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1078 Brake problem

Ned81

Active member
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185
43
Location
VA
I recently lost a wheel bearing and had to get towed to a shop. When bearing went it caused differential oil to contaminate my brake shoes. While the shop had it, I had them go ahead and service all the brakes. I’m now having a problem with one of my rear brakes, locking up during medium breaking. That same break needed a new brake chamber. The original was damaged, probably since I had the truck and I never noticed it. I’m not sure if the brake chamber has a problem or if it’s simply adjusted too tight. I had to re-adjust all the brakes because the shop didn’t get it right. I also think one of my adjusting bolts on the front is not functioning properly. when I turn the star. It doesn’t seem to move the shoe. I’m thinking the star has disconnected from the bolt itself. I’m going to talk to the shop on Monday but at this point I think I’m going to have to fix it myself.
Any thoughts on why the back brake is locking up?


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Ned81

Active member
116
185
43
Location
VA
Positive that the replacement canister is the same size as the original and all the others?
No I’m not actually. That is something I’ve been trying to figure out. It looks the same as the others. I got it from Midwest. It’s a reman they sell. My truck is a 1998 A0 so it was one of the last a0 trucks. It has “newer” chambers than the older trucks. Are there more than one version of the newer chambers?


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Lugnuts

Active member
Steel Soldiers Supporter
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Location
Myakka City, FL
Not knowing much about how you obtained your vehicle or what the maintenance record on your brakes was or is, when I get them I have found that it is best in the long run to completely disassemble all wheels, gut the cylinders, clean, grease, and make sure that stars are free and cylinders adjust. I then adjust each wheel in unison increments until close to correct on drums. This generally means the drum is on and off 3 or 4 times but it insures uniformity for me. First time the brake is applied they center to the drum.
When I get these trucks the fronts are always so out of adjustment they grab. I have found that the best way to adjust the fronts is to pull the drums and to make sure the adjuster is working, take them back to fully closed, see what my gap is compared to the front, and then cock the shoe, and manually adjust. When the drum is back on, the shoes adjusted, and the adjusters known to be free, you can go a bunch of miles knowing they are working.
Why it is grabbing on one wheel leaves me saying what are the other wheels doing and are you sure of the shop that did the work. That's not criticism but there seem to be a lot choices in the selection of what could be wrong.
Let us know what you find and how you resolve please.
 

Ronmar

Well-known member
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Location
Port angeles wa
Also confirm the shoes are on correctly. they are not symmetrical and stamped to indicate the adjuster end, and can be put on backwards... 3 of the 4 front shoes were on backwards on my truck when I received it from auction and it pulled like a SOB when brakes were applied.
 
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