amc 20 rear brake problem - JeepForum.com
 
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post #1 of 12 Old 04-20-2009, 05:10 PM Thread Starter
CJ7Rubicon
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amc 20 rear brake problem

Let me say first,I hate drum brakes.And that I have no idea what to do with this problem.

Yesterday I went for a ride and smelled brakes burning.When I got it home the right rear drum was smoking.Took the drum off and this is what I see wrong.It would cause my problem I think,but if not feel free to let me know what you think.

When I pull the e brake and return it,one of the shoes does not return all the way.

Before



After pull and release



Might be a noob question,but I did not find it in search.


85 CJ7,Clifford equipped 258,TBI,RE4.5,35" Claws,Aussie lockers,8.8 rear.
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post #2 of 12 Old 04-20-2009, 05:26 PM
neals80
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did you just get break work done? it looks clean....most of the time grime will cause this, making the springs sticky....WHat if you put on the breaks not the ebreak ??same result....I would remove the good side that works and do quick comparison...sorry..I hate drum breaks too,,,like having a carb when you know there is better technology out there

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post #3 of 12 Old 04-20-2009, 05:31 PM
rkbell
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Unless you removed it yourself, your brake adjuster is missing (should be on the bottom between the two shoes).

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post #4 of 12 Old 04-20-2009, 05:54 PM Thread Starter
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Its there,just the angle of the pic has it hidden.

Yes,I just got it back again from the shop that put the arb and yukons in it.I took it back because the rear seal was leaking,now there is this new problem.

It does it with the pedal too.The edge of the shoe is hanging up on the backing plate.I have to force it back into place.

85 CJ7,Clifford equipped 258,TBI,RE4.5,35" Claws,Aussie lockers,8.8 rear.
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post #5 of 12 Old 04-21-2009, 02:39 PM
neals80
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Im lost...It looks like fluid from the calipers or the bad seal could have ruined the breaks themselves...when applied breaks due cause heat....and with any substance on them they will smoke and smelll....get some good break cleaner and spray the pads and drum and re-assemble and see what happens....as for the awkward breaks with the pedal or e break...the drum kinda keeps all that in place...try cleaning them...

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post #6 of 12 Old 04-21-2009, 07:27 PM Thread Starter
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I adjusted them today after i cleaned them.Still gets way to hot(Cant touch the drum) compared to the driver side(warm to touch after 10 mile trip).

Im gonna try a wheel cylinder next.

85 CJ7,Clifford equipped 258,TBI,RE4.5,35" Claws,Aussie lockers,8.8 rear.
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post #7 of 12 Old 04-22-2009, 05:12 AM
incynr8
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if you swap the upper springs and put the primary shoe spring on first (after adjuster cable ring of course), then follow it by the secondary shoe, you should get more spring clearance to the wheel cylinder. I noticed this when doing my brakes recently and found reference to it in the Jeep Rebuilder's guide. This MIGHT serve to increase your return spring action on the primary shoe.
I would also check the ebrake transfer bar and spring to make sure the primary shoe is seating in the notch. Finally, it's possible to have the shoes hang on the backing plate, where the inside edges tilt in a bit toward the plate and you have to pull on them to get them to snap into the proper seat on the tiny greased flats on the backing plate, but that's probably not your issue.
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post #8 of 12 Old 04-22-2009, 06:03 AM
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Is the parking brake cable sticking on that wheel???
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post #9 of 12 Old 04-22-2009, 06:11 AM
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Quote:
Originally Posted by CJ7Rubicon View Post
I adjusted them today after i cleaned them.Still gets way to hot(Cant touch the drum) compared to the driver side(warm to touch after 10 mile trip).

Im gonna try a wheel cylinder next.

Make sure that this bar is seated properly. Looks like it may not be.
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post #10 of 12 Old 04-22-2009, 07:18 AM
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I think I see your problem, you have drum brakes. You might want to consider converting to rear disc brakes.

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post #11 of 12 Old 06-28-2009, 07:10 PM Thread Starter
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Quote:
Originally Posted by SWAcapt View Post
I think I see your problem, you have drum brakes. You might want to consider converting to rear disc brakes.
It was the wheel bearing seizing.The installer shimmed it too tight trying to get rid of the seal leak.

I have an 8.8 now installed with disk brakes.

Thanks for the suggestions.

85 CJ7,Clifford equipped 258,TBI,RE4.5,35" Claws,Aussie lockers,8.8 rear.
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post #12 of 12 Old 06-29-2009, 12:41 PM
bblust77
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This is the same problem I had. I am know changing all of my bearings and seals which is not fun at all. I wish I had the money to swap out rear ends for disc brakes cause the conversion kit is $$$$$$$$.
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