AOD REAR OUTPUT shaft, buSHING - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-22-2003, 08:24 AM
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AOD REAR OUTPUT shaft, buSHING

am GETTING VIBRATION SOUNDS FROM TRANNY. IT APPEARSAT CRUISING SPEEDS BETWEEN ON OR OFF ACCELERATION- DECELERATION. THERE IS SOME PLAY IN YOKE . U-JOINTS ARE FINE. I RUN A 3.80 AXLE RATIO. HAVE READ SOME INFO ON BAUMAN REARLUBE MODIFICATION TO OUTPUT SHAFT / SPEEDO GEAR? IS THERE A BUSHING IN THERE THAT NEEDS REPLACING? CAN THIS BE FIXED WITHOUT PULLING TRANNY?
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Old 10-22-2003, 08:48 AM
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Don't know what kind of trans. you have. You can change the tail housing bushing without pulling the trans on gm.

Please do not use caps as they are considered shouting.

Troy
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Old 10-22-2003, 05:33 PM
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aod rear tail bushing

if the bushing was bad you would have leak from rear seal and a lot of up and down movement where drive shaft yolk slides in bushing. is drive too short or front u joint bad? what car or truck are we talking about
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Old 10-26-2003, 01:47 AM
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My T-bird is doing the same thing. I put new U-joints in it a couple of years ago (~160,000mi.), & it cut the vibration down quite a bit, but not entirely. I put a new rear seal on while the shaft was out, & it doesn't leak, but the vibration seems to be getting worse, in fact it does it under load now at anything over 80mph. I'm going to try a new rear bushing real soon.
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Old 10-26-2003, 08:53 AM
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It would be nice to have some info on what it is you are working on. Although most cars work under the same principals, they are all different.

You might want to check all of your mounts. Also check the yoke on the rear end for play. I also believe if it was in the rear bushing of the trans, it would be leaking.
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Old 10-26-2003, 10:00 PM
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Here's some info on the AOD:
http://www.victrans.com/aod.html
and the Baumann site:
http://www.baumannengineering.com/aodcat.htm
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