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Park brake


Hug

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Posted

I have a 2004 GMC Sierra, regular cab, short box, V-6, 5 speed, 2wd, 154,000 miles.  I replaced the park brake shoes when I did the rear pads, but the pedal still goes to the floor, with no holding.  The nut on the stud/cable at the "Y" is all the way up.  Am I missing another location for an adjustment?  

Posted

Is the cable attached to the pedal inside the truck? I’d make sure all the hardware for the shoes is installed correctly.

 

 

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Posted

You can cheat and shim that nut up with another larger nut, and a few washers - will give you an extra 1/4" to 1/2" of adjustment, depending on how thick the nut you use is.

 

I'd check everything out first - shouldn't be that loose with new parts ...

Posted

A good idea to shim the nut. 

Everything else is right. 

Posted

There is a small star wheel inside that pushes the shoe out a little.  I did each side about 3/16" and then readjusted the cable at the 'y'. 

I've been retired too long. 

Posted

Ahh, I assumed you'd already done that, since you were in there. Guess it's true what they say about assumptions ... :lol:

 

Glad you got it straightened out. :thumbs:

Posted

We're supposed to use a giant caliper and measure the inside diameter of the hat and adjust the shoes so they are .6604mm less in size.  

Posted

I just adjust them until there's a very slight drag, then go up the road at about 40 and apply the brake a few times for a couple seconds at a time. Seems to work pretty good.

Posted

Thanks,

I thought the difference in material on the shoe would take up the 'slack'.   {Assume}  So, I ignored the star wheel at first.  I adjusted them to get a slight drag, then adjusted the cable accordingly.  Ta da. 

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