TM 5-4310-389-14
Table 4-1. Direct Support Troubleshooting Procedures (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COMPRESSOR (Contd)
12. Compressor overheats (shutdown activates).
Step 1.
Check stage valves.
Replace as necessary.
Step 2.
Check compressor rings.
Step 3.
Check oil pressure.
Adjust as required.
13. Automatic condensate drain does not unload.
Step 1.
Check condensate drain circuit and solenoid.
Clean piston or replace as necessary.
Step 2.
Check condensate drain valves.
Dismantle, clean/replace as necessary.
14. Automatic drain leaks and blows off continuously.
Step 1.
Check valve seats and pistons.
Clean; replace as necessary.
15. Compressor speed low.
Step 1.
Check rpm.
Adjust rpm.
16. Engine does not turn over.
Step 1.
Check starter motor and pinion.
Repair or replace as necessary.
17. Engine gives poor performance.
Step 1.
Check fuel system.
Clean fuel system.
Step 2.
Check fuel delivery (fuel timing).
Adjust timing as required.
Step 3.
Check exhaust back pressure.
Replace muffler or spark arrestor if required.
18. Engine oil pressure zero or too low.
Step 1.
Check oil suction strainer for blockage or leakage.
Clean or change strainer. Notify General Support.
4-3
