You should put some lubricant on the piston/cylinder. But not any
lubricant. There's a special formulation just for use in brakes. It comes
with rebuild kits.
I've been told it's no use cleaning up and rebuilding slaves and master
cylinders. Mine were gunked up and pitted. Been using the brakes and clutch
fine for the last six months since the cleanup. I think the lubricant
helped!
As Phil mentioned, check the hydraulics (hose etc.) for a blockage. I'm thinking
maybe you have a bad valve in your master cylinder. The relief valve is spring
loaded so it keeps pressure on the fluid when you press on the brake pedal, but
opens access to a hole that lets the fluid drain through when you let off the
brake pedal. You may have sediment in the master cylinder that is blocking the
action of this spring loaded valve.
Fred - So.SF
BADROC
_________________________ Reply Separator ___________________________
>Subject: Brake caliper question...
>Author: Ken Pearce <kpearce@madison.engr.ukans.edu>
>Date: 5/13/99 10:33 AM
>
>I've had a problem with my brakes not releasing when I let off the brake
>pedal. Needless to say, this has an adverse affect on my acceleration and
>gas mileage!
>
>When this occurs, the brake pedal is very firm and won't depress. If I
>press on it hard and pump it several times, it usually releases and the
>brakes work again.
>
>I took apart my calipers lastnight and found them to be badly pitted. I
>used some fine sandpaper to try and smooth the inner surfaces... It
>helped. Two questions:
>
> 1.) When I reassemble the caliper, should I put any sort of
> lubricant on the piston/cylinder?
>
> 2.) For those of you who sell new parts, how much for a set of
> new calipers and how fast can you get them to Kansas?
>
>Thanks,
>
>Ken Pearce, 68-2000
>Lawrence, KS
>
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