TM 5-4310-376-14
Table 4-2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Check oil fill.
Dipstick is marked "DO NOT OVERFILL". Drain excess oil.
6. ENGINE STOPS SUDDENLY
Step 1. Remove spark plug, pour a small amount of gas in spark plug hole; re-
place plug. Pull starter. If engine fires a few times and quits, carbure-
tor is defective.
Replace carburetor (para 4-28)
Step 2. If engine does not fire after priming, armature and coil are defective.
Replace armature and coil (para 4-31)
7. ENGINE DOES NOT IDLE WHEN UNLOADING CONTROL VALVE DISCHARGE VENT
OPENS.
Step 1. Check control tube for kinks, bends, or other damage which may cause air
to be blocked to air cylinder.
Replace control tube (para 4-20).
Step 2. Check governor linkages, control arm, and slowdown rod for binding.
Replace defective part(s). Check adjustment (para 4-32).
8. UNLOADING CONTROL VALVE DOES NOT DISCHARGE, AIR RECEIVER TANK SAFETY
VALVE DISCHARGES.
Manually operate unloading control valve safety valve several times to clear.
Replace unloading control valve (para 4-18).
9. SAFETY VALVE RELEASES AIR BELOW WORKING PRESSURE OF 200 PSI.
Step 1. Check to see that safety valve is mounted correctly with no air leaks
around fittings.
Tighten all connections.
Step 2. Check for malfunction, unload air from air tank, let pressure build up and
observe pressure reading when safety valve releases. Do this several times
to verify malfunction.
Replace safety valve (para 4-35).
4-21
