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| | | | Joined: Oct 2011 Posts: 15 New Guy | | New Guy Joined: Oct 2011 Posts: 15 | Took my 52 chev PU out of storage and after a mile or two the brakes stayed on, the peddle was all the way up and could not be depressed. After letting the truck sit for an hour or so the brakes released but the peddle had very little travel and after using the brakes a few times the brakes stayed on again. Is this an issue with eh Master cylinder? Should I replace the master cyl? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | more likely bad rubber hose[s] if they haven't been replaced recently, they soften and delaminate inside and wind up closing so the fluid can't return - master cyl investigation if hoses don't fix it
Bill | | | | | Joined: Feb 2004 Posts: 29,819 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,819 | Check the adjustment of the pedal linkage. If it's not letting the master cylinder piston retract far enough to release the pressure in the brake lines the brakes will lock up after a few applications and stay that way for an hour or two. Sound familiar? The fix is to shorten the threaded adjustment between the pedal linkage and the master cylinder pushrod to let the piston retract past the relief port every time you take your foot off the brake pedal.
Jerry
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| | | | | Joined: Oct 2012 Posts: 233 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 233 | When you adjusted the brakes how many "clicks" did you back them off? If they are to TIGHT they will expand and drag. Hope this helps.
1953 Chevy 3100 261 and SM420 53Chevy 31001953 Mack Firetruck 1972 Porsche 911 1986 Honda Goldwing
| | | | | Joined: Mar 2013 Posts: 165 Shop Shark | | Shop Shark Joined: Mar 2013 Posts: 165 | I just had the same thing happen. I had to adjust at master cylinder, once you find the sweet spot on it a little adjustment goes a long way so take your time and make small moves until you get the peddle were you need it. Then i readjusted the back pads to be a bit looser on adjustment and tweaked the parking breaks alls good now.
| | | | | Joined: May 2004 Posts: 1,312 'Bolter | | 'Bolter Joined: May 2004 Posts: 1,312 | Might also want to consider there may be water accumulation in the brake fluid. When was last time you flushed system. Brake fluid attracts water. More than 3 % water can cause problems. | | |
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