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Thread: Dragging brakes
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dhood
Hauling
Posts: 134
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posted July 13, 2010 04:09 PM |
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Dragging brakes
I am stumped on this one. One pad melted and warped and another the lining craked off before I figured out front brakes were dragging a little. I've been having problems off and on, I'd fix it and a few months later problem comes up again. Anyhow, anyone ever have a problem with the pressure equalizer going bad? I'm using a pressure bleeder but not getting anything through to the right front. Rebuilt the master a few years ago, just redid the calipers and new hoses. I can only guess the drag is from a clog somewhere since its affecting both fronts. Any other cause for drag? I'm getting cobwebs in the cab already.
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Klaus42
Rotorhead
Posts: 1877
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posted July 14, 2010 07:41 AM |
 Edited By: Klaus42 on 14 Jul 2010 07:41 |
The truck sitting can cause the brakes to drag, but if you can't get fluid through, you must have a clog or a bad/misinstalled part. Brake fluid is a solvent... right up until it's so old that it's not.
Of course, the hydraulics don't need to be involved for there to be a mechanical hangup...
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TimPA136
Redlining
Posts: 325
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posted December 11, 2010 04:45 PM |
Edited By: TimPA136 on 11 Dec 2010 16:47
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dragging brakes
Whats the good word on the brakes?
My guess is the master cylinder if the calipers are OK.
Be doubly sure you have free play at the pedel/pushrod.
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mattraver
Revvin Up
Posts: 95
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posted December 11, 2010 11:33 PM |
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try disconnecting all the hard linesin the front and blowing them out with compressed air or make new hard lines. how did the bores look in the caliper ?
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inboost
Newbie
Posts: 10
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posted December 13, 2010 07:56 PM |
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This is likely the rubber lines between the caliper and the body side hard line. Over time they can 'swell shut' allowing fluid to pass in one direction (towards the caliper) but not back in the other direction. Saw this happen on a few first gen RX-7 back in the 90's after they had been sitting for some time.
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