TM 5-4310-376-14
TabIe 5-1. Direct Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a. Inspect cylinder bore for any signs of scoring and scruffing, as indicated by visible
ridging at the end of the ring travel.
Replace cylinder (para 5-5).
b. Inspect piston for signs of scoring or any indication of cracked or broken lands.
Check ring grooves for sign of excessive wear.
c. Inspect for worn or scored connecting rod, piston pin, or crankpin bushing.
Replace defective part(s) (para 5-6, 5-8).
d. Inspect for worn crankshaft.
Replace crankshaft (para 5-8).
6. COMPRESSOR FAILS TO BUILD UP PRESSURE, OR OIL IN DISCHARGE AIR
Remove cylinder (para 5-10); inspect cylinder bore and piston for damage. Inspect
piston rings for defects; broken or not seated in, end gaps not staggered, stuck in
grooves, rough, scratched or excessive end gap over .020" worn (.508mm), or side
clearance over .006" (.152mm).
Replace cylinder or piston if defective. If any piston ring defective,
5-5