TM 5-4310-386-14
Table 5-1. Direct Support Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. SAFETY VALVES BETWEEN STAGES RELEASING PRESSURE.
Step 1. Check first stage safety valve.
Replace first stage safety valve (para. 5-14).
Step 2. Check fourth stage safety valves.
Replace fourth stage safety valve (para. 5-24).
12. COMPRESSOR OVERHEATS (SHUTDOWN ACTIVATES).
Check oil pressure.
Adjust oil pressure regulator (para. 5-12).
13. AUTOMATIC INTERFILTER DRAIN DOES NOT UNLOAD.
Check interfilter drain circuit and solenoid.
Repair or replace as necessary (para. 5-17).
14. AUTOMATIC INTERFILTER DRAIN LEAKS AND BLOWS OFF CONTINUOUSLY.
Check automatic interfilter drain.
Replace or repair automatic interfilter drain (para. 5-17).
15. COMPRESSOR SPEED LOW.
Check engine rpm.
Adjust engine rpm.
16. ENGINE GIVES POOR PERFORMANCE.
Step 1. Check fuel system.
Clean fuel system.
Step 2. Check injection pump timing.
Adjust timing as required (para. 5-30).
5-6
