Discussion Forum - Northstar Chevelle Club

Do you have stock style rubber hoses? If so, its possible that the rubber may be soft or acts as a sort of check valve and holds pressure for a second as the other wheels release as they should. Maybe a situation where the rubber decompresses when hydraulic pressure releases.

Master cylinders and proportioning valves dont have individual control over each wheel so that rules that out. Your pulling to one side is likely due to one wheel (most likely fronts as they do 80% of the breaking) is locking up when it shouldnt or not releasing when it should. Since your pulling when you let off the brake, that says one wheel or one side is not releasing the brakes right away.

I would raise the vehicle up off all four wheels and get a partner to push the pedal while you turn each wheel. When telling guy inside to release the pedal, spin the wheel and see if the wheel releases right that second or delays before the wheel is released.

I would also pull off the calipers, compress the pistons in and see if you can slide each caliper to make sure they are floating and not stuck in place or are not moving back and fourth freely. You also will find out when moving the piston back in, if the piston itself is free and able to move inside the bore as well.

MAKE SURE THOUGH, your master cylinder isnt full up to the rim with fluid or when you move the piston back in, fluid will end up overflowing in the reservior and you will have a mess to clean up. This is why I also tell guys to never top off the fluid in your master cylinder. If the fluid is getting low, thats because your pads are wearing like they should. Most people that top off flud end up with a mess when it comes time to change thier front pads because you have to push the piston back in the caliper in order to get a new set of pads on. Which overflows the reservior. As long as you remember to remove fluid in the master cylinder, your fine, most forget they added fluid months before the brake pads actually wear out and a mess is made. Its better to just leave the fluid in the master alone.

In the end, if you have a hard right side pull when coming off the brake pedal. I would consider checking the left front caliper first to see why there is a possible delay of it staying on when the rest of the brakes on the other 3 wheels have released as they should. If that checks out, I would also check the right rear as well.

Do you have 4 wheel discs or Disc/drum? I never looked at that today.

Piston is sticking in the caliper.

Check it first and make sure its not something you can free up yourself. It might be something as simple as lubricating the slides. Especially when these cars sit for half the year.

4-door Chevelle wrote:

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I have experienced that issue on my motorcycles. I just pop the piston out of the caliper to clean the crud out from under the o-ring and problem solved for zero dollars and zero cents.

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Yep a caliper kit is only a few bucks but if you don't know how to do it, the loaded rebuilts are fast and easy.