Table 4-1. Troubleshooting - continued
PROBLEM
POSSIBLE CAUSE
REMEDY
Clutch slips-
1. Insufficient air pres-
If operating in cold weather, the air
continued
sure - continued
lines may be restricted due to freezing
of the moisture in the air system. The
addition of Denatured alcohol or Ethy-
lene Glycol in the air receiver will
eliminate this problem. Avoid the use
of all rust inhibitors or commercial
antifreeze.
2. Ruptured tube.
Replace tube.
3. Malfunctioning quick
Repair or replace quick release valve.
release valves.
4. Drive rings worn out.
Replace drive rings.
5. Dirt in drive ring.
Disassemble and clean.
Clutch drags or
1. Misalignment of
Realign clutch and driving member.
will not disengage
clutch and driving
member.
2. Dirt in driving ring.
Disassemble and clean.
3. Tight center plate.
Replace center plate.
4. Quick release valves
Repair or replace quick release valves.
stuck.
Clutch overheating
1. Clutch slippage.
Refer to Clutch Slips.
2. Misalignment of
Align clutch and driving member.
clutch and driving
member.
3. Dirt in driving ring or
Disassemble and clean.
spider.
4. Plates not free on hub.
Disassemble and clean, de-burr or re-
place defective parts.
Clutch noisy
1. Pressure plate and in-
Disassemble, clean or replace if de-
sulator not fully
fective.
disengaging.
2. Excessive wear from
Realign clutch and driven member.
misalignment or from
Refer to Clutch Drags or Will Not
clutch not fully dis-
Disengage.
engaging.
4-11
