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post #1 of (permalink) Old 12-12-2002, 01:30 PM
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Front diff. pinion seal

I finally got the nut loose. Have new pinion seal. The parts store mentioned shims? Anybody have any info? Thanks Ralph P, New Jersey
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post #2 of (permalink) Old 12-12-2002, 03:42 PM
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Re: Front diff. pinion seal

What are you working on?
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post #3 of (permalink) Old 12-12-2002, 03:54 PM
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Re: Front diff. pinion seal

Thanks for your responce. 85 CJ 7 6 cyl 258. 4 Speed
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post #4 of (permalink) Old 12-13-2002, 06:38 AM
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Re: Front diff. pinion seal

Shims aren't involved in swapping the pinion seal. Pry the old one out. Put a film of oil on the new one and carefully tap it back in. Put the washer and nut back on and tighten til surrounding metal turns pink. Not really. Look up the spec, or get it from a dealer, and tighten the nut to it. That is rather important.
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post #5 of (permalink) Old 12-13-2002, 06:56 AM
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Re: Front diff. pinion seal

You *can* add/remove shim from behind the outer pinion bearing if it's too tight/loose. When I changed my seal, the rear bearing was still flopping in the race. Since it doesn't affect the pinion depth, you'd be OK doing this. You'll have to SLOWLY remove the thin shims one at a time and re-torque the nut each timer though...PITA. Since it's the front axle, I "guesstimated" and stopped when I had about .005-.010" of wiggle in the rear bearing, replace the seal, and re-torqued. No problems after 5-6 pretty hard runs.
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