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#33
12-10-12, 02:50
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Quite the puzzle.....
HI Phil
Read through a few GM shop manuals.... so if I understand correctly..... with the clutch pedal fully depressed the clutch disc will not disengage...... If so... then none of the linkage adjustment or pedal bushings are to blame..... The only thing left is the mechanics of the clutch...... GM points out worn spline on tranny shaft and /or spline socket in center of clutch..... ....possibly a misalignment between the clutch housing and the pilot bushing in the end of the crank shaft.... Did you replace the bellhousing.....dowel alignment.... from BH to engine block? Something broken parts inside clutch pack...parts of which are moving and at times locking plate from movement.....but that usually applies to coil spring packs not the finger model... You are running a finger type clutch right...? weak or broken fingers..... Have you considered taking the clutch pack apart....making sure to punch locating marks before disassembly..... Almost has to be something mechanical that keeps the disc from moving even when you have full pressure on the fingers..... A lot has been written about clutch plates rusting on the flywheel after being parked for years..... and how to free them up.... not much found on a clutch that will rellease sometimes and sometimes not...... ....you would not have a HUP clutch in there by accident..... I hear they are fussy... Bob
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Bob Carriere....B.T.B C15a Cab 11 Hammond, Ontario Canada 
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