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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2015 Posts: 78 'Bolter | | 'Bolter Joined: Sep 2015 Posts: 78 | After installing a new master cylinder / power booster my brakes worked great but will nearly lock up when when driving stop and go. My pedal is up and all 4 wheels are tight. I have to either readjust the push rod or wait for the pedal to go back to normal. Problem seems to be with the master cylinder. Disconnecting the vacuum doesn't help. This is an all drum application with no proportioning value needed. Perplexed. | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | It sounds like the MC pistons are not returning properly. Can you give it more free play? | | | | | Joined: Sep 2015 Posts: 78 'Bolter | | 'Bolter Joined: Sep 2015 Posts: 78 | I can adjust the push rod to make it shorter. However, the pedal will be down near the toe board when it engages the brake. | | |
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