Clutch System Specs


Specs
Pedal height from asphalt sheet
Push rod play at pedal top
Pedal freeplay
Disc rivet head depth limit
Disc runout limit
Diaphragm spring out of alignment limit
Diaphragm spring finger wear depth limit
Width limit
Flywheel runout limit		 5.71"
0.039-0.197"
0.197-0.591"
0.012"
0.031"
0.020"
0.024"
0.197"
0.004"
Stock clutch clamping force '88-'89
Stock clutch clamping force '90-'91 		430 kg (948 lbs)
450 kg (992 lbs)


Torque Specs (ft-lbs)
Clutch line union
Reservoir tank x Master cylinder
Master cylinder set nut
Clutch pedal setting nut
Release cylinder set bolt
Clutch cover (pressure plate) x Flywheel **Loctite**
Release fork support
Bleeder plug x Release cylinder
Transmission x Block
Flywheel x Crankshaft **Loctite** 		11
18
9
18
9
14
27
8
35
54



Here are some troubleshooting tips from Centerforce...

Bearing Noise
Squeaking
Chattering
Grabbing
Slipping
Noisy
Drag
Worn/glazed disc facings x x x  
Insufficient "free pedal" travel x
Grease/oil on disc facings x x x
Improper/worn linkage adjustment x x x x
Weak/broken pressure springs x
Warped/grooved pressure plate x x x
Throwout bearing riding cover fingers x x
Pressure plate binding on stands x x
Clutch parts binding x x x x
Distorted clutch shaft x
Flattened/warped disc x
Bell housing misalignment x x
Facing dust in flywheel x x
Throwout bearing binding on sleeve x x
Bad motor mounts x
Worn fork x x
Worn throwout bearing x x
Uneven release levers x x
Cracked/broken pressure plate x x
Insufficient pedal/bearing travel x x
Damaged transmission splines x
Cover flange distorted/bent x
Excessive disc run-out x
Center drive/pressure plate binding x x
Center drive plate springs weak/broken x
Pilot bearing worn/frozen to shaft x x
Loose release fork on ball or in groove x x
Worn splines in disc hub x x
Clutch shaft splines worn x
Throwout bearing sleeve dry/worn x x
Broken release yokes x
pedal return spring ends over-center x x
Pressure plate scrubbing drive slots/lugs x
Pilot bearing loose in crankshaft x
Bad front transmission bearing x
Throwout bearing not square on collar x


Here are some installation tips from Centerforce...


    During installation, always:
  1. Determine cause of original clutch failure! If replacement is for other than normal wear, cause of failure MUST be properly diagnosed and repaired. If oil is present on clutch plate, leak MUST be corrected before installing new clutch.
  2. Check splines on transmission input shaft for signs of abnormal wear or twisting.
  3. Remove all traces of oil or grease from flywheel and cover assembly using an approved non-petroleum based cleaning agent.
  4. Resurface flywheel to insure proper, trouble-free, new clutch operation.
  5. Replace throwout bearing and pilot bearing (or bushing). Sparingly lubricate retaining collar bearing surface with lithium (white) grease.
  6. Use proper clutch alignment tool to insure correct positioning of cover, disc, and pilot bearing.
  7. Check disc on transmission shaft for free movement over splines. Also, rotate to check for run-out (wobble) of disc. If apparent, disc should not be installed. Lightly lubricate splines with a small amount of litium grease before final assembly.
  8. Thoroughly clean and inspect all linkage parts (fork, clevis, pin, etc.) and replace parts showing signs of wear.
  9. Be sure any special fasteners (shoulder, etc.) are placed in their proper locations during assembly.
  10. Torque all clutch cover bolts to proper specifications using a progressive criss-cross pattern.
  11. Adjust clutch pedal free play to correct specifications. This is a very important step that insures proper system operation and life.

    During installation, never:
  1. Remove balance weights from cover (Centerforce only) or disc.
  2. Get grease or oil on any friction surfaces.
  3. Use an impact wrench to tighten cover bolts
  4. Let transmission weight rest on input shaft.

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