clutch replacement

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#16

07-08-2017, 12:40 PM

Floyd55

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Quote:

Originally Posted by 1982_F150

It's more critical when dealing with hydraulic throwout bearings:

http://www.carquestbattery.com/commo...iveTC_2523.pdf

FLYWHEEL MACHINING
Flywheel resurfacing is critical to clutch performance and longevity. It is extremely important to restore
the proper step dimension where applicable. Dimensions for maintaining the proper step can be found in
the ARI Clutch catalog, Alldata or Mitchell on Demand. There is no specification for maximum
machining of a flywheel. However, the amount of material a flywheel is machined can vary anywhere
from .005 to .050 of an inch, depending upon its condition. Removing too much material from the
flywheel can cause release problems. The clutch set up geometry is changed as the overall thickness of a
flywheel is reduced; in fact, the clutch assembly is moved further away from the release bearing.
Flywheel shims are often available to solve this problem. ARI does NOT recommend this procedure.
Shimming will not allow the starter drive to engage the ring gear properly. Use of flywheel shims could
encourage installation of a flywheel that is too thin and flywheel balance could be compromised. Lack
of structural integrity may cause a "thin" flywheel to explode.
ARI recommends using one of their Quality Remanufactured Flywheels with each clutch installation.

If you could shim the slave would that be ok? That would let you get the slave throwout closer to the fingers giving you some extra push but it would ride the fingers more but at least you could get a release and then that would tell you if it was the slave not pushing deep enough on the plate to release, and if that does not work then maybe not enough master pressure or binding or clutch pivot arms sticking, or main shaft hitting the end of the crank and binding also. I think most of the problems are binding on the main shaft of the trans or the disc is not slipping on the main shaft maybe. I think to measure all dimensions to see if there is a binding and check the thickness of the disc vs. the bolt pull down of the plate to the fly wheel to see how much release is needed to move the disc and you can do this by making you a lever to push the fingers down after you bolt it to the flywheel under the shade tree! Lots of luck.

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