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TM 10-4130-239-14
Table 4-2.
Unit Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Test high temperature thermal switch for continuity
(para 4-38).
Replace switch (para 4-37).
Step 3.
Test high and low pressure switches and low
temperature thermal switch for continuity (para 4-35,
4-36, and 4-40).
If any switch fails test, notify your supervisor.
4.
LOW ENGINE SPEED.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Check for fouled spark plug(s), grounded or open plug
wire(s) .
Clean or replace spark plug(s) (para 4-30) or
replace armature assembly (para 4-31).
Inspect muffler for restriction or damage.
Remove restriction or replace muffler as
necessary.
Check operation of governor controls (para 4-28).
Adjust or replace governor controls (para 4-28).
Check for water in fuel supply.
Replace with fresh fuel.
Inspect for seized compressor.
Notify Direct Support.
5.
ENGINE SMOKES EXCESSIVELY OR LEAKS OIL.
Step 1.
Check oil level.
Drain excess oil.
Step 2.
Check breathers for blockage (para 4-45).
Replace blocked or damaged breathers.
4-17
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