TM 5-4310-386-14
Table 4-2. Unit Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
17. COMPRESSOR WILL NOT LOAD.
Step 1. Check to see if pressure relief valve is leaking or not closing properly.
Adjust or replace. Notify Direct Support Maintenance.
Step 2. Check to see if bleed valve is open.
Close.
Step 3. Check to see if cartridges are not in purifiers.
Notify Direct Support Maintenance.
18. COMPRESSOR OUTPUT LOW.
Step 1. Check to see if air intake filter is clogged.
Clean or replace clogged air intake filter assembly (para. 4-22).
Step 2. Check to see if condensate drain valves are leaking.
Clean, tighten, and reset.
Step 3. Check to see if compressor is at rated speed.
Increase engine speed (para. 2-12).
19. LOW COMPRESSOR OIL PRESSURE (SHUTDOWN).
Step 1. Check to see if oil lines are leaking.
Repair/replace.
Step 2. Check to see if crankcase oil level is low.
Add oil as required.
Step 3. Check to see if flywheel fan cooling fins are dirty.
Clean dirty flywheel fan (para. 4-24).
4-27
