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TM 10-4320-307-10
Table 3-1. Operator/Crew Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7.
LOW LUBE OIL PRESSURE
Step 1.
Check the lube oil pressure sensing line for leaks. Leaks will cause false gauge reading.
If leaking, notify unit maintenance.
Step 2.
Check that crankcase is filled to the correct level.
CAUTION
Do not overfill. Oil will be blown out through crankcase breather if
crankcase is overfilled.
a.
If oil level is low, fill to proper level.
b.
Start engine and observe oil pressure gauge. If oil pressure is still low, notify unit maintenance.
8.
ENGINE OVERHEATS
CAUTION
Low air density of high altitude operation will tend to make the engine run
hotter. A high temperature condition may cause abnormal engine operation.
Step 1.
Check cooling system for leaks.
If cooling system leaks, notify unit maintenance.
Step 2.
Check lube oil level.
If lube oil level is low, fill to proper level.
Step 3.
Check for proper ventilation.
Ensure enclosure doors are closed for proper air flow.
Step 4.
Check for loose or damaged belts.
Notify unit maintenance to tighten or replace belt.
Step 5.
Check for dirty crankcase oil.
If crankcase oil is dirty, notify unit maintenance.
Step 6.
Check exhaust for restrictions.
Clear restrictions as required.
9.
COLD WEATHER START AID FAILS TO WORK
Step 1.
Check for loose ether cylinder.
If ether cylinder is loose, tighten as required.
Step 2.
Check for full cylinder.
If ether cylinder is full, tighten as required.
3-6
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