1985 gmc 1/2 ton 4x4

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ymmas - 15 Jun 2007 15:41 GMT

hello, new here so if i make any bo bos let me know, my son &i have
just finished his latest toy, new 383, new transfer case and a new
700r4 , new 4:11 with the back locked up everything went find then we
started on the brakes, rebuilt calipers& rotors and pads, everything
on the rear axle save the backing plate is NEW/not rebuilt, driver
side rear locks up BAD after about 3 blocks, pulled it down to the
backing plate,everything looks great, would a blocked brake line cause
this?, went trough emergency brake , no problem there help
ymmas

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Mike Romain - 15 Jun 2007 17:14 GMT

> hello, new here so if i make any bo bos let me know, my son &i have
> just finished his latest toy, new 383, new transfer case and a new
[quoted text clipped - 5 lines]
> this?, went trough emergency brake , no problem there help
> ymmas

Hmm....

A blockage can cause a brake to stay on, but it is usually a 'rubber'
line that fails for that and if the rear flex hose failed, both back
brakes would be locked on. (unless one side was just out of adjustment
compared to the other side?) Were they hand adjusted?

Maybe it's a bad wheel cylinder with a burr inside or something?

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
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dahpater - 15 Jun 2007 19:07 GMT

How do you get it to release? If it was a line/hose problem, it will
not release untill you releive presure. ie: opening a line/bleeder
screw.

Make sure it's not adjusted to tight. Make sure the return springs are
in there proper place. Make sure the shoe with the shorter brake
lining is mounted towards the front of the truck.

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