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Mod | | | Forums66 Topics128,051 Posts1,055,714 Members48,426 | | Most Online14,466
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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#34003 04/17/2005 5:53 PM | Joined: Jul 2004 Posts: 18 Junior Member | | Junior Member Joined: Jul 2004 Posts: 18 | I have a 41 1/2 ton rebuilt master and new wheel cylinders new brake lines. the brake peddle is getting harder and harder to the point that it starts to drag the breaks and activates the hydrolic brake switch. Thanks in advance for any suggestions.
41 1/2 ton
don't force it get a bigger hammer
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#34004 04/17/2005 10:57 PM | Joined: Sep 2004 Posts: 235 Shop Shark | | Shop Shark Joined: Sep 2004 Posts: 235 | Did you replace all the rubber lines? Could be the master is not letting the fluid to return. | | |
#34005 04/17/2005 10:57 PM | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | I had a similar problem that was caused by the MC plunger not coming out far enough to expose a pressure relief opening. I backed my plunger out 1/6 of a turn and the problem was solved. I was amazed that only 1/6 of a turn could make that difference.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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#34006 04/17/2005 11:00 PM | Joined: Sep 2004 Posts: 235 Shop Shark | | Shop Shark Joined: Sep 2004 Posts: 235 | Sounds like Wally has the right idea. I did not think of that. | | |
#34007 04/18/2005 12:39 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | You don't have enough pedal free play to compensate for the heat expansion. Does the brakes go back to feeling normal when the truck has sat for a long while?
Scott | | |
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