Table 4-1. Troubleshooting - continued
PROBLEM
POSSIBLE CAUSE
REMEDY
Clutch overheating -
3. Dirt in driving ring or
Disassemble and clean.
Continued
spider.
4. Plates not free on hub.
Disassemble and clean, de-burr or re-
place defective parts.
Clutch noisy
1. Pressure plate and
Disassemble, clean or replace if defec-
insulator not fully
tive.
disengaging.
2. Excessive wear from
Realign clutch and driven member.
misalignment or from
Refer to Drive Clutch Drags or Will
clutch not fully dis-
Not Disengage.
engaging.
Brake will not hold
1. Control linkage out of
Adjust control linkage.
adjustment.
2. Worn or wet brake
Replace brake lining if worn. Dry brake
lining.
lining if wet.
Brake will not re-
Control linkage out of
Adjust brake control linkage.
lease
adjustment.
Brake grabs
1. Broken brake lining.
Replace brake lining.
2. Grease on brake lining.
Replace brake lining.
Hoisting drum jerks
1. Stretched drive chains.
Replace drive chains.
or does not rotate
2. Damaged or worn
Inspect drive gears. Replace if worn
gears in drive assem-
or damaged.
bly.
3. Broken teeth on drive
Replace drive sprockets.
sprocket.
4. Damaged splines in
Inspect clutch and replace any damaged
clutch.
parts.
Excessive noise
1. Worn or damaged
Inspect bearings. Replace any found
when hoisting drum
bearings.
worn or damaged.
is operated
2. Worn or damaged
Replace worn or damaged gears.
gears in drive assem-
bly.
4-14
