TM 5-4310-352-14
Table 5-1. Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. EXCESSIVE STARTING OR STOPPING
Step 1.
Check the receiver check valve for defect.
Remove check valve, disassemble and remove any dirt, dust or blockage from seat. Replace a defective check
valve (para 6-7).
Step 2.
Check pressure switch for wear.
Replace a defective pressure switch (para 64).
6. COMPRESSOR RUNNING HOT
Step 1.
Check for blockage of air to fanwheel.
Remove any restriction to flow of air to fanwheel.
Step 2.
Check for defective check valve in receiver.
Repeat Step 1 of paragraph 4 above.
Step 3.
Check for leaking, broken, carbonized, or loose valves.
Repeat Step 2 of paragraph 4 above.
Step 4.
Check for motor rotation.
Look at directional arrow at upper left of belt guard and see that belts are moving in that direction.
7. COMPRESSOR RUNNING SLOW
Step 1.
Check for low line voltage, or a defective starter heater.
Tighten loose connections. Replace a defective motor starter or heater (para 6-3).
Step 2.
Check for leaking or maladjusted centrifugal unloader pilot valve.
Tighten a loose, leaking valve seat. Replace a defective pilot valve (para 4-11).
Section III. GENERAL MAINTENANCE
There are no requirements for listing in this section.
Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS
The major components of this air compressor assembly
nance.
are removed and installed at lower levels of mainte-
5-2
