Re: Front brakes lock up

For heaven's sake, don't drive it like this. It's hard to diagnose without knowing what Jeep you have, but it sure sounds like the system is holding residual pressure in the front lines. It could be the wrong MC if there was one available for drum fronts. Drum systems hold residual pressure, disks don't.

Hi,
>
> I had my Jeep worked on by a rape artist... ok, a jeep whiz, and he replaced
> the master cylinder because it was full of dirt, etc. This was after he
> rebuilt the rear end. I usually work on it myself, but I didn't have the
> tools for the rear end job.
>
> He bled the rear brakes after replacing the wheel cylinders, which were
> bad... I know that myself. I found out that he didn't bleed the front
> brakes, cause he broke off the bleed screw and said the hell with it I
> guess. Anyway, when I picked up the Jeep, the brake pedal was setting about
> 4" higher to my foot than before, and travel was about 1.5".
>
> The next day I was driving it, and realized, that the front brakes were not
> releasing. I replaced the calipers cause they were badly rusted, etc., and I
> thought that disturbing the break fluid and not bleeding them caused the old
> ones to finally stick.
>
> That didn't help at all. The only way I can drive it, is to NOT snug the
> front brake line at the master cylinder, so the front brakes can bleed off
> after stopping!
>
> I know... what about the mechanic? He was closed today, and will open on
> Tuesday... I will talk to him then. But I was wondering, what is it? I think
> it is the wrong master cylinder. The equalizer block works, else loosing the
> fitting at the master cylinder wouldn't matter, right?
>
> Let me know your thoughts!
>
> J
>
>

Ahhh, that is good to know!

Could be my tenant with the exact same symptoms just got the wrong MC rather than a 'bad' rebuilt one.

Mike

"Gerald G. McGeorge" wrote:

You can often make them work by pulling the little spring & piston out of the port, then screwing the adapter back in. However this isn't something I'd advise a novice to fool with, just go get the right one installed.

This is a fairly common goof with 76-86 CJs', since the 76 had drum front's and they'll nearly all interchange on non-power assist systems.

I know that! They were replacing the back cylinders as a part of the rear end rebuild, when they made the stupid blunder. I was upset that I let them "go ahead" and replace the stupid rear cylinders while they had the rear end job at the same time. I never learn :)