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post #1 of (permalink) Old 03-23-2000, 12:51 PM
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Amc model 20 inner axle oil seal

I need to replace the inner axle oil seal. I know I will have to pull the differential to replace the seal. The haynes manual does not cover this.

What is the best way to pull the axles out?
What are the torque spec's for the bearing caps?
Do I need to worry about the shim's in the differentail?
Anything else that I am missing?

or should I just check the fluid once a week and go on?
or just wait to replace the seal when I put a locker in?

thanks

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post #2 of (permalink) Old 03-23-2000, 01:10 PM
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Re: Amc model 20 inner axle oil seal

I thought that the seal is out near the hub. Thats the only one I've ever seen. Some don't even have a inner seal, just he hub seal.


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post #3 of (permalink) Old 03-23-2000, 01:26 PM
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Re: Amc model 20 inner axle oil seal

It showed it in the manual. They also show that outer seal too, I don't want to pull the differnetial to do the inner one.

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post #4 of (permalink) Old 03-23-2000, 01:40 PM
 
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Re: Amc model 20 inner axle oil seal

You do not have to pull the differential to replace the seal.
You can simply unbolt the bearing retainer, pull the hub and axel out as an assembly and use a seal puller to remove the seal. The seal is located just behind the bearing.
I think your thinking of the Dana 30 where the seal is right next to the differential.
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post #5 of (permalink) Old 03-23-2000, 01:51 PM
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Re: Amc model 20 inner axle oil seal

My Model 20 has inner seals that are right next to the carrier. They are a goofy shaped thing, a seal with a kind of funnel shaped extension so that the axle doesn't knock out the seal when you put it back. You have to remove the carrier to do it. Unless you looked you wouldn't know they were in there. Usually replacing the outer seal is enough to stop leaking.

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post #6 of (permalink) Old 03-23-2000, 01:54 PM
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Re: Amc model 20 inner axle oil seal



14 - inner seal
22 - outer seal

post #7 of (permalink) Old 03-23-2000, 03:53 PM
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Re: Amc model 20 inner axle oil seal

I have had my Model 20 completely disassembled many times and there is no seal next to the carrier. Just like the picture above shows, The assembly has 2 seals per side. One behind the axle bearing and one infront of the axle bearing. Both are positioned near the outer ends of the axle tubes.
The only thing I can think of that might make a difference is year of manufacturing. Maybe the later years changed. All I know is the 76-79 centered model 20 has the same seal configuration. Hope fully someone can shed some light on this mystery.


post #8 of (permalink) Old 03-23-2000, 03:59 PM
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Re: Amc model 20 inner axle oil seal

have never seen that inner one either.. have torn down plenty. well just replace the outer two.. as shown on diagram.. torque that nut down to like 250lbs of torque.. dont know the exact specs.. but that is the least i put them on with. if you have one piece axles dont worry about that. if you have the 2 piece and cant get the nut off put a puller on it.. get it good and tight.. and leave it over night... then should just pop off.. good luck

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post #9 of (permalink) Old 03-23-2000, 04:10 PM
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Re: Amc model 20 inner axle oil seal

Just goes to show me, I learn something everyday. I am going to do this weekend.

Thanks for all the good advice.

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post #10 of (permalink) Old 03-23-2000, 06:14 PM
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Re: Amc model 20 inner axle oil seal

This is all real strange, because when I took mine apart in Nov. to put the Detroit Locker in I replaced the seals on the inside with the ones I described above. It is a 1985 CJ-7 with a Model 20. Of course old age could have screwed up my memory, maybe I'm thinking of the Dana 30 which was apart at the same time. One of those axles had the funny looking seals beacause I bought them at NAPA and put them in!

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