Thread: Brake problems

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Originally Posted by bobscogin

Make sure there's sufficient clearance between the pedal push rod and master cylinder piston when the pedal is at rest. The piston may not be coming back far enough to vent the port back to the reservoir.

Bob

Bob
How much clearence should you have. I have a disc./ drum set up and a very low pedal. I've bled them and adjusted the rears and it's still low. My pedal push rod is pretty tight, in fact I had to pry it a little to get the bolt through. The rod is adjusted all the way in, so do I need to shorten the rod a 1/4 inch or so. Sorry to Hi- Jack this thread, but thought I could jump in and get some help.

Thanks Don (oldschool66)

Shouldn't need a lot of clearance-maybe 1/16" to 1/8". If you had to pry on it to get the through bolt in, your pre-loading the master cylinder piston and that's not good. Shorten it 1/4", as you suggested, and then use the adjusting clevis to get the clearance correct.

Bob

Originally Posted by bobscogin

Shouldn't need a lot of clearance-maybe 1/16" to 1/8". If you had to pry on it to get the through bolt in, your pre-loading the master cylinder piston and that's not good. Shorten it 1/4", as you suggested, and then use the adjusting clevis to get the clearance correct.

Bob

Thanks Bob, I will be back at it tonight! What a great board this is, nice straight answers with no sarcasim when you need advice, this may take some getting used to, after building 6 hot rods I'm still finding things I have not come across before!