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| Re: Dragging rear brakes |
Subject: Re: Dragging rear brakes
by ddgonzal on 2016/1/29 7:18:59
Dragging rear brakes has two possible causes:
* Hydraulic problems
* Mechanical problems
The usual hydro problem is the Residual Valve thing in the disc/drum master cylinder.
Less often:
* brake lines next to the exhaust system
* collapsed flex hose
* sticking Master Cylinder piston (not returning fully)
* Master Cylinder over-full
* Proportioning valve sticking
* Master Cylinder free-play incorrectly adjusted
* Brake Booster push-rod incorrectly adjusted
Mechanical problems include:
* parking brake adjusted incorrectly, even with no cable hooked up this can cause dragging
* Caliper piston sticking
* Caliper sliding surfaces binding
* Bent or misaligned caliper or caliper bracket
* Dry wheel bearings
R31 rear disc parking brake adjuster
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