This document provides removal and installation instructions for the front cover and front gear group of a Caterpillar C4.4 engine used in a 312E excavator. The removal procedure involves locking the crankshaft, camshaft, and fuel injection pump positions using timing pins before removing components like gears, plates, and seals. The installation procedure specifies cleaning and inspecting parts, applying lubricants, and using tools to position components and check clearances as the front gear group and cover are reinstalled on the engine. Proper locking of the crankshaft and other components is emphasized to maintain correct timing throughout the process.
Caterpillar cat 323 f l excavator (prefix plb) service repair manual (plb0000...fusjejkdkmse
This document provides instructions for removing and installing the front cover and front gear group of a Caterpillar C7.1 engine. It outlines the required tools and multi-step procedures, which include locking the crankshaft and camshaft positions, removing covers and gears, and reinstalling components while maintaining proper timing. Special care must be taken to avoid losing fuel injection pump timing during the process. Thorough cleaning and inspection of parts is emphasized before reassembly.
The document provides instructions for installing a fuel injection pump on a Caterpillar C7.1 engine. Key steps include:
1. Installing a new O-ring seal on the fuel injection pump and new sealing washers on installation bolts.
2. Carefully installing the fuel injection pump and tightening the bolts to the specified torque.
3. Installing a mounting bracket and tightening its bolt and the fuel pump mounting bolt/nut to the specified torques.
4. Ensuring the engine is at the correct timing position before installing other components like fuel lines and the fuel pump gear.
Caterpillar cat 345 b excavator (prefix amn) service repair manual (amn00001 ...fjsekdmmeed
The document provides instructions for disassembling and assembling the travel motor of an excavator model 345B. It lists 31 steps to disassemble parts like the head, plates, seals, pistons, and housing. It then lists 27 steps to reassemble these parts in reverse order, making sure to clean parts and apply lubricant. Proper installation of seals, washers, and keys is emphasized.
Caterpillar cat 345 c excavator (prefix spc) service repair manual (spc00001 ...fjsekdmmeed
The document provides instructions for disassembling and assembling a travel motor. It begins with disassembly steps including removing the head, pins, plates, seals, brake piston, separator plates, disks, and rotating group components. Assembly steps are then listed in reverse order and include installing seals, spacers, piston assemblies, springs and other components back into the travel motor housing. Precautions are given such as cleaning parts and applying lubricant before assembly.
Caterpillar cat 430 f backhoe loader (prefix lnh) service repair manual (lnh0...fjjskekskemmm
This document provides instructions for removing and installing the front gear group of a Caterpillar C4.4 engine. It describes:
1) Using turning tools to lock the crankshaft and camshaft in position before removal to maintain timing.
2) Loosening rocker arms, unscrewing adjusters, and locking the fuel injection pump to remove tension from gears.
3) Marking gears to ensure proper reinstallation alignment.
4) Removing the camshaft, idler, and fuel pump gears, cleaning components, and checking for wear.
5) Reinstalling gears using timing pins to set alignment, measuring backlash, and adjusting valves before reassembly.
Caterpillar cat 313 f excavator (prefix prg) service repair manual (prg00001 ...fjjskekdmmse
This document provides instructions for removing and installing the front gear group on a C4.4 engine. The procedure involves using various tools to lock the crankshaft, camshaft and fuel injection pump in position before removing gears. Individual gears are removed and installed one at a time, ensuring proper timing is maintained through alignment of marks on each gear. End play and backlash are checked using gauges once installation is complete. Precautions are outlined to prevent damage to engine components.
Caterpillar cat 336 f l xe excavator (prefix ltp) service repair manual (ltp0...fjkskedmme
This document provides disassembly instructions for the travel motor on a 336F L XE excavator. It lists 27 steps to fully disassemble the travel motor, including removing the head, springs, pistons, barrel assembly, friction plates and other internal components. Detailed illustrations accompany each step to show how to properly remove parts and note their original positions for reassembly. Safety precautions are provided to warn of potential spring forces and contain any released fluids.
Caterpillar cat 312 e excavator (prefix wey) service repair manual (wey00001 ...fjjskekdmmse
The document provides instructions for removing and installing the front gear group on 312E and 312E L excavator models powered by a C4.4 engine. The removal procedure involves using various tools to lock the crankshaft, camshaft and fuel injection pump in position before removing components like the idler gears, camshaft gear, and front housing bearing. The installation procedure outlines cleaning and inspecting components before reinstalling them in reverse order of removal, ensuring proper positioning and locking of gears.
Caterpillar cat 323 f l excavator (prefix plb) service repair manual (plb0000...fusjejkdkmse
This document provides instructions for removing and installing the front cover and front gear group of a Caterpillar C7.1 engine. It outlines the required tools and multi-step procedures, which include locking the crankshaft and camshaft positions, removing covers and gears, and reinstalling components while maintaining proper timing. Special care must be taken to avoid losing fuel injection pump timing during the process. Thorough cleaning and inspection of parts is emphasized before reassembly.
The document provides instructions for installing a fuel injection pump on a Caterpillar C7.1 engine. Key steps include:
1. Installing a new O-ring seal on the fuel injection pump and new sealing washers on installation bolts.
2. Carefully installing the fuel injection pump and tightening the bolts to the specified torque.
3. Installing a mounting bracket and tightening its bolt and the fuel pump mounting bolt/nut to the specified torques.
4. Ensuring the engine is at the correct timing position before installing other components like fuel lines and the fuel pump gear.
Caterpillar cat 345 b excavator (prefix amn) service repair manual (amn00001 ...fjsekdmmeed
The document provides instructions for disassembling and assembling the travel motor of an excavator model 345B. It lists 31 steps to disassemble parts like the head, plates, seals, pistons, and housing. It then lists 27 steps to reassemble these parts in reverse order, making sure to clean parts and apply lubricant. Proper installation of seals, washers, and keys is emphasized.
Caterpillar cat 345 c excavator (prefix spc) service repair manual (spc00001 ...fjsekdmmeed
The document provides instructions for disassembling and assembling a travel motor. It begins with disassembly steps including removing the head, pins, plates, seals, brake piston, separator plates, disks, and rotating group components. Assembly steps are then listed in reverse order and include installing seals, spacers, piston assemblies, springs and other components back into the travel motor housing. Precautions are given such as cleaning parts and applying lubricant before assembly.
Caterpillar cat 430 f backhoe loader (prefix lnh) service repair manual (lnh0...fjjskekskemmm
This document provides instructions for removing and installing the front gear group of a Caterpillar C4.4 engine. It describes:
1) Using turning tools to lock the crankshaft and camshaft in position before removal to maintain timing.
2) Loosening rocker arms, unscrewing adjusters, and locking the fuel injection pump to remove tension from gears.
3) Marking gears to ensure proper reinstallation alignment.
4) Removing the camshaft, idler, and fuel pump gears, cleaning components, and checking for wear.
5) Reinstalling gears using timing pins to set alignment, measuring backlash, and adjusting valves before reassembly.
Caterpillar cat 313 f excavator (prefix prg) service repair manual (prg00001 ...fjjskekdmmse
This document provides instructions for removing and installing the front gear group on a C4.4 engine. The procedure involves using various tools to lock the crankshaft, camshaft and fuel injection pump in position before removing gears. Individual gears are removed and installed one at a time, ensuring proper timing is maintained through alignment of marks on each gear. End play and backlash are checked using gauges once installation is complete. Precautions are outlined to prevent damage to engine components.
Caterpillar cat 336 f l xe excavator (prefix ltp) service repair manual (ltp0...fjkskedmme
This document provides disassembly instructions for the travel motor on a 336F L XE excavator. It lists 27 steps to fully disassemble the travel motor, including removing the head, springs, pistons, barrel assembly, friction plates and other internal components. Detailed illustrations accompany each step to show how to properly remove parts and note their original positions for reassembly. Safety precautions are provided to warn of potential spring forces and contain any released fluids.
Caterpillar cat 312 e excavator (prefix wey) service repair manual (wey00001 ...fjjskekdmmse
The document provides instructions for removing and installing the front gear group on 312E and 312E L excavator models powered by a C4.4 engine. The removal procedure involves using various tools to lock the crankshaft, camshaft and fuel injection pump in position before removing components like the idler gears, camshaft gear, and front housing bearing. The installation procedure outlines cleaning and inspecting components before reinstalling them in reverse order of removal, ensuring proper positioning and locking of gears.
Caterpillar cat 312 e excavator (prefix gac) service repair manual (gac00001 ...didkkskdmmd1
This document provides instructions for removing and installing the front cover of a Caterpillar C4.4 engine. It describes:
1. Removing the crankshaft pulley, fan, and front seal from the front cover; removing bolts and separating the front cover and housing.
2. Cleaning surfaces, installing a new gasket and seal, and using alignment tools to reinstall the front cover and tighten bolts to the specified torque.
3. Additional steps for removing other engine components like the valve mechanism cover to access the front gear group, and locking the crankshaft and fuel injection pump positions before removing gears and related parts.
The document provides removal and installation instructions for the front cover and front gear group of a Caterpillar C4.4 engine. The removal procedure involves locking the crankshaft, camshaft, and fuel injection pump positions using timing pins before removing components. The front cover is removed after draining fluids. The gear group is then removed after loosening rocker arm inserts and locking engine components. Installation involves cleaning and inspecting parts, applying lubricants, and reinstalling components in reverse order while maintaining proper timing.
Caterpillar cat 312 e excavator (prefix gac) service repair manual (gac00001 ...fjjsieskekfmmse
This document provides instructions for removing and installing the front cover of a Caterpillar C4.4 engine used in a 312E excavator. The removal procedure involves removing bolts and identifying differently sized bolts. The installation procedure specifies cleaning surfaces, installing a new gasket, aligning parts with tools, and tightening bolts to the specified torque. Detailed illustrations and notes are provided to ensure proper timing of gears is maintained throughout the process.
Caterpillar cat 323 f l excavator (prefix plb) service repair manual (plb0000...fjkskekxsdcmdmme
This document provides instructions for removing and installing the front gear group of a Caterpillar C7.1 engine. The procedure involves using various tools to lock the crankshaft, camshaft and fuel injection pump in position while removing and installing gears. Key steps include removing covers, locking components, identifying alignment marks on gears, checking specifications, and lubricating gears upon installation. Precise positioning of engine components is required according to timing procedures to maintain proper timing through the process.
Caterpillar cat 323 f l excavator (prefix plb) service repair manual (plb0000...idkdkddmd
This document provides instructions for removing and installing the front gear group of a Caterpillar C7.1 engine. The removal procedure involves locking the crankshaft and camshaft in position using timing pins to maintain timing. Components like the camshaft gear and idler gear are then removed. The installation procedure similarly uses timing pins to lock components in place and align timing marks, ensuring the gears are reinstalled in their original alignment. End play and backlash of gears are checked once installed.
Caterpillar cat 420 f backhoe loader (prefix ltg) service repair manual (ltg0...ufjjsjekkmdme
This document provides instructions for removing and installing the front gear group of a Caterpillar C4.4 engine. It describes:
1) Required tools including a crankshaft turning tool, timing pins, and indicator tools.
2) Removal procedures which include locking the crankshaft and camshaft positions, loosening rocker arms, and removing gears in a specific order while maintaining timing marks for alignment.
3) Installation procedures which include cleaning and inspecting components, installing gears in reverse order while aligning timing marks and measuring backlash, and adjusting valves at the end.
Caterpillar cat 420 f backhoe loader (prefix ltg) service repair manual (ltg0...fujsjfkskemm
The document provides instructions for removing and installing the front gear group of a C4.4 engine. It describes:
1) Using turning tools to lock the crankshaft and camshaft in position before removal to maintain timing.
2) Marking the gears to ensure proper reinstallation alignment.
3) Removing the fuel pump, camshaft, and idler gears in order.
4) Cleaning and inspecting components before reinstalling in reverse order while checking timing marks and backlash.
Caterpillar cat 420 f backhoe loader (prefix ltg) service repair manual (ltg0...uudjfjjdkkksmm
This document provides instructions for removing and installing the front gear group of a Caterpillar C4.4 engine. It describes:
1) Required tools including a crankshaft turning tool, timing pins, and indicator tools.
2) Removal procedures which include locking the crankshaft and camshaft positions, removing gears in a specific order, and ensuring fuel injection pump timing is not lost.
3) Installation procedures such as cleaning components, installing gears in the correct order and alignment, checking backlash, and adjusting valve lash.
Caterpillar cat 420 f backhoe loader (prefix ltg) service repair manual (ltg0...fjsjfkskefmem
The document provides instructions for removing and installing the front gear group of a C4.4 engine. It describes:
1) Using turning tools to lock the crankshaft and camshaft in position before removal to maintain timing.
2) Marking the gears to ensure proper reinstallation alignment.
3) Removing the fuel pump, camshaft, and idler gears in order.
4) Cleaning and inspecting components before reinstalling in reverse order while checking timing marks and backlash.
Caterpillar cat 320 e excavator (prefix lak) service repair manual (lak00001 ...fjjskkdmnsme
This document provides instructions for removing and installing the front cover and front gear group of a Caterpillar C6.6 engine. The removal procedure involves removing components like the crankshaft pulley and fan, then removing bolts and separating the front cover from the housing. Tools are used to lock components like the crankshaft, camshaft and fuel injection pump in position. The installation procedure specifies cleaning and inspecting parts, then installing components like the camshaft gear and idler gear in their original alignment positions using tools to hold parts in place. Torque specifications and cautions about containing fluids are also provided.
Caterpillar cat 320 e l excavator (prefix lak) service repair manual (lak0000...fjkskekdmmenm
This document provides instructions for removing and installing the front cover and front gear group of a Caterpillar C6.6 engine. The removal procedure involves removing components like the crankshaft pulley and fan, then removing bolts and separating the front cover from the housing. Tools are used to lock components like the crankshaft, camshaft and fuel injection pump in position. The installation procedure specifies cleaning and inspecting parts, then installing components like the camshaft gear and idler gear in their original alignment positions using tools to lock parts in place. Torque specifications and cautions about containing fluids are also provided.
Caterpillar cat 320 e l excavator (prefix lak) service repair manual (lak0000...fujsekfsmemm
This document provides instructions for removing and installing the front cover on Caterpillar C6.6 engines. It describes:
- Removing the crankshaft pulley, fan if equipped, and front seal before removing front cover bolts
- Cleaning the front housing gasket surface and installing a new gasket on the front cover
- Using guide studs and alignment tools to correctly position the front cover assembly
- Reinstalling the front seal, crankshaft pulley, and fan once the front cover is secured
Removal of the gear group at the front of the engine is also summarized, including locking the crankshaft, fuel injection pump, and camshaft in position before
John deere 7, 8, 8 a, 10, &10a backhoes service repair manualfjksekmdme
This technical manual provides specifications and information for John Deere backhoes, loaders, blades, tillers and hydraulic dump units. It includes specifications on hydraulic systems, lift and drop rates, cycle times and dimensions. It also provides service recommendations for O-ring boss fittings and flat face O-ring seal fittings, including torque specifications for proper installation.
John deere 6 414 t oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and specifications rather than theoretical background. References to additional "FOS Manuals" are included for trainees or more complex issues.
John deere 6 414 d oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and specifications rather than theoretical background. References to additional "FOS Manuals" are included for trainees or more complex issues.
John deere 6 359 t oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and only critical information needed for repairs.
John deere 6 359 d oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and specifications rather than theoretical background. References to additional "FOS Manuals" are included for trainees or more complex issues.
John deere 6 329 d oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes sections on the engine, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing. The sections cover removal, repair, testing and installation procedures for engine components. It also provides specifications, torque values, and an index of topics covered in the manual. The manual is intended as a reference for experienced service technicians working on these engine models.
John deere 5 e 2bv blower service repair manualfjksekmdme
The document provides specifications for small engines and equipment including blowers, hedge clippers, and trimmers made by John Deere, listing details like engine type, displacement, speed ranges, components, and dimensions for each model. Safety guidelines are also provided, advising users to keep others away from operating equipment, avoid overreaching or pointing tools at people, and always shut off engines before adjusting or refueling.
John deere 4 276 t oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and specifications rather than theoretical background. References to additional "FOS Manuals" are included for trainees or more complex issues.
John deere 4 276 d oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines, with concise instructions and specifications rather than theoretical background. References to additional "FOS Manuals" are included for trainees or more complex issues.
John deere 4 239 t oem engine service repair manualfjksekmdme
This document provides an overview and table of contents for a technical manual covering 300 Series OEM Engines. It includes:
- Sections covering the engine and its components, auxiliary systems, electrical systems, sheet metal, PTO drive, and system testing.
- An index listing components and procedures alphabetically to aid in navigation.
- Specification tables for torque values and engine data.
The manual is intended as a reference for experienced technicians servicing these engines. It provides removal, repair, installation, and adjustment procedures as well as diagnostics information.
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2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 312E EXCAVATOR GAC
Configuration: 312E Excavator GAC00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
C4.4 Engines for Caterpillar Built Machines
Media Number -UENR0602-11 Publication Date -01/08/2013 Date Updated -25/10/2017
i04047880
Front Cover - Remove and Install
SMCS - 1166-010
Removal Procedure
Start By:
a. Remove the crankshaft pulley. Refer to Disassembly and Assembly, "Crankshaft Pulley -
Remove and Install" for the correct procedure.
b. If the engine has a fan, remove the fan. Refer to Disassembly and Assembly, "Fan - Remove
and Install" for the correct procedure.
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3. Illustration 1 g02481028
1. Remove the front seal from the front cover. Refer to Disassembly and Assembly,
"Crankshaft Front Seal - Remove and Install" for the correct procedure.
2. Remove bolts (3) and bolts (4). Identify the positions of bolts of different length.
3. Remove front cover (1) from front housing (5).
4. Remove gasket (2).
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A -
Guide Stud
M8 by 70 mm
2
B 342-9206 Front Cover Alignment Tool 1
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4. Illustration 2 g02481030
1. Thoroughly clean the gasket surface of the front housing.
2. If the original front cover is installed, follow Step 2.a through Step 2.b.
a. Thoroughly clean front cover (1).
b. Install a new gasket (2) to front cover (1). Engage Locators (Y) into the holes in the
front cover.
3. Install Tooling (A) into Holes (X) in front housing (5).
4. Use Tooling (A) in order to position the front cover assembly onto the front housing.
5. Install bolts (3) and bolts (4) finger tight. Ensure that the bolts of different length are
installed in the correct positions.
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5. 6. Install a new front seal to the front cover. Refer to Disassembly and Assembly, "Crankshaft
Front Seal - Remove and Install" for the correct procedure.
7. Use Tooling (B) in order to align the front cover.
8. Remove Tooling (A) and install the remaining bolts.
9. Tighten bolts (3) and bolts (4) to a torque of 22 N·m (195 lb in).
10. Remove Tooling (B) from the front cover.
End By:
a. Install the crankshaft pulley. Refer to Disassembly and Assembly, "Crankshaft Pulley -
Remove and Install" for the correct procedure.
b. If the engine has a fan, install the fan. Refer to Disassembly and Assembly, "Fan - Remove
and Install" for the correct procedure.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Jun 9 22:56:34 UTC+0800 2020
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6. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 312E EXCAVATOR GAC
Configuration: 312E Excavator GAC00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
C4.4 Engines for Caterpillar Built Machines
Media Number -UENR0602-11 Publication Date -01/08/2013 Date Updated -25/10/2017
i04048571
Gear Group (Front) - Remove and Install - Heavy Duty Gear
Group (Front)
SMCS - 1206-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
9U-7336 Housing 1
5P-7305 Engine Turning Tool 1
B 230-6284 Timing Pin (Camshaft) 1
C 364-9107
Timing Pin
(Fuel Injection Pump)
1
D
136-4632 Timing Pin (Crankshaft) 1
268-1966 Adapter 1
E 298-5564 T40Torx Socket 1
Start By:
a. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and
Install" for the correct procedure.
b. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
Mechanism Cover - Remove and Install" for the correct procedure.
NOTICE
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7. Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Dispose of all fluids according to local regulations and mandates.
Note: Care must be taken in order to ensure that the fuel injection pump timing is not lost during
the removal of the front gear group. Carefully follow the procedure in order to remove the gear
group.
1. If the air compressor is equipped with a hydraulic pump, remove the hydraulic pump. Refer
to Original Equipment Manufactures (OEM) for the correct procedure.
2. If the engine is equipped with an air compressor, remove the air compressor. Refer to
Disassembly and Assembly, "Air Compressor - Remove" for the correct procedure.
3. If the engine is equipped with only a hydraulic pump, remove the hydraulic pump. Refer to
OEM for the correct procedure.
4. Use Tooling (A) in order to rotate the crankshaft so that number one piston is at top dead
center on the compression stroke. Refer to System Operation, Testing and Adjusting,
"Finding Top Center Position for No.1 Piston" for the correct procedure.
Note: Do not use excessive force to install Tooling (D). Do not use Tooling (D) to hold the
crankshaft during repairs.
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8. Illustration 1 g02486477
5. Remove plug (1) from the cylinder block. Remove O-ring seal (2) from the plug.
6. Use Tooling (A) in order to rotate the crankshaft so that number one piston is at top dead
center on the compression stroke. Refer to System Operation, Testing and Adjusting,
"Finding Top Center Position for No.1 Piston" for the correct procedure. Install Tooling (D)
through Hole (W) in order to lock the crankshaft so that number one piston is at top dead
center on the compression stroke.
7. Remove Tooling (D).
8. Use Tooling (A) in order to rotate the crankshaft in a clockwise direction and position the
crankshaft at the safe position. Refer to System Operation, Testing and Adjusting, "Position
the Valve Mechanism Before Maintenance Procedures" for the correct procedure.
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9. Illustration 2 g02048655
9. Use Tooling (E) in order to loosen threaded inserts (4) on all rocker arms (3). Unscrew
threaded inserts (4) on all rocker arms (3) until all valves are fully closed. Ensure that the
guides (5) for the pushrods are left in position on the threaded inserts (4).
Note: Ensure that ALL threaded inserts are fully unscrewed.
10. Use Tooling (A) in order to rotate the crankshaft so that number one piston is at top dead
center on the compression stroke. Refer to System Operation, Testing and Adjusting,
"Finding Top Center Position for No.1 Piston" for the correct procedure. Install Tooling (D)
through Hole (W) in order to lock the crankshaft so that number one piston is at top dead
center on the compression stroke. Refer to Illustration 1.
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10. Illustration 3 g02488136
11. Install Tooling (B) through Hole (X) in camshaft gear (6) into the front housing. Use
Tooling (B) in order to lock the camshaft in the correct position. Refer to System Operation,
Testing and Adjusting, "Finding Top Center Position for No.1 Piston" for the correct
procedure.
12. Use Tooling (C) in order to lock the fuel injection pump gear in the correct position. Refer
to Disassembly and Assembly, "Fuel Injection Pump - Remove" for the correct procedure.
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11. Illustration 4 g02052394
13. If the right-hand side of the engine is equipped with a hydraulic pump, remove the hydraulic
pump. Refer to OEM for the correct procedure.
14. If necessary, remove bolts (7) from plate (8). Remove plate (8) and remove O-ring seal (9).
15. Remove circlip (10) and remove gear assembly (11) from front housing (12).
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12. Illustration 5 g02053673
16. If necessary, follow Step 16.a through Step 16.b in order to disassemble gear assembly (11).
a. Remove circlip (13) from gear assembly (11).
b. Place gear assembly (11) on a suitable support. Press bearing (14) from gear (15).
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13. Illustration 6 g02048714
17. Mark gear (6), gear (16), gear (17) and gear (18) in order to show alignment. Refer to
Illustration 6.
Note: Identification will ensure that the gears can be installed in the original alignment.
18. Remove camshaft gear (6). Refer to Disassembly and Assembly, "Camshaft Gear - Remove
and Install" for the correct procedure.
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14. Illustration 7 g02053984
19. Remove bolts (22) and bolts (24).
20. Remove tube assembly (23) from idler gear (16) and idler gear (26).
21. Remove plate (21).
22. Remove idler gear (16) from hub (20) (not shown).
23. Remove idler gear (26) and idler gear hub (25) from front housing (12).
24. Remove hub (20) (not shown) from front housing (12).
25. If necessary, remove bearing (19) from front housing (12). Refer to Disassembly and
Assembly, "Housing (Front) - Remove" for the correct procedure.
Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A
9U-7336 Housing 1
5P-7305 Engine Turning Tool 1
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15. B 230-6284 Timing Pin (Camshaft) 1
C 364-9107 Timing Pin(Fuel Injection Pump) 1
D
136-4632 Timing Pin (Crankshaft) 1
268-1966 Adapter 1
E 298-5564 T40Torx Socket 1
F 207-1601 Rubber Lubricant 1
G 7M-7456 Bearing Mount Compound 1
H
9U-7324 Indicator Bracket 1
7H-1942 Dial Indicator 1
3S-3268 Indicator Contact Point 1
7H-1940 Universal Attachment 1
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: The fuel injection pump must remain locked until the procedure instructs you to unlock the
fuel injection pump.
1. Ensure that number one piston is at top dead center on the compression stroke. Refer to
System Operation, Testing and Adjusting, "Finding Top Center Position for No.1 Piston"
for the correct procedure.
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16. Illustration 8 g02488176
2. If necessary, install Tooling (D) into Hole (W) in the cylinder block. Use Tooling (D) in
order to lock the crankshaft in the correct position. Refer to System Operation, Testing and
Adjusting, "Finding Top Center Position for No.1 Piston" for the correct procedure.
Note: Do not use excessive force to install Tooling (D). Do not use Tooling (D) to hold the
crankshaft during repairs.
3. Ensure that all of the components of the front gear group are clean and free from wear and
damage. If necessary, replace any components that are worn or damaged.
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18. Illustration 10 g02053693
4. If necessary, Install bearing (19) to front housing (12). Refer to Disassembly and Assembly,
"Housing (Front) - Install" for the correct procedure.
5. Install hub (20) to the recess of front housing (12). Ensure that the oil Hole (Y) is to the top
of the hub.
6. Ensure that the fuel injection pump is locked in the correct position. Refer to Disassembly
and Assembly, "Fuel Injection Pump - Install" for the correct procedure.
7. Lubricate idler hub (20) with clean engine lubricating oil. Install idler gear (16) to the idler
hub. Ensure that the timing marks are toward the front of the idler gear. Align timing marks
on idler gear (16) with gear (17) and gear (18).
8. Lubricate idler gear hub (25) with clean engine lubricating oil and install idler gear (26) to
the idler gear hub. Install the assembly for idler gear (26) to front housing (12).
Note: Ensure that the idler gear hub and the idler gear are correctly aligned.
9. Position plate (21) onto idler gear (16).
Note: Ensure that the identification mark TOP is upward.
10. Position tube assembly (23) onto idler gear (16) and idler gear (26). Install bolts (22) and
bolts (24).
Note: Ensure that the tube is correctly positioned on the hubs of the idler gears.
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19. 11. Tighten bolts (22) and bolts (24) to a torque of 44 N·m (32 lb ft).
Illustration 11 g02488178
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20. Illustration 12 g02488136
12. Install camshaft gear (6). Loosely install bolt (28) and washer (27) for the camshaft gear.
Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install" for the correct
procedure.
13. Install Tooling (B) through Hole (X) in camshaft gear (6) into the front housing.
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21. Illustration 13 g02488216
14. Ensure that the timing marks on gear (6), gear (16), gear (17) and gear (18) are in alignment
and that the mesh of the gears is correct.
15. Remove Tooling (B), Tooling (C), and Tooling (D).
16. When bolt (28) is a 8.8 Grade. Tighten bolt (28) for camshaft gear (6) to a torque of 95 N·m
(70 lb ft).
When bolt (28) is a 10.9 Grade. Tighten bolt (28) to a torque of 120 N·m (89 lb ft).
17. Use Tool (H) in order to check the end play of the camshaft gear. Refer to Specifications,
"Camshaft" for more information.
18. Use Tool (H) in order to check the end play of the idler gears. Refer to Specifications, "Gear
Group (Front)" and refer to Disassembly and Assembly, "Idler Gear - Remove and Install"
for further information.
19. Use Tooling (H) in order to measure the backlash for gear (6), gear (16), gear (17) and gear
(16). Refer to Specifications, "Gear Group (Front)" for further information.
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22. Illustration 14 g02058193
20. If necessary, follow Step 20.a through Step 20.c in order to assemble gear assembly (10).
a. Apply a small continuous bead of Tooling (G) to inner Surface (Z) of bearing (14).
Place the inner race of bearing (14) onto a suitable support. Press the shaft of gear
(15) into bearing (14) until the shoulder of the gear is against the bearing. Remove
any excess bearing mount compound.
b. Install circlip (13) to gear assembly (11).
c. Lightly lubricate bearing (14) and gear assembly (11) with clean lubricating oil.
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23. Illustration 15 g02052394
21. Install gear assembly (11) to front housing (12). Ensure that the shaft of gear assembly (11)
is correctly aligned with the bearing in front housing (12).
22. Install circlip (10) to front housing (12).
Note: Ensure that the circlip is correctly located in the front housing.
23. Ensure that there is tactile backlash between the camshaft gear and the accessory drive gear.
24. If the right-hand side of the engine is equipped with a hydraulic pump, install the hydraulic
pump. Refer to OEM for the correct procedure.
25. If necessary, lightly lubricate a new O-ring seal (9) with Tooling (F). Install new O-ring seal
(9) to plate (8). Install plate (8) to front housing (12).
26. Install bolts (7) to plate (8). Tighten the bolts to a torque of 10 N·m (88 lb in).
27. Lubricate each gear with clean engine oil.
NOTICE
Failure to ensure that the crankshaft is positioned at the safe position
will result in interference between the pistons and the valves.
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24. Interference between the pistons and the valves will result in damage to
the engine.
28. Use Tooling (A) in order to rotate the crankshaft in a clockwise direction and position the
crankshaft at the safe position. Refer to System Operation, Testing and Adjusting, "Position
the Valve Mechanism Before Maintenance Procedures" for the correct procedure.
Illustration 16 g02048655
29. Ensure that the guides (5) for the pushrods are correctly positioned on the threaded inserts
(4). Use Tooling (E) in order to tighten threaded inserts (4) on all rocker arms (3). Tighten
the threaded inserts to a torque of 30 N·m (265 lb in).
Note: When the threaded insert is tightened, the threaded insert must be correctly seated
into the cup for the pushrod.
30. If the engine is equipped with an air compressor, install the air compressor. Refer to
Disassembly and Assembly, "Air Compressor - Install" for the correct procedure.
31. If the air compressor is equipped with a hydraulic pump, install the hydraulic pump. Refer
to OEM for the correct procedure.
32. If the engine is equipped only with a hydraulic pump, install the hydraulic pump. Refer to
OEM for the correct procedure.
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25. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
26. 33. The engine should not be operated for a period 30 minutes after the threaded inserts on all
the rocker arms have been tightened. This period of time will allow the hydraulic lifters to
purge off excessive engine oil from the hydraulic lifters.
End By:
a. Install the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and
Install" for the correct procedure.
b. Install the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism
Cover - Remove and Install" for the correct procedure.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Jun 9 22:57:33 UTC+0800 2020
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27. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 312E EXCAVATOR GAC
Configuration: 312E Excavator GAC00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
C4.4 Engines for Caterpillar Built Machines
Media Number -UENR0602-11 Publication Date -01/08/2013 Date Updated -25/10/2017
i04048572
Gear Group (Front) - Remove and Install
SMCS - 1206-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
9U-7336 Housing 1
5P-7305 Engine Turning Tool 1
B 230-6284 Timing Pin (Camshaft) 1
C 364-9107
Timing Pin
(Fuel Injection Pump)
1
D
136-4632 Timing Pin (Crankshaft) 1
268-1966 Adapter 1
E 298-5564 T40Torx Socket 1
Start By:
a. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove and
Install" for the correct procedure.
b. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
Mechanism Cover - Remove and Install" for the correct procedure.
NOTICE
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28. Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Dispose of all fluids according to local regulations and mandates.
Note: Care must be taken in order to ensure that the fuel injection pump timing is not lost during
the removal of the front gear group. Carefully follow the procedure in order to remove the gear
group.
Illustration 1 g02485936
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