New Holland WorkMaster 50 Service Manual page 113

Clutch - Troubleshooting
Problem
Clutch slips
Clutch grabs
Clutch fails to disconnect
and drags
Clutch noise at
engagement and / or
disengagement
Clutch noise at
disengagement
Clutch control pedal
hardness
Clutch - Clutch and components
Possible Cause
Clutch disc, pressure plate and/or flywheel
wear.
Damaged or bent or broken fingers.
Oil or grease on friction material.
Stiff external control linkage.
Warped clutch disc.
Clutch disc with damaged damper springs
or loose hub.
Oil or grease on friction material.
Finger springs broken.
Warped clutch disc.
Damaged clutch release bearing.
Damaged finger spring.
Warped clutch disc.
Damaged clutch disc damper springs.
Excess backlash on clutch disc to hub
meshing splines.
Worn clutch release bearing.
Hard pedal.
Broken or disconnected clutch return
spring.
47866583_ 02/12/2015
18.2 [18.110] / 20
Correction
Replace clutch disc; replace clutch if nec-
essary and grind the flywheel.
Replace finger assembly.
Replace clutch disc; repair leak of lubricant
in to clutch housing; thoroughly clean fric-
tion surfaces.
Check and lubricate linkage pivot points.
Replace clutch disc.
Replace clutch disc.
Replace clutch disc; repair leak of lubricant
in to clutch housing; thoroughly clean fric-
tion surfaces.
Replace finger springs.
Replace clutch disc.
Replace clutch release bearing.
Replace finger springs.
Replace clutch disc.
Replace clutch disc.
Replace clutch disc and shaft, as neces-
sary.
Replace bearing.
Check and lubricate linkage.
Repalce or hook-up clutch return spring.