TM 5-4310-370-14
TABLE 5-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If main bearings are worn, remove and replace main
bearing assemblies.
Step 4.
Check to see if piston(s) is loose.
If piston(s) is loose, tighten down connecting rod bolts
or replace piston.
Step 5.
Check to see if piston(s) is hitting head(s).
If piston(s) is hitting head(s), remove any foreign matter
found and/or replace piston(s).
Step 6.
Check to see if there is excessive crankshaft end play.
(See Table 5-2)
If there is excessive crankshaft end play, replace crank-
shaft and also any other worn mating parts.
8. COMPRESSOR PUMP OVERHEATING
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
WARNING
Release pressure from air receiver and compressor pump before inspection,
performing procedures, or disassembly of equipment to avoid personal injury.
Step 1.
Check for defective or worn valve(s).
If valve(s) is defective or worn, remove and replace.
9. OIL IN DISCHARGE AIR
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
5-5
