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post #1 of (permalink) Old 08-29-2000, 08:45 PM
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Help!!mysterious oil.

My 78 CJ5 is leaking oil around the drum brake on the rear AMC 20 axle. Do I have a wheel bearing going out or what?

78 CJ5/360
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post #2 of (permalink) Old 08-29-2000, 09:32 PM
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Re: Help!!mysterious oil.

There is a seal on the outboard side that can leak. I have an 83 CJ5 with solid axles, and the driver side is leaking as we speak.


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post #3 of (permalink) Old 08-29-2000, 09:44 PM
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Re: Help!!mysterious oil.

Is it oil OR brake fluid ? Double check , could be a slave cylinder .


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post #4 of (permalink) Old 08-29-2000, 09:49 PM
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Re: Help!!mysterious oil.

I would also suspect the rear axle seal. They are very easy to replace.

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post #5 of (permalink) Old 08-29-2000, 10:12 PM
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Re: Help!!mysterious oil.

unfortunately either of the above is a definate possibility. the axle seals on a D20 seem to be extremely prone to failing, especially with very large tires on them. it could also be the brake wheel cylinder leaking around the pistons. either way, it's a messy job , no matter what anyone tells you. and if you can see the oil outside the drum very much, you should probably replace the brake shoes, 'cause if they got saturated with oild/brakefluid the will have a tendency to grab/lock up, and could cause you to skid or otherwise lose control...

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