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| | | | Joined: Apr 2008 Posts: 127 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 127 | After driving a few miles, all 4 wheels lock up. Have bled brakes several times, and changed wheel cylinders. No help. Any ideas out there? 1946 Chevy pickup, 1/2 ton.. | | | | | Joined: Sep 2015 Posts: 157 'Bolter | | 'Bolter Joined: Sep 2015 Posts: 157 | Don’t know what your running for a master cylinder or brake pedal mechanism but I saw a similar problem on my friends 65 C10. The PO of the truck changed it from a stick transmission to an automatic, he also changed the brake pedal mechanism to a single pedal. The push rod for the master cylinder wasn’t adjusted correctly and when the engine compartment and firewall mounted master cylinder warmed up, the push rod would apply the brakes. Once it cooled off, everything went back to normal. We adjusted the push rod so it had an 1/8” gap between the end of the rod and the master cylinder plunger and it’s worked fine since. Hope this helps.
Dan
35 CC Case
38 Chevy Pickup
51 3100 AD
58 3100 Apache Fleetside
| | | | | Joined: Sep 2010 Posts: 2,306 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 2,306 | After the brakes lock up what happens ,do they release after time . Could be the master cylinder or proportion valve not letting the fluid back .I had this on a old car but only on the front left wheel turned out to be a rubber flex hose you could push the brake and the hose was not letting the fluid back . | | |
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