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Brake issues

4.1K views 3 replies 2 participants last post by  Fairmont79  
#1 ·
Well I guess it's my turn to start having some problems. I finally got my new u-joint and diff seal repairs finished but now I'm having rear brake problems. The rear caliper isn't releasing, here's what I've tried so far. I pulled the caliper off the mount so I could access it easier, pumped the brakes and I couldn't force it to release. Next I loosened the banjo at the caliper and I could push it back with channel locks. I tightened it up again and repeated the process, once again it didn't release. Then I loosened the banjo at the master cylinder and I could push it back with the channel locks.

So based on this it seems the Master Cylinder could be my problem. Any suggestions?
 
#2 ·
Take the brake line off the caliper and allow it to gravity drain. If you have flow, flush the MC out with alcohol. Make sure the pedal and MC return when released. If it still fails to release, then a new MC is needed.
 
#3 · (Edited)
Thanks for the tip RD, I took your advice and it works. :D Went for a quick spin and it's releasing so good I don't have any brake clatter (so far). I still need to adjust the parking brake and pick up some more brake fluid so I can bleed the system, hopefully the local Bumper to Bumper has some 5.1 fluid.
 
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#4 ·
Found out about alcohol when one of my friends took his car to an instant oil change place and they put power steering fluid in the brake reservoir instead of brake fluid! What a frigging mess! We were lucky and flushed it out before any permanent damage occurred!