Table 3-2. Operator and Crew Troubleshooting
Corrective action
Probable cause
Malfunction
a. Inflate tires
1. Tires Wear Unevenly.
a. Tires not in-
flated to proper pres-
(para 1-4).
b. Tighten wheel
b. Loose wheels.
mounting bolts (para
4-36).
a. Provide adequate
a. Ventilation
2. Compressor Over-
ventilation around unit.
inadequate.
heats.
b. Compressor
thoroughly.
cooling fins dirty.
c. Refer to LO 5-
oil level.
4930-207-12 and add
oil to proper level.
d. Service the air
d. Dirty air
cleaner (para 3-18).
cleaner.
a. Refer to LO 5-
3. Compressor is
oil level.
4930-207-12 and add
Noisy.
oil to proper level.
b. Compressor V-
V-belts (para 3-17).
belts improperly ad-
justed.
a. Service air
a. Air cleaner
4. Compressor Pumps
cleaner (para 3-18).
dirty and clogged.
Too Slow or
Fails to Build
b. V-belts im-
b. Adjust V-belts
Up Pressure.
properly adjusted.
(para 3-17).
c. Refer to LO 5-
4930-207-12 and add oil
oil level.
to proper level.
d. Excessive
thoroughly.
dirt around compres-
sor cooling fins.
a. Replace V-
a. V-belts loose
5. Compressor V-
or too tight.
belts (para 4-19).
Belts Worn Ex-
cessively.
b. Replace V-belts
b. Oil or grease
on V-belts.
(para 4-19).
a. Refill lubricant
a. Exhausted lu-
6. Insufficient
bricant supply.
containers (para 2-13).
Pressure or
Volume with
b. Push grease down
Lubrication
b. Slow circula-
around pump intake prim-
tion of grease.
Pumps operating
ing tube and use exhaust
diverter to warm grease.
c. Set air regulator
c. Insufficient
to higher pressure (para
air pressure supplied
2-15). Check for closed
to pump.
or inoperative valves or
obstructions (para 2-14).
a. Replace filler
a. Leak at filler
7. Compressor Oil
cap.
cap.
Consumption is
High.
b. Other causes
b. Refer other causes
to Direct and General
Support Maintenance
personnel.
3-3
