This document provides service information for the EC45 engine, including:
1. Descriptions and external views of the engine, including labeled diagrams of the left and right sides.
2. Precautions to take before starting engine inspection and service, such as fixing the engine horizontally and draining fluids.
3. A troubleshooting chart that lists common engine troubles, possible causes, and corrective actions.
4. Additional engine troubleshooting information focusing on detecting and rectifying faults as quickly as possible to avoid more expensive repairs.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdffijsekkkdmdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfnie7140zhuang
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfzu0582kui
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdflunrizan628
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfdai20nao
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdffapanhe306271
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfzhenchun51
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdftepu22753653
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdffijsekkkdmdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfnie7140zhuang
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfzu0582kui
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdflunrizan628
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfdai20nao
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdffapanhe306271
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfzhenchun51
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdftepu22753653
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdff8iosedkdm3e
This document contains two service information documents about an engine:
1. The first document describes the engine as a vertical, water-cooled, inline 3-cylinder 4-stroke diesel engine that meets EPA Tier 4 emissions standards. It provides details on identifying the engine model and serial number.
2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
Volvo EC20C Compact Excavator Service Repair Manual Instant Download.pdfrou774513po
This document contains two service information documents about an engine:
1. The first document describes the engine as a vertical, water-cooled, inline 3-cylinder 4-stroke diesel engine that meets EPA Tier 4 emissions standards. It provides details on identifying the engine model and serial number.
2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdflunrizan628
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdfzhenchun51
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdfnie7140zhuang
This document contains two service information documents about an engine:
1. The first document describes the engine as a vertical, water-cooled, inline 3-cylinder 4-stroke diesel engine that meets EPA Tier 4 emissions standards. It provides details on identifying the engine model and serial number.
2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdfzu0582kui
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdfdai20nao
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdfrou774513po
This document contains two service information documents about an engine:
1. The first document describes the engine as a vertical, water-cooled, inline 3-cylinder 4-stroke diesel engine that meets EPA Tier 4 emissions standards. It provides details on identifying the engine model and serial number.
2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdftepu22753653
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdffijsekkkdmdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdffapanhe306271
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC15C Compact Excavator Service Repair Manual Instant Download.pdff8iosedkdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdffijsekkkdmdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdffapanhe306271
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdftepu22753653
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, including disconnecting fuel lines, draining fluids, removing ancillary components like the radiator and alternator, and using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdfrou774513po
This document contains two service information documents about an engine:
1. The first document describes the engine as a vertical, water-cooled, inline 3-cylinder 4-stroke diesel engine that meets EPA Tier 4 emissions standards. It provides details on identifying the engine model and serial number.
2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdfzu0582kui
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdflunrizan628
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdfdai20nao
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, including disconnecting fuel lines, draining fluids, removing ancillary components like the radiator and alternator, and using lifting equipment to raise the cab and access the engine. Proper safety precautions are advised when handling heavy components.
Volvo EC18C Compact Excavator Service Repair Manual Instant Download.pdff8iosedkdm3e
This document provides troubleshooting information for an engine. It includes a chart listing common trouble symptoms, possible causes, and recommended corrective actions. It also describes removing an engine, which involves disconnecting various components like the battery, fuel lines, radiator, and hoses before using lifting equipment to remove the engine.
Volvo T450D Articulated Dump Truck Service Repair Manual Instant Download.pdftepu22753653
The document provides information on performing a compression test on an engine. It includes instructions to disconnect electrical connections, drain fuel lines, remove the valve cover and unit injectors. Adapters are installed in place of the injectors to connect a compression gauge. The procedure involves testing cylinder compression one at a time and comparing values to identify any low cylinders that could indicate issues like worn rings or valves. Tools required are listed.
Volvo PL4611 Pipelayer Service Repair Manual Instant Download.pdftepu22753653
The document provides instructions for adjusting the valves on a Volvo D12D engine. This includes adjusting the inlet and exhaust valves, checking and adjusting the clearance of the double rocker arm that controls internal exhaust gas recirculation, and adjusting the clearance of the double rocker arm if needed. The process involves using special tools to correctly position the camshaft, loosening and tightening adjustment screws and lock nuts, and checking clearances with feeler gauges.
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This document contains two service information documents about an engine:
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2. The second document is a troubleshooting chart that lists common engine troubles, their potential causes, and recommended corrective actions. It addresses issues like the engine not starting, low power output, abnormal sounds, hunting, and excessive vibration.
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This document provides instructions for changing a non-programmed E-ECU (Engine Electronic Control Unit) with MID 128 on a machine. The steps include:
1. Placing the machine in service position 1 and connecting the VCADS Pro programming tool.
2. Turning off the voltage with the battery disconnector.
3. Removing the engine cover and crankcase ventilation pipe.
4. Disconnecting connectors and cables from the old E-ECU and installing the new non-programmed E-ECU.
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This document provides instructions for removing an engine from a machine. It includes preparing the machine by draining fluids like coolant, engine oil, and transmission oil. Components that need to be disconnected from the engine are then listed, such as hoses, pipes, sensors, and guards. Tools needed include lifting equipment and drain hoses. Safety precautions are noted, such as placing the machine in service position and disconnecting the fire suppression system.
This document provides instructions for removing an engine. It begins by listing the necessary tools. The steps include placing the machine in service position, draining fluids like coolant, oil and transmission oil, disconnecting hoses and wires, and removing plates and guards. Safety precautions are noted, like turning off main power before working. References are provided to other documents for additional details.
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Volvo L150G Wheel Loader Service Repair Manual Instant Download.pdftepu22753653
This document provides instructions for changing a non-programmed E-ECU (engine control unit) on an engine with MID 128. The steps include: placing the machine in service position 1, connecting the VCADS Pro programming tool, turning off voltage, removing covers, disconnecting connectors and hoses from the old ECU, replacing the ECU, reconnecting connectors and hoses, and finishing installation. Diagnostic information is also provided for relevant error codes related to the ECU.
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Volvo EC45 Compact Excavator Service Repair Manual Instant Download.pdf
1. Service Information
Document Title: Function Group: Information Type: Date:
Description 200 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Description
Engine, description and external views
The EC45 is powered by a 4-cylinder four-stroke diesel in line engine with water cooling.
Figure 1
Engine, left side
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Fan
V-belt
Thermostat
Alternator
Engine hanger
Exhaust manifold
Starter
Flywheel
Oil pan
Crankshaft pulley
3. Service Information
Document Title: Function Group: Information Type: Date:
Precautions 200 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Precautions
Make preparation as follows before starting engine inspection and service.
Fix the engine on a horizontal base.
Remove the coolant hoses, fuel oil pipes, wire harness, control wires etc. connecting the driven machine and
engine, and drain coolant, lubricating oil and fuel.
Remove soil, oil, dust, etc. from the engine by washing with solvent, air, steam, etc. Carefully operate so as not to let
any foreign matter enter the engine.
Any part which is found defective as a result of inspection or any part whose measured value does not satisfy the
standard or limit shall be replaced.
Any part predicted to dissatisfy the standard or limit before the next service as estimated from the state of use
should be replaced even when the measured value then satisfies the standard or limit.
4. Service Information
Document Title: Function Group: Information Type: Date:
Troubleshooting chart 200 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Troubleshooting chart
The following table summarizes the general trouble symptoms and their causes. If any trouble symptom occurs, take
corrective action before it develops into a serious problem so as not to shorten the engine service life.
Engine troubleshooting chart
Trouble symptoms Causes Corrective actions
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Engine does not start
Seizure of inlet/exhaust valve Correct or replace
Seized or broken piston ring Replace the piston ring
Worn piston ring, piston or cylinder Perform honing and use oversize parts
Seized crankpin metal or bearing Repair or replace
Foreign matter trapped in combustion chamber Disassemble and repair
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Improper properties of lubricating oil Use proper lubricating oil
Water entrance in fuel system Perform draining from the fuel filter
Clogged fuel filter Clean or replace
Air entrance in fuel system Perform air bleeding
Clogged or cracked fuel pipe Clean or replace
Insufficient fuel supply to fuel injection pump Check the fuel tank cock, fuel tank, fuel
pipe and fuel feed pump
Priming failure (foreign matter trapped in the
valve inside the priming pump)
Disassemble and clean
Starting motor defect Repair or replace
Alternator defect Repair or replace
Open circuit in wiring harness Repair
Battery voltage drop Inspect and charge the battery
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Engine starts, but stops
soon.
Exhaust smoke none.
Seized crankpin metal or bearing Repair or replace
Improper arrangement of piston rings joint Correct the ring joint positions
Defective governor Make adjustment
Improper properties of lubricating oil Use proper lubricating oil
Insufficient lubricating oil level Add proper lubricating oil
Clogged fuel filter Clean or replace
Air entrance in fuel system Perform air bleeding
Clogged or cracked fuel pipe Clean or replace
Insufficient fuel supply to fuel injection pump Check the fuel tank cock, fuel tank, fuel
pipe and fuel feed pump
Seizure of inlet/exhaust valve Correct or replace
Engine starts, but stops
soon.
Exhaust smoke excessive.
Seized or broken piston ring Replace the piston ring
Worn piston ring, piston or cylinder Perform honing and use oversize parts
Water entrance in fuel system Perform draining from the fuel filter
5. Clogged air filter Clean
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Insufficient engine output.
Exhaust color : ordinary Compression leakage from valve seat Lap the valve seat
Seizure of inlet/exhaust valve Correct or replace
Blowout from cylinder head gasket Replace the gasket
Worn crankpin and journal bearing Measure and replace
Improper properties of lubricating oil Use proper lubricating oil
Improper properties of fuel oil Use proper fuel oil
Clogged fuel filter Clean or replace
Air entrance in fuel system Perform air bleeding
Clogged or cracked fuel pipe Clean or replace
Insufficient fuel supply to fuel injection pump Check the fuel tank cock, fuel tank, fuel
pipe and fuel feed pump
Clogged strainer at fuel feed pump inlet Clean the strainer
Seized or broken piston ring Replace the piston ring
Insufficient engine output.
(Exhaust color : white) Worn piston ring, piston or cylinder Perform honing and use oversize parts
Improper arrangement of piston rings joint Correct the ring joint positions
Reverse assembly of piston ring Reassemble correctly
Worn inlet/exhaust valve guide Measure and replace
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Timing of fuel injection pump too late Check and adjust
Improper properties of fuel oil Use proper fuel oil
Water entrance in fuel system Perform draining from the fuel filter
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Compression leakage from valve seat Lap the valve seat
Insufficient engine output.
(Exhaust color : black) Seizure of inlet/exhaust valve Correct or replace
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Insufficient cooling effect of radiator,
Defective thermostat (kept opened) or slipping
fan belt
Repair or replace thermostat and fan
belt
Insufficient coolant level Check leakage from cooling system
Slackened fan belt Adjust the belt tension
Defective thermostat Check or replace
Timing of fuel injection pump too late Check and adjust
Improper properties of fuel oil Use proper fuel oil
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Clogged air filter Clean
Engine used at high temperature or at high
altitude
Study output drop and load matching
Clogged exhaust pipe Clean
Seized or broken piston ring Replace the piston ring
Poor exhaust color : white
(During work) Worn piston ring, piston or cylinder Perform honing and use oversize parts
Reverse assembly of piston ring Reassemble correctly
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Excessive cooling effect of radiator, Repair or replace
6. Defective thermostat (kept closed)
Defective thermostat Check or replace
Timing of fuel injection pump too early Check and adjust
Timing of fuel injection pump too late Check and adjust
Improper properties of fuel oil Use proper fuel oil
Water entrance in fuel system Perform draining from the fuel filter
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Compression leakage from valve seat Lap the valve seat
Poor exhaust color : black
(During work) Seizure of inlet/exhaust valve Correct or replace
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Timing of fuel injection pump too early Check and adjust
Timing of fuel injection pump too late Check and adjust
Improper properties of fuel oil Use proper fuel oil
Uneven injection volume of fuel injection pump Check and adjust
Excessive fuel injection volume Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Clogged air filter Clean
Engine used at high temperature or at high
altitude
Study output drop and load matching
Clogged exhaust pipe Clean
High knocking sound during
compression
Timing of fuel injection pump too early Check and adjust
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Abnormal engine sound
Compression leakage from valve seat Lap the valve seat
Seizure of inlet/exhaust valve Correct or replace
Seized or broken piston ring Replace the piston ring
Seized crankpin metal or bearing Repair or replace
Worn crankpin and journal bearing Measure and replace
Loosened connecting rod screw Tighten to specified torque
Foreign matter trapped in combustion chamber Disassemble and repair
Excessive gear backlash Adjust gear and repair
Improper open/close timing of intake/exhaust
valves
Adjust the valve clearance
Improper properties of fuel oil Use proper fuel oil
Uneven combustion sound
Water entrance in fuel system Perform draining from the fuel filter
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Clogged air filter Clean
Clogged exhaust pipe Clean
Seized or broken piston ring Replace the piston ring
Hunting during idling
Seized crankpin metal or bearing Repair or replace
Worn crankpin and journal bearing Measure and replace
Defective governor Make adjustment
Water entrance in fuel system Perform draining from the fuel filter
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Seizure of inlet/exhaust valve Correct or replace
Hunting during work
7. Seized crankpin metal or bearing Repair or replace
Worn crankpin and journal bearing Measure and replace
Defective governor Make adjustment
Water entrance in fuel system Perform draining from the fuel filter
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Seizure of inlet/exhaust valve Correct or replace
Large engine vibration
Seized or broken piston ring Replace the piston ring
Seized crankpin metal or bearing Repair or replace
Worn crankpin and journal bearing Measure and replace
Loosened connecting rod screw Tighten to specified torque
Defective governor Make adjustment
Timing of fuel injection pump too early Check and adjust
Uneven injection volume of fuel injection pump Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Difficulty in returning to low
speed
Defective governor Make adjustment
Compression leakage from valve seat Lap the valve seat
Excessive fuel consumption
Excessive cooling effect of radiator,
Defective thermostat (kept closed)
Repair or replace
Timing of fuel injection pump too late Check and adjust
Excessive fuel injection volume Check and adjust
Poor spray pattern from fuel injection nozzle Check and adjust
Engine used at high temperature or at high
altitude
Study output drop and load matching
Seized or broken piston ring Replace the piston ring
Excessive lubricating oil
consumption Worn piston ring, piston or cylinder Perform honing and use oversize parts
Improper arrangement of piston rings joint Correct the ring joint positions
Reverse assembly of piston ring Reassemble correctly
Foreign matter trapped in combustion chamber Disassemble and repair
Worn inlet/exhaust valve guide Measure and replace
Improper properties of lubricating oil Use proper lubricating oil
Leakage from lubricating oil piping system Repair
Excessive fuel injection volume Check and adjust
Seizure of inlet/exhaust valve Correct or replace
Lubricating oil diluted by
fuel Seized or broken piston ring Replace the piston ring
Worn piston ring, piston or cylinder Perform honing and use oversize parts
Blowout from cylinder head gasket Replace the gasket
Lubricating oil mixed with
water Cracked water jacket Repair or replace
Worn crankpin and journal bearing Measure and replace
Low lubricating oil pressure
Loosened connecting rod screw Tighten to specified torque
Cracked water jacket Repair or replace
Improper properties of lubricating oil Use proper lubricating oil
Leakage from lubricating oil piping system Repair
Insufficient delivery capacity of trochoid pump Check and repair
Clogged lubricating oil filter Clean or replace
Defective pressure regulating valve Check, adjust or replace
Insufficient lubricating oil level Add proper lubricating oil
Compression leakage from valve seat Lap the valve seat
Excessive blow-by gas
8. Seizure of inlet/exhaust valve Correct or replace
Seized or broken piston ring Replace the piston ring
Worn piston ring, piston or cylinder Perform honing and use oversize parts
Seized crankpin metal or bearing Repair or replace
Improper arrangement of piston rings joint Correct the ring joint positions
Reverse assembly of piston ring Reassemble correctly
Foreign matter trapped in combustion chamber Disassemble and repair
Worn inlet/exhaust valve guide Measure and replace
Improper properties of lubricating oil Use proper lubricating oil
Clogged lubricating oil filter Clean or replace
Excessive fuel injection volume Check and adjust
Blowout from cylinder head gasket Replace the gasket
Overheating of coolant
Seized or broken piston ring Replace the piston ring
Insufficient cooling effect of radiator,
Defective thermostat (kept opened) or slipping
fan belt
Repair or replace thermostat and fan
belt
Insufficient coolant level Check leakage from cooling system
Cracked water jacket Repair or replace
Slackened fan belt Adjust the belt tension
Defective thermostat Check or replace
Excessive fuel injection volume Check and adjust
Engine used at high temperature or at high
altitude
Study output drop and load matching
Excessive cooling effect of radiator,
Defective thermostat (kept closed)
Repair or replace
Low coolant temperature
Defective thermostat Check or replace
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Air inlet pressure drop
Compression leakage from valve seat Lap the valve seat
Seizure of inlet/exhaust valve Correct or replace
Clogged air filter Clean
Engine used at high temperature or at high
altitude
Study output drop and load matching
Air inlet pressure rise Excessive fuel injection volume Check and adjust
Improper clearance of inlet/exhaust valve Adjust the valve clearance
Exhaust temperature rise
Compression leakage from valve seat Lap the valve seat
Seized or broken piston ring Replace the piston ring
Insufficient cooling effect of radiator,
Defective thermostat (kept opened) or slipping
fan belt
Repair or replace thermostat and fan
belt
Insufficient coolant level Check leakage from cooling system
Slackened fan belt Adjust the belt tension
Timing of fuel injection pump too late Check and adjust
Uneven injection volume of fuel injection pump Check and adjust
Excessive fuel injection volume Check and adjust
Clogged exhaust pipe Clean
9. Service Information
Document Title: Function Group: Information Type: Date:
Engine trouble shooting 210 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Engine trouble shooting
Engine faults must be detected and rectified as quickly as possible in order to avoid more expensive repairs. The
following table summarizes the most important faults and their rectification.
Problem/fault Possible cause of fault Fault remedy
Starter switch defective Tighten connections. Replace the switch.
Engine does not
start Starter power too low If the starter is OK, check condition of battery and
electric connections.
Air in fuel system Bleed the system.
Air filter dirty Replace the air filter.
Wrong oil viscosity Check viscosity and fill in correct oil.
Engine too cold Check the function of the preheater plug.
Injection valves defective Check and adjust the injection valves
Replace defective valves.
Incorrect injection timing Adjust the injection timing. Check the valve
clearance.
Compression pressure too low Check condition of cylinder head gasket, valves and
piston rings.
Fuel tank empty Fill in fuel.
Engine shuts down
automatically Air in fuel system Bleed the fuel system.
Fuel filter dirty Clean or replace the fuel filter.
Fuel pump defective Check connection of fuel pump or replace fuel
pump.
Exhaust system clogged Clear or replace the exhaust system.
Fuel pump defective Replace the pump.
Erratic running of
engine Fuel filter dirty Clean or replace the fuel filter.
Bleed the fuel system.
Air filter dirty Clean the air filter. Check the intake air.
Injection valves defective Check and adjust the injection valves
Replace defective valves.
Cooling system elements defective Check elements (water pump, radiator, thermostat,
cylinder head gasket, coolant hoses).
Engine overheating
Fan not running Check presence, tension and cleanliness of V-belt.
Lubrication system elements defective Check elements (oil filter, oil pump, suction filter)
and replace defective parts.
Incorrect injection timing Adjust the injection timing. Check the valve
clearance.
Engine overheating
Oil level too low Fill in oil. Check whether the oil in the engine meets
the operating conditions.
Governor incorrectly adjusted Adjust the governor.
Coolant level not correct Correct the coolant level. Check whether the
coolant meets the operating conditions.
Air cleaner soiled Clean or replace the air filter.
Engine develops
black smoke Poor fuel quality Check quality of fuel and suitability for climatic
10. conditions.
Valve clearance and injection timing not
correct
Adjust valve clearance and injection timing.
Compression pressure not O.K. Check condition of cylinder head gasket, valves and
piston rings.
Injection pressure not O.K. Check and adjust the injection valves
Injection pump defective Check injection pump, replace if necessary.
Engine control cable incorrectly adjusted Adjust the control cable.
Irregular idle speed
Poor engine oil quality Fill in oil as required for the operating conditions.
Poor fuel quality Check quality of fuel and suitability for climatic
conditions.
Valve clearance and injection timing not
correct
Adjust valve clearance and injection timing.
Opening pressure of injection valves not
correct
Check opening pressure and injection valves.
Compression pressure not O.K. Check condition of cylinder head gasket, valves and
piston rings.
Injection pump defective Check injection pump, replace if necessary.
Poor fuel quality Check quality of fuel and suitability for climatic
conditions.
Unusual engine
noise
Air cleaner soiled Clean or replace the air filter.
Incorrect injection timing Adjust the injection timing.
Engine shut-down solenoid not O.K. Check the engine shut-down solenoid.
Injection pressure not O.K. Adjust the injection valves.
Compression pressure not O.K. Check condition of cylinder head gasket, valves and
piston rings.
Injection pump defective Replace the injection pump.
Oil level and oil quality not correct Check oil level and oil quality and fill in specified
oil.
Oil pressure too
low
Oil pressure switch defective Check and replace the oil pressure switch.
Fan V-belt too loose Tighten the V-belt or replace, if defective.
Battery charge
condition too low Generator defective Check and replace the generator.
Battery defective Replace the battery.
Wiring not O.K. Check correct connection of cables.
Regulator defective Check regulator, replace if necessary.
Starter switch defective Tighten connections. Replace the switch.
Engine cannot be
shut down Engine shut-down solenoid not O.K. Check engine shut-down solenoid, replace if
necessary.
11. Service Information
Document Title: Function Group: Information Type: Date:
Compression pressure
inspection
Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Compression pressure inspection
Compression pressure drop is one of major causes of increasing blow-by gas (lubricating oil contamination or increased
lubricating oil consumption as a resultant phenomenon) or starting failure. The compression pressure is affected by the
following factors:
1.
2.
3.
Degree of clearance between piston and cylinder
Degree of clearance at intake/exhaust valve seat
Gas leak from nozzle gasket or cylinder head gasket
In other words, the pressure drops due to increased parts wear and reduced durability resulting from long use of the engine.
A pressure drop may also be caused by scratched cylinder or piston by dust entrance from the dirty air cleaner element or
worn or broken piston ring. Measure the compression pressure to diagnose presence of any abnormality in the engine.
Compression pressure measurement method
Figure 1
Measurement, compression pressure
1. Compression gauge
1.
2.
3.
4.
After warming up the engine, remove the fuel injection nozzle from the cylinder to be measured.
Crank the engine before installing the compression gauge adapter.
Perform cranking with the stop handle at the stop position (no injection state).
Install the compression gauge and compression gauge adapter at the cylinder to be measured.
NOTE!
Do not forget to install a gasket at the tip end of the adapter.
Crank the engine by the starting motor until the compression gage reading is stabilized.
Standard compression pressure
Standard: 30 kgf/cm2 (427 psi)
Limit: 26 kgf/cm2 (370 psi)
Dispersion among cylinders: 3 kgf/cm2 (43 psi)
12. Service Information
Document Title: Function Group: Information Type: Date:
Valves, adjusting Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Valves, adjusting
Adjusting the valves
Figure 1
Op nbr 21412
NOTE!
Clean the area around the rocker cover before starting adjustment work.
1. Pull off the hose for crankcase ventilation.
2. Remove the cylinder head cover.
3. Crank the engine until the valves are overlapping.
NOTE!
Overlapping of valves means: Exhaust valve not yet closed, intake valve starts to open. In this situation the push
rods cannot be turned.
13. Figure 2
4. Adjust the valve clearance on the respective cylinder using a feeler gauge.
5. Tighten the counter nut. Check the adjustment again with the feeler gauge.
6. Attach the gasket to the rocker cover.
7. Install the rocker cover. Tighten the screws with a torque of 11.3 Nm.
8. Push on the crankcase ventilation hose.
Intake: 0.25 mm (0.01 in)
Exhaust: 0.25 mm (0.01 in)
Valve clearance values
14. Service Information
Document Title: Function Group: Information Type: Date:
Lubricating system,
description
220 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Lubricating system, description
The oil pump delivers pressurized engine oil to lubricate the contact faces of moving parts, such as crankshaft,
camshaft, intake/exhaust valves, rockers and engine timing gears.
Schematic flow of lubrication oil
Figure 1
1.
2.
3.
4.
5.
6.
7.
Drain plug
Oil screen
Dipstick
Oil pump
Check valve
Oil filter
Oil pressure switch
16. Service Information
Document Title: Function Group: Information Type: Date:
Removing the oil filter 222 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Removing the oil filter
Op nbr 22202
Filter wrench
Figure 1
Remove oil filter
1.
2.
3.
Oil filter
Pressure switch
Oil pump
1. Place a bowl under the oil filter to catch running out oil.
2. Unscrew the oil filter from the engine block using the filter wrench.
17. Service Information
Document Title: Function Group: Information Type: Date:
Installing the oil filter 222 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Installing the oil filter
Op nbr 22202
Figure 1
1. Slightly oil the seal on the new oil filter with engine oil.
2. Screw on the new filter cartridge by hand. When the seal touches the contact face turn further for another 1/2 of a
turn.
3. Fill in 0.5 litres of oil.
4. Start the engine and check for leaks in the vicinity of the filter.
5. Shut the engine down. Check the oil level, fill up oil if necessary.
18. Service Information
Document Title: Function Group: Information Type: Date:
Removing the oil pressure
switch
222 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Removing the oil pressure switch
Oil pressure switch
Op nbr 22205
Socket wrench for oil pressure switch
1. Unscrew oil pressure switch using a socket wrench for oil pressure switch.
Figure 1
remove oil pressure switch
1.
2.
3.
Oil filter
Pressure switch
Oil pump
Oil pressure test
Op nbr
Ohmmeter
1. Check the current flow between terminal and housing with an ohmmeter, as shown in the illustration. If this current
flow is not assured replace the pressure switch.
19. Figure 2
Oil pressure test
2. Insert a small diameter rod into the oil bore of the pressure switch and push slightly in to check, whether current
flow is applied (see illustration). If this is the case, replace the pressure switch.
Figure 3
Oil pressure test
3. Blow with compressed air of 0.5 bar into the oil bore (arrow) to check whether current flow is present. If this is the
case, replace the pressure switch. Check the switch also for air leaks. An air leak may be caused by a broken orifice.
In this case the oil pressure switch must also be replaced.
20. Suggest:
If the above button click is invalid.
Please download this document
first, and then click the above link
to download the complete manual.
Thank you so much for reading
21. Service Information
Document Title: Function Group: Information Type: Date:
Installing the oil pressure
switch
222 Service Information 2014/4/16
Profile:
CEX, EC45 [GB]
Installing the oil pressure switch
Op nbr 22205
Socket wrench for oil pressure switch
1. Cover the thread on the oil pressure switch with sealing compound. Turn in the oil pressure switch and tighten with
the socket wrench to 10 ± 2 Nm.