Posted by Alan Bowes on April 07, 1999 at 13:14:04:
In Reply to: Now it's the brakes posted by David Sherman on April 06, 1999 at 18:37:13:
Good advice so far. I'll summarize and add a point or two:
- Possible MC pushrod misadjustment allowing seal to block return port.
- Possible overly-tight brake shoes that grip as they heat and expand.
- Also could be a bit of debris in the fluid that floats up and blocks the return port in the MC.
- Also could be a damaged or incorrect seal in the MC that allows part of the seal to cover the relief port.
- Also could be a MC piston that is hanging up due to corrosion, a damaged seal, or too much honing on a previous brake job (creating a "pinch" effect) that prevents the piston from retracting all the way.
Note that there are TWO adjustments for each brake shoe (4 adjustments per wheel) and a specific sequence must be followed to avoid incorrect adjustment and obtain even contact. Most people botch up this adjustment. Get the technical manual, study the geometry of the brakes, and adjust them per specs. Also check the master cylinder, which may require rebuilding and readjustment.
Alan