If the seals are to tight, they will get hot and destroy them selves. They are not holding back any pressure. A slight drag is all that is required.
Hey guys,
A customer brought me a set of axles out of a 71 Skylark to replace the bearings and seals. The new seals he purchased look identical to the old ones but in my opinion they are WAY too tight on the axle shaft. Even with assembly lube on them you can hardly turn them by hand ? I don't see many Buicks and these seals are different from most GM rears so I figured I would ask before proceeding.
Thanks,
Bill Koustenis
Advanced Automotive Machine
Waldorf Md
Original owner:
1971 Chevelle Heavy Chevy
1984 Buick Riviera
1999 Chevy Tahoe 2DR 4WD
Enginerepairshop.com
Senior Member
If the seals are to tight, they will get hot and destroy them selves. They are not holding back any pressure. A slight drag is all that is required.
Last edited by suntreemcanic; 09-08-2015 at 01:11 PM.
i'm sure the procedures in the 71 chassis manual will be applicable to a 72 axle.
http://www.teambuick.com/reference/library/71_chassis/
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Senior Member
If the rear is stock, it is an 8.5 10 bolt with bolt in axles. I know several individuals who have had problems with the axle seals, not that they are too tight, but they are not thick enough and that creates too much axle endplay. The correct seals should be a 712146, and they must be .490" thick. Check them. The correct bearing is an A9.
http://jdrace.com/diff_id/10b85.htm
Larry
1970 GS455 Stage1 Race weight 4025 lbs.
TSP 470, 602 HP, 589 TQ
MT headers, Gear Vendors Overdrive
Best E.T. 11.54 Best MPH, 116.06
1998 Riviera SC3800
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