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General Discussion
Improve Hydroboost Brakes
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<blockquote data-quote="JEEPKEVIN" data-source="post: 1573967" data-attributes="member: 13136"><p>Funny follow up to this whole brake saga. When I swapped to the 1/2 ton master, brakes were pretty good for a long time until one trip when the peddle went to the floor. After disassembly of the master, I found one of the piston seals to be the wrong size, it was floating in its groove vs the other 3 that were held in place. I guess it was just assembled wrong and finally allowed fluid to bypass creating air in the system. Oreillys would not warranty so I just bought another.</p><p></p><p>I put everything back together and had a terrible time trying to bleed the brakes but all seemed ok. I went out wheeling the other day and the rear brakes started dragging, to the point that the buggy struggled to roll, could smell the brakes. I spaced out the master from the booster, I double checked my peddle had free play, I replaced my rear proportioning valve, nothing mattered. </p><p></p><p>Come to find out, 2005 was a change over year for Chevy and the half ton trucks were switching from disk back to drum brakes. This new master has a rear 10psi pressure valve under the seat of the rear brake output. I quick removal and brakes all better.</p></blockquote><p></p>
[QUOTE="JEEPKEVIN, post: 1573967, member: 13136"] Funny follow up to this whole brake saga. When I swapped to the 1/2 ton master, brakes were pretty good for a long time until one trip when the peddle went to the floor. After disassembly of the master, I found one of the piston seals to be the wrong size, it was floating in its groove vs the other 3 that were held in place. I guess it was just assembled wrong and finally allowed fluid to bypass creating air in the system. Oreillys would not warranty so I just bought another. I put everything back together and had a terrible time trying to bleed the brakes but all seemed ok. I went out wheeling the other day and the rear brakes started dragging, to the point that the buggy struggled to roll, could smell the brakes. I spaced out the master from the booster, I double checked my peddle had free play, I replaced my rear proportioning valve, nothing mattered. Come to find out, 2005 was a change over year for Chevy and the half ton trucks were switching from disk back to drum brakes. This new master has a rear 10psi pressure valve under the seat of the rear brake output. I quick removal and brakes all better. [/QUOTE]
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