Re: [MV] XM-211 brake problem. Grabs. Won't let go, quickly.

From: Joe Shannon (fordpart@BELLSOUTH.NET)
Date: Mon Jan 15 2001 - 06:05:04 PST


If you have replaced the master cylinder or put a kit in it There is a check
valve that might be in the end of it that is not used on this truck but is
used on a M-35

JJ&A wrote:

> Hi, all.
> I have a XM-211 and it has a brake problem. I hope someone
> knowledgeable can suggest the common fix. Here are the symptoms:
> While driving, if you gently step on the brake, it starts to gently
> slow down. As it slows down, it starts to grab, and then locks up the
> brakes. It won't release the brakes for several seconds, which it does
> gradually, like leaking air pressure is involved. Then it is completely
> freed up. All 12 cylinders have been rebuilt, and the previous owner was
> inside the airpack. Brake return springs are new.
> It has lots of stopping power, but just won't release quickly, once
> it starts to take hold. Any ideas? Many thanks. Jim
>
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