TM 5-4310-379-14
5-5. General Support Troubleshooting Procedures. Table 5-1 lists the common malfunctions that may be found
during operation. Refer to symptom index to locate the troubleshooting procedures for the malfunction. This manual
cannot list all malfunctions that may occur, nor all test or inspections and corrective actions. If a malfunction is not
corrected by listed corrective actions, notify your supervisor.
SYMPTOM INDEX
Symptom
Page
1.
Low compressor oil pressure.................................................................................................................... 5-2
2.
Low compressor output pressure.............................................................................................................. 5-2
3.
Compressor knocking.............................................................................................................................. 5-3
4.
Compressor oil in discharge air................................................................................................................ 5-3
Table 5-1. General Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
1
LOW COMPRESSOR OIL PRESSURE.
Step 1.
Check oil pump.
Replace a defective oil pump (para. 5-35).
Step 2.
Check intercooler
Replace a damaged intercooler (para. 5-27).
Step 3.
Check oil screen.
Clean oil screen with solvent and dry with compressed air.
2.
LOW COMPRESSOR OUTPUT PRESSURE.
Step 1.
Check intake valves.
Replace or repair defective valves (para. 5-30).
Step 2.
Check discharge valves.
Replace or repair defective valves (para. 5-30).
Step 3.
Check unloader valves.
Replace or repair defective valves (para. 5-28).
Step 4.
Check cylinder head gasket for leaks.
Replace cylinder head (para. 5-29)
5-2
Change 1
