if there is no fluild leaking from any wheres i would gander a guess is that
your master cylinder isnt holding its pressure. time for a rebuild.
Bruce
1949 chev 1/2 ton
Hollis Troop12 wrote:
> This is try 92 to get a message to post - I am now trying our local boy
> scout hotmail account - hope this one works.....
>
> sorry list!
>
> I have a 46 1/2 ton. I have rebuilt all of the wheel cylinders and the
> master cylinder. The truck was on jacks stands and mostly level. Well I
> was able to bleed the lines using a one man bleed kit. It has a magnet and
> the draining bottle sticks to the wheel well above the cylinder. It seem to
> worked - took out all of the black fluid and once it started running clear
> with no air I turned off the bleeder valve and replaced the screw. Off to
> the next wheel - all of them with the same result.
>
> However, I can not sustain any pressure on the break pedal. I can pump it
> up (8 - 10 times) and it will be firm for the bottom 1/3 of the press to the
> floor. After 30 seconds this pressure is loss as well. I have placed the
> wheels back on the truck and moved it to a very level spot. There is no
> leakage of break fluid form anywhere I can detect. I will try to re-bleed
> the wheel cylinders again.
>
> Any suggestions?
>
> Second issue. I have purchased new break shoes and placed them on the
> truck. To start with I have turned the wheel cylinder/pad attachment screws
> all the way in. The rear wheels still drag on one spot in each revolution.
> I know I need to get the drums turned. If this will not take care of the
> drag what should I do? I purchased the break shoes from Carter and they
> assured me they were the correct size. I have matched them up with the old
> shoes and the look to be the same to me. Any hints would be appreciated.
>
> Thanks
>
> Jim House
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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