Trailer brakes on the left front Axle keeps locking up and putting flat spots on the tires replaced the s cam and bushings,new brakes and drums slack adjuster,abs valve and brake chamber but still locking up when you have to make a sudden stop. Any ideas what it can be?
1 Trailer brake locking up
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by homesick, Oct 4, 2021.
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Suspension issue not allowing adequate weight onto that corner?
Big Road Skateboard Thanks this. -
Flatbed with not much weight? Like @AModelCat said. For some reason you've got no traction there.
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I forgot to mention it's a 53 dry van
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Greese/oil? Broken gear?
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1. When replacing the slack adjuster and chamber, mechanic didnt set slack adjuster to correct length
2. The way the slack adjuster mounts is messed up and allows too much flex/is hanging -
Our stepdeck trailer did that. Had a brake job done both sides for front axle of a tridem.
Thought the brakes needed breaking in but it kept doing it. Locking up, sliding tires.
I backed off the slack adjuster a bit more to allow more room for breaking in.
Still does it. I checked the other 2 axles brakes as well. They appeared fine, had lining and working fine but more likely glazed and not braking enough so I replaced all of the pads and drums. The front axle was working harder than the other two.
Trailer has been fine since. -
I replaced all the brakes and drums still locking up
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My RGN does this at times if I set the ride height to manual and don't have the same setting on all 3 axles.....id say you have a suspension issue.
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