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#1: Grease inside 78 CJ7 brake drum

Posted on 2006-07-22 05:42:01 by ddintaman

Hello,
I recently took both my rear brake drums off to inspect the parts. I
noticed that the brake parts under one of the drums were filled with
grease. My question is where did the grease come from? axle? Did i
bust a bearing or seal of some sort? What parts do i need to replace?
thanks!

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#2: Re: Grease inside 78 CJ7 brake drum

Posted on 2006-07-22 12:45:15 by billhughes

Hi Don,
You should have the AMC 20 rear end, with inner and outer seals:
<a href="http://www.billhughes.com/temp/amc20axle.pdf" target="_blank">http://www.billhughes.com/temp/amc20axle.pdf</a> I would just the replace
the inner seal and repack the wheel bearing with grease, the outer seal
is mostly just a dust cover, and replacing it will ruin your hub, axle
strength. But if you're gluten for punishment, mark the hub and axle as:
<a href="http://www.billhughes.com/amc20hub.jpg" target="_blank">http://www.billhughes.com/amc20hub.jpg</a> You'll need a hub puller usually
free with a deposit from the store you bought the seal:
<a href="http://www.billhughes.com/puller.jpg" target="_blank">http://www.billhughes.com/puller.jpg</a>
God Bless America, Bill O|||||||O
mailto:<a href="mailto:LWHughes3rd&#64;aol.com" target="_blank">LWHughes3rd&#64;aol.com</a>

1978CJDon wrote:
&gt;
&gt; Hello,
&gt; I recently took both my rear brake drums off to inspect the parts. I
&gt; noticed that the brake parts under one of the drums were filled with
&gt; grease. My question is where did the grease come from? axle? Did i
&gt; bust a bearing or seal of some sort? What parts do i need to replace?
&gt; thanks!

Report this message

#3: Re: Grease inside 78 CJ7 brake drum

Posted on 2006-07-22 15:57:47 by Mike Romain

Is it grease or is it dirty oil?

If it is gear oil full of dirt, then I would suspect the seals, if it is
actually grease, then I would be worried about a bearing that had
overheated melting out all it's grease. If it was the bearing, you
should see some play in the axle with the weight off I would think.

When mine leaked gear oil, it would actually run down the inside of the
tire. If you park on a slope and oil pours out, you have found a bad
seal.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 <a href="http://www.imagestation.com/album/pictures.html?id=2115147590" target="_blank"> http://www.imagestation.com/album/pictures.html?id=211514759 0</a>
(More Off Road album links at bottom of the view page)

1978CJDon wrote:
&gt;
&gt; Hello,
&gt; I recently took both my rear brake drums off to inspect the parts. I
&gt; noticed that the brake parts under one of the drums were filled with
&gt; grease. My question is where did the grease come from? axle? Did i
&gt; bust a bearing or seal of some sort? What parts do i need to replace?
&gt; thanks!

Report this message