1986 CJ-7 Dana 44 Rear Drum Brake backing plate question. - JeepForum.com
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Unread 03-01-2015, 07:57 PM   #1
CJ65
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1986 CJ7 
 
Join Date: Mar 2011
Location: Simi Valley, CA
Posts: 171
1986 CJ-7 Dana 44 Rear Drum Brake backing plate question.

I am replacing out the axle seals, rebuilding the wheel cylinders, and just trying to get all the gunk off of everything. Now, once I cleaned up the brake backing plates, I notice some heavy marring/gouging on the points that the brake shoes articulate with the backing plate.

Question 1: How does this happen?

I already have a low opinion of the PO's mechanic. So, wondering if there is a cause that a more seasoned mechanic knows about.

Question 2: Can I build these pads back up with my wire feed welder and then grind them flat and then sand smooth? Or should I just go to the junk yard and get another backing plate?









This is more than wear and tear, it is downright gouging and grooved.

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Unread 03-01-2015, 08:50 PM   #2
only in a jeep cj
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1986 CJ7 
 
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Location: Mobile, Alabama
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I can only guess that the shoe holding pins broke OR small parts/springs wedged in there. Those areas are where the edge of the shoe rest and move in and out as pressed into the curved drum surface.
IF that was mine, I would just fill them with weld and grind smooth. Those late 86 backing plates are the same as the Model 20 plates EXCEPT with a larger center hole to clear the bearing and the 4 mounting holes are a little larger. The common older ones (like from a Scout II 44 ) are 11x2 I believe instead of the 1.75 X 10 that these are....I think
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Ed

1975 CJ-6 304 T15 Dana20 30/44 3.73
1983 CJ-8 258 T5 300 30/44 3.31 Looking for full or half hardtop buy or trade
1986 CJ-7 Laredo 4.6 stroker T5 300 30/44 3.31
1986 TJ-7 Trail Jeep project in the works
2003 Inca Gold TJ Rubicon
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Unread 03-01-2015, 09:02 PM   #3
CJ65
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1986 CJ7 
 
Join Date: Mar 2011
Location: Simi Valley, CA
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Quote:
Originally Posted by only in a jeep cj View Post
I can only guess that the shoe holding pins broke OR small parts/springs wedged in there. Those areas are where the edge of the shoe rest and move in and out as pressed into the curved drum surface.
IF that was mine, I would just fill them with weld and grind smooth. Those late 86 backing plates are the same as the Model 20 plates EXCEPT with a larger center hole to clear the bearing and the 4 mounting holes are a little larger. The common older ones (like from a Scout II 44 ) are 11x2 I believe instead of the 1.75 X 10 that these are....I think
Thank you Ed, I think I will give it a go. I am not a great welder, but I can form a bead and make it stick. I am almost an ok welder, but I am a great grinder.
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Unread 03-01-2015, 09:23 PM   #4
jeep_boy02
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1980 CJ7 
 
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If that doesn't work out I have a few 20s laying out back that you could use to swap if the only thing would be enlarging those said holes.
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Unread 03-01-2015, 09:37 PM   #5
CJ65
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Quote:
Originally Posted by jeep_boy02 View Post
If that doesn't work out I have a few 20s laying out back that you could use to swap if the only thing would be enlarging those said holes.
That is quite neighborly of you JB! I think I can form a bead on this stamped dinner plate ok. If something goes awry, I will give you a jingle.
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