Jim Yergin Posted March 2, 2009 Author Report Posted March 2, 2009 Today I managed to remove the transmission. The Harbor Freight transmission scissor jack I bought based on Normspeed's tip has proven to be a very good investment. There is no doubt the clutch was burned out. Pretty bad after less than 1000 miles. Fortunately it looks like the flywheel surface is OK. I was relieved to see that my fear that the clutch failed because the rear main seal on the engine leaked and oil had gotten on the clutch was not true. No sign of leaking. I did find that when I went to check the travel of the throwout bearing on the input shaft, it is possible to get the bearing just slightly cocked and then it will only travel back half the way on the shaft. Barring the possibility of installing the disc backwards, I think the problem may have arisen when I installed the subsitute transmission and got the throwout bearing misaligned. Can someone confirm that this side of the disc goes towards the pressure plate? I have decided that I agree with Moose that bigger is better and will replace the clutch with a 10" one. Jim Yergin Quote
Jerry Roberts Posted March 2, 2009 Report Posted March 2, 2009 Jim , Some of the clutch disks are marked " this side toward flywheel " or something to that effect . Also , Take your disk and set it up against the flywheel to see if all of that material that protrudes will fit into the recess of the flywheel . Quote
Dodgeb4ya Posted March 2, 2009 Report Posted March 2, 2009 Raised damper spring assembly faces to the pressure plate. Something had to be not adjusted correctly (Freeplay), pressure plate spring clamping load too weak, Incorrect parts, throwout bearing holding against pressure plate fingers or riding the clutch, or a teenager going for a midnight joy ride! Not that I ever did that with my dad's Buick GS! Bob Quote
James_Douglas Posted March 2, 2009 Report Posted March 2, 2009 Don, No the input shaft is NOS. It is however hard as a rock and would take a lathe or machine grinder to take it down. I spent 2 hours with 180 grit and it did not take off 0.0005... I think these things are case hardened when produced. I am switching to the old shaft. The old shaft and the old M6 input shaft are the same size. Only the NOS shaft is .001 over. Since I had the fluid coupling redone it is possible that the replacement bearings inside are on the "narrow" side of the specification. That coupled with an input shaft that is on the high side of that specification they just will not fit. A classic case of "stacking tolerances". ****************** Jim, let me know if I can help out in any way. Best, James James Quote
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