow rises until the flow demand
has been met. The flow from the pump is determined by the size of the orifice in the control valve which is being
operated. This orifice is created by limiting the main valve spool travel within the control valve.
When a control valve is operated, oil pressure in the circuit being supplied increases to its operating pressure. This
pressure is transmitted through the sensing line to the spring end of the compensator spool.
Increased flow demand
When an additional control valve is operated, pressure drops slightly at the pump pressure passage. The compen-
sator spool moved up and allows the oil behind the control piston to drain to tank. The swash plate moves and pump
flow increases until the extra demand for flow has been met.
Pressure at the pump outlet increases until it is 23.5 - 27.0 bar (340 - 390 psi) above the signal line pressure. This
pressure increase moves the pump compensator spool against the spring, allowing sufficient flow past the spool to
the control piston. This action on the piston moves the swash plate to a position where increased flow is maintained
and the pressure stabilized.
Decreased flow demand
When flow demand is reduced, pump pressure increases until the pump outlet pressure exceeds the signal line pres-
sure by more than 23.5 - 27.0 bar (340 - 390 psi). The flow compensator spool moves down to allow some oil to flow
into the pump control piston. This action on the piston destrokes the pump against the spring and reduces pump flow.
When pump flow falls to match the reduced demand, the difference in pressure sensed on the opposite sides of the
compensator spool returns to 23.5 - 27.0 bar (340 - 390 psi). The compensator spool moves and blocks off the
passage to the control piston, which locks the swash plate at that pumping angle.
High pressure standby
The hydraulic system is protected by limiting its maximum pressure to 202 - 203 bar (2930 - 2950 psi) through a
signal relief valve. This protection is required, for example, when a hydraulic cylinder reaches the end if its stroke or
when an unconnected remote valve is operated.
NOTE: Hitch system pressure is not limited by a signal relief valve. Hitch system maximum pressure limit is 224 bar
(3250 psi).
When system pressure reaches the setting of the high pressure compensator spool, the pump high pressure com-
pensator spool shifts against its spring, allowing the full pump pressure to be applied to the pump control piston. This
destrokes the pump very rapidly from full stroke to almost zero (within 8 to 10 milliseconds). The swash plate stabi-
lizes to provide just sufficient flow to make up for internal leakage.
The pump remains in the high pressure standby mode until the valve in operation returns to neutral. When this occurs,
signal line feed from the valve is cut off. Signal pressure drops because the drain orifice plug passage is open to the
pump case drain. When there is no signal line pressure, the pump immediately returns to a low pressure standby
condition.
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27. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Pressure/flow compensating (PFC) pump Standard - Component
identification
T8010, T8020, T8030, T8040, T8050
RCPH07CCH025FAE 1
RCPH07CCH017FAE 2
1. Remote manifold load sense tube 6. PFC piston pump
2. PFC pump to priority regulator valve 7. Remote manifold return (tube)
3. Remote manifold return (hose) 8. Remote manifold supply
4. Main filter assembly
5. Pump load sense
9. Priority regulator valve
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28. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Pressure/flow compensating (PFC) pump High flow - Component
identification
T8010, T8020, T8030, T8040, T8050
RCPH07CCH018FAE 1
RCPH07CCH017FAE 2
1. Remote manifold load sense tube 6. High flow PFC piston pump
2. PFC pump to priority regulator valve 7. Remote manifold return (tube)
3. Remote manifold return (hose) 8. Remote manifold supply
4. Main filter assembly
5. Pump load sense
9. Priority regulator valve
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29. DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
Pressure/flow compensating (PFC) pump Dual flow - Component
identification
T8010, T8020, T8030, T8040, T8050
RCPH07CCH027FAE 1
RCPH07CCH030FAE 2
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