TM 5-3805-281-24-1
Diagnostic Information
Symptom
Problem
Solution
Water in fuel
Drain tank water trap, inspect filter
element for water. Replace filters.
Fuel filter plugged
Replace filter.
Fuel injection pump out of time
Time injection pump. See Engine
Repair chapter.
Slow idle speeds adjustment too low
Adjust slow idle speed. See Group
9010
15
9010-20.
3
Engine overheating
Test cooling system. See Group
9010-25.
Fuel transfer pump
Test pump pressure. See Engine
Repair chapter.
Fuel injection pump
Remove and test fuel injection
pump. See your Local Fuel Injection
Pump Service Center.
Injection nozzle(s)
Remove and test nozzle(s). See
Engine Repair chapter.
Improper valve clearance
Check and adjust valve clearance.
See Engine Repair chapter.
Valve sticking or burned
Do compression pressure test. See
Engine Repair chapter.
Bent push rods
Inspect. Replace. See Engine Repair
chapter.
Worn or broken compression rings
Place end of radiator overflow hose
or cylinder head gasket leaking
(between radiator and coolant
recovery tank) into a container of
clear water. Operate engine at fast
idle under a load. A constant flow of
bubbles indicates head gasket
leakage. Replace gasket. See
Engine Repair chapter.
Do compression pressure test. See
Engine Repair chapter.
Continued on next page
CED,TX14795,4357
1917APR983/12
3-31
