ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
TABLE 3-2 Troubleshooting
ENGINE WILL NOT CRANK
Check for defective end item starting system.
Troubleshooting per end item maintenance manual. lf not defective, do step 2.
Check for defective starter motor and solenoid.
a Test starter and solenoid. Refer to paragraph NO TAG
b. Repair/replace defective starter and/or solenoid. Refer to paragraph 3-23.
STARTER OPERATES BUT ENGINE DOES NOT TURN OVER.
Check for worn or broken starter pinion gear and/or flywheel ring gear.
Remove starter and inspect pinion gear and flywheel ring gear for damage.
Replace defective clutch assembly and/or flywheel ring gear. Refer to paragraphs 3-23 and
Crankshaft rotation restricted. Attempt to manually rotate engine. If unable to manually rotate,
ENGINE CRANKS BUT FAILS TO START
Check for fuel being supplied to fuel injection pump.
Test feed pump capacity. Refer to paragraph NO TAG. If feed pump not defec-
tive, do step 2.
Repair or replace fuel feed pump. Refer to paragraph 3-11.
Check for dogged fuel filter/water separator.
Remove and dean fuel filter Assembly, paragraph 3-9. If dean, replace water separator, re-
fer to end item maintenance manual.
Check for air in fuel system lines.
Bleed fuel system. Refer to paragraph 3-12. If fuel system is free air, do step 4.
Check for fuel injector starling pressure too Iow or spray condition improper.
Remove, dean and test fuel injector. Refer to paragraph 3-10. Adjust as necessary, if injector
can not be adjusted, go to b. If not defective, do step 5.
Replace fuel injector. Refer to paragraph 3-10.
Check for improper fuel inject pump timing.
Check fuel injection pump timing. Refer to paragraph 3-13.1. If fuel injection pump timing is
correct, do step 6.
Adjust fuel injection pump timing. Refer to paragraph 3-132.
Check for defective fuel injection pump.
a. Remove and test fuel injection pump. Refer to paragraph NO TAG.
Repair or replace defective fuel injection pump. Refer to paragraph 3-11.