Panheadguy Posted July 3, 2013 Report Posted July 3, 2013 Hi all 1946 S11 seven pass limo. I'm baffled. New trans mounts, new engine mount in front. No slop in drive shaft. Something is bouncing badly up and down when the clutch is let out. Fwd or reverse doesn't matter. Any things to check you all can think of? If I let the clutch out fast it's less pronounced. Thanks Guy Quote
Dodgeb4ya Posted July 4, 2013 Report Posted July 4, 2013 Have someone look while you move car forward and backwards. Ought to be obvious. Rear spring wrap up with chattering clutch? Quote
Niel Hoback Posted July 4, 2013 Report Posted July 4, 2013 Sounds like grease or ol on the clutch disc lining. Quote
greg g Posted July 4, 2013 Report Posted July 4, 2013 chatter is usually caused by foreign material on the friction disc in classic symptoms. Most likely culprit is a leaky rear main seal. But could be improperly installed or over tightened rear motor mounts, A funky universal, or an out of phase drive shaft. Remove your dust cover on the bell housing, and check the friction disc, try rotating your dive shaft 180 degrees on one end or the other, or if you have the same U joints on both ends try flipping it end for end. Quote
OldDad67 Posted July 4, 2013 Report Posted July 4, 2013 On 7/3/2013 at 10:59 PM, Panheadguy said: Hi all 1946 S11 seven pass limo. I'm baffled. New trans mounts, new engine mount in front. No slop in drive shaft. Something is bouncing badly up and down when the clutch is let out. Fwd or reverse doesn't matter. Any things to check you all can think of? If I let the clutch out fast it's less pronounced. Thanks Guy Do you have a new pressure plate and clutch assy? Quote
Dodgeb4ya Posted July 4, 2013 Report Posted July 4, 2013 Also check the center driveshaft carrier bearing rubber support insulator and that it is not deteriorated and loose letting the drive shafts wobble. Quote
Panheadguy Posted July 6, 2013 Author Report Posted July 6, 2013 Thanks for all the thoughts. I'm going to have someone watch or drive and observe. I'm thinking clucth also. The center driveshaft mount is tight and the u joints are all good. I wonder if spraying the clutch with brake cleaner would help. Quote
oldodge41 Posted July 6, 2013 Report Posted July 6, 2013 (edited) Worn bushings in your rear leaf springs,either at the front mount or at the rear shackles, can also cause chattering. Edited July 6, 2013 by oldodge41 Quote
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