TM 9-2320-273-20
Table 4-1. Engine and Engine Systems Troubleshooting (Continued).
MALFUNCTION.
TEST OR INSPECTION.
CORRECTIVE ACTION.
18. ENGINE OVERHEATS (Continued):
Step 2.
Check for loose or broken fan belts.
Tighten or replace belts (para 4-45).
Step 3.
Check thermostat.
Replace thermostat (para 4-43).
Step 4.
With engine running and radiator cap removed, check for proper coolant flow.
a.
Check for clogged radiator hose. Clean or replace hoses (para 4-39).
b.
Replace water pump (para 4-53).
Step 5.
Check fan clutch actuator.
a.
Check actuator tubes. Replace if necessary (para 4-48 or 4-49).
b.
Replace actuator (para 4-46 or 4-47).
c.
Replace fan clutch (para 4-45).
d.
Refer problem to Direct Support Maintenance.
4-6
