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Old 05-09-2010, 12:21 AM
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Tight drums/with new brakes on my 83 C-10

Ok....... I just put completely new brakes on my 83 C-10 truck, The fronts went fine.... The back brakes on the other hand , I purchased new shoes,drums,spring kit and wheel cylinders... Got everything installed and the drums won't slide over the brake shoes without lots of force, so tight that you cant even roll the truck when it's on the ground .... the self adjuster is all the way in on both sides, the brakes are tight against the top pivot point (whatever the hell it's called), but for some reason the drums are tight as hell, What could the cause be?? there are two sizes available for the wheel cylinder 1" and 15/16" could I have the incorrect wheel cylinder?? what is the measurement on a wheel cylinder reference?? Diameter or travel

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Old 05-09-2010, 04:51 AM
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Check for too much tension on the emergency brake cable.
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Old 05-09-2010, 05:30 AM
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Assuming you've already compared the old shoes to the new ones...to make sure you have the right shoes...

Are the wheels cylinders still dry? If they're completely compressed, the brake shoes would almost be touching the rubber seals on both sides of the wheel cylinder. Did you try just jiggling the brake shoes around to make sure they're not binding against the backing plate? The 1" and 15/16" refers to the inside diameter of the wheel cylinder, if I'm not mistaken.
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Old 05-09-2010, 08:00 AM
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No they are not dry, I bled them last night...
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Old 05-09-2010, 08:23 AM
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Did they sell you over sized shoes and standard drums.
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Old 05-09-2010, 08:38 AM
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Quote:
Originally Posted by ashman
for some reason the drums are tight as hell
Check that the e-brake is completely released and, if needed, adjust the cable looser. But if the shoes are touching at the top point and the adjusters are all the way in, the shoes or drums are the wrong part, it would seem.

I'd have the parts store pull another set of drums for comparison of the drum's ID. If that checks out, all that's left are the shoes...

The ID is what the 1" and 15/16" is referring to like a1ss said.

Good luck.
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Old 05-09-2010, 09:53 AM
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Loose park brake cables is good, but also make sure the park lever inside the drum is all the way back as well. Slide the old drums on - if they're very loose, it's the drums. If still tight, it's the shoes or installation. Since you can't turn the wheels, pulling the drums can be a challenge. Use a prybar through the studs to rotate the drums while working them off.
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Old 05-09-2010, 11:47 AM
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If the shoes are against the cylinder and the adjusters then the ebrake is not the issue
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Old 05-10-2010, 01:17 AM
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edited for spam

Last edited by Deuce; 05-10-2010 at 08:52 AM. Reason: Violation of guidelines. Please see: general board guidelines.
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