(Table 69, contd)
Troubleshooting Test Steps
Values Results
4. Inspect the Starter Pinion and Flywheel Ring Gear
A. Test the operation of the starting motor.
B. Check the pinion clearance. Inspect the pinion and the fly-
wheel ring gear for damage. Refer to Systems Operation, Test-
ing, and Adjusting, “Electrical System” for additional
information.
Starter pinion
and flywheel ring
gear
Result The starter pinion and flywheel ring gear are OK.
Proceed to Test Step 5.
Result The starter pinion and flywheel ring gear are not
OK.
Repair: Make the necessary repairs.
5. Inspect Engine Accessories and the Transmission (if
applicable)
A. Ensure free movement of the driveline.
B. Remove and inspect any engine accessories that may lock
up the engine.
The following list identifies engine accessories that may lock up
the engine:
· Hydraulic pump that is driven from the rear gear group
· Air compressor
· Engine oil pump
· Other components that are driven by the engine
Engine accesso-
ries and
transmission
Result The engine accessories and transmission are OK.
Proceed to Test Step 6.
Result The engine accessories and transmission are not
OK.
Repair: Make the necessary repairs.
6. Hydraulic Cylinder Lock
A. If an injector has been replaced, evacuate any fluids from the
cylinder and attempt to start the engine. Fuel will flow from the
cylinder head into the cylinders when a unit injector is removed.
B. If the engine will not start, check for fluid in the cylinders (hy-
draulic cylinder lock) by removing the individual unit injectors.
Check for damaged seals. Determine the type of fluid that
locked up the cylinder.
C. If there was a coolant leak, determine the cause of the leak.
Check the exhaust (NRS) cooler for leaks. Refer to Testing and
Adjusting, “Exhaust Cooler (NRS) - Test”.
D. If there was excessive fuel in the cylinder, replace the seals
and reinstall the injector. Drain any excess fuel from the cylinder
head.
E. If a mechanical problem is suspected, disassemble the en-
gine. Refer to the Disassembly and Assembly manual. Inspect
the internal components for the following conditions:
· Seizure
· Broken components
· Bent components
Hydraulic cylin-
der lock
Result The engine has a hydraulic cylinder lock.
Repair: Make the necessary repairs.
Result The engine does not have a hydraulic cylinder lock.
Contact the Dealer Solutions Network (DSN).
UENR4469-36 141
Symptom Troubleshooting
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