The Stovebolt Site Forums The Shop Area Engine Shop clutch adjustment

How to adjust the pedal height in a 60 GMC 1000, with a hydraulic clutch? Used to be good, now have to push to the floor to disengage clutch. No signs of leaking, yet. Where is the master, under the dash?

Master I believe is part of the brake master. Sure sounds like you got air or a bad master to me. Shouldn't be a need for adjustment,
Scott

i bet 48bigtrucks id right. my 62 c60 had a adjustment on the pushrod in back of master cyl but it wasn't that. it was near the floor when i got it. cleaned system, rebuilt master and slave cyl. was good as new. looked like someone had put oil in it instead of brake fluid, or it could have been just real old. good luck

I had the same trouble on a non-GM. I tried adjusting, rebuilding, and bleeding, but it was only good for a couple of days. I finally had enough and replaced the master, slave, and the lines. Problem solved.
Your truck is probably worth spending the money on.
Hope this helps.

First check the adjustment at the slave cyl. It should have about 1/2 in free play. The rod is adjustable into the clevis after you loosen the lock nut. The adjustment for the master cyl. doesnt change much. It should have just a tiny bit of play till it starts pushing on the piston. If these are correct & its still not right, its a good idea to put kits in the cyls. They are real easy to do. You can get a hone for less then $10 at the discount tool shop. These cyl bores are usually in good condition because they operate at full stroke & dont get a chance for corrosion to build up.

sorry, i said master cyl but meant slave for the adjustment.