TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 162 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-10.
TROUBLESHOOTING SYMPTOM INDEX.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
ENGINE CRANKS BUT FAILS TO START (Continued).
Step 6.
Check for air intake restriction.
a.
Clean or replace air cleaner filter element
(para 3-30).
b.
Clean or replace air cleaner tube (para 3-32).
Step 7.
Check electrical system.
Troubleshoot starting system.
(Refer to malfunction 19).
Step 8.
Notify direct support maintenance.
3.
ENGINE WILL NOT IDLE.
Step 1.
Check for loose or broken fuel supply lines.
Tighten connections, or replace fuel supply lines (para
3-28 or 3-36).
Step 2.
Check for dirt and water in fuel.
Replace water separator fuel filter, and clean fuel filter
screen (para 3-27 and 3-37).
Step 3.
Notify direct support maintenance.
4.
ENGINE OVERHEATS (TEMPERATURE EXCEEDS 210°F).
Step 1.
Check for loose or broken fan clutch drive belts.
Adjust or replace belts (para 3-67).
Step 2.
Check for defective water temperature gage.
Refer to malfunction 31, steps 1 and 8.
2-37
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