TM 5-4310-386-14
Table 5-1. Direct Support Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. SIGHT GLASS EXHIBITS AIR BUBBLES.
Step 1. Check oil pressure regulator.
Clean and adjust regulator (para. 5-12).
Step 2. Check oil pump final pressure.
Clean or replace (para. 5-11).
Step 3. Check 4th stage valve head assembly.
Replace or repair 4th stage valve head assembly (para. 5-23).
6. COMPRESSOR DOES NOT AT-AIN FINAL PRESSURE.
Step 1. Check fourth stage safety valve.
Replace a defective fourth stage safety valve (para. 5-24).
Step 2. Check interfilter drain valves.
Clean, repair, or replace (para. 5-17).
Step 3. Check interfilter safety valves.
Replace any safety valve that is defective (para. 5-16).
7. EXCESSIVE VIBRATION OF UNIT.
Step 1. Fuel injection pump timing off.
Check, adjust if necessary (para. 5-30).
Step 2. Frame cracked.
Weld, replace as necessary (para. 5-49).
5-4
