David,
What you describe is typical of a faulty brake flex line. Also a defective
caliper can cause this, but that is less probable being that it is new.
First off, I would recommend that you check to see that you did receive the
new parts that you paid for. If your flex line seems to be dry rotted, then
it is an old line that may be decomposing from the inside. I have never
come across a brake master failing in a manner so that would cause the
brakes to drag as you describe. Also, trace the hard metal brake line to
the tee fitting by the diff. to ensure there is no damage that could be
causing a restriction. Possibly, there is a kink in the line.
When you have the car in the air, have someone hit the brakes repeatedly,
and upon their releasing the pedal, see if there is drag on the wheel.
Lastly, bleed the brakes and see if any particulate matter comes out. There
is a good chance dirt got into the caliper or brake line during disassembly
if the tech was not careful in their work. This could cause the fluid to
release slowly causing the brake to drag.
If your rotor is blued from the heat you will want to consider replacing it
with the brake pads. That should be covered by the shop warrantee should
this be caused by carelessness on their behalf.
Regards,
Mathieu Cama
Old World Automotive
Lawrenceville, GA
www.oldworldauto.com
At 02:45 PM 6/16/2005, you wrote:
My left rear brake is dragging. I'm sure of it. I can feel the heat
coming off of it after a freeway run, and that wheel is covered with brake
dust. If I jack it up, I can feel that it's tight. The dilemma: The
brake caliper, rotor, and hoses on both rear brakes have been replaced in
the last month. In fact, the problem started when they were
replaced. I've taken it back to the shop that did the work, and they
think I'm nuts -- they say the pads are moving freely and they can't find
anything wrong. I guess I don't have much choice but to tear into it
myself. Any suggestions on what to look for when I take it apart?
---
David Brodbeck
'83 Mercedes 300D Turbo
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