Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 700R4 rear seal leak
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Old 04-03-2006, 07:03 PM
Chazmac Chazmac is offline
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You could have a yoke problem. Check the polished area of the yoke. It must be smooth and even, no wear in the bushing area. If the yoke is worn, replace it and the tailshaft bushing. Also check to see if the yoke has a rust area (even if it was polished) where the seal surface is riding. This will cause the seal to leak past the rust. Check to see if the yoke has a breather hole drilled in the center of the welch plug in front of the U-joint. If so, it needs to be welded shut, or get a yoke seal sleeve from a trans shop. These were commonly used in 2wd trucks and vans.
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