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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: jarhead76 on October 21, 2013, 07:32:04 pm

Title: rear drum locking up
Post by: jarhead76 on October 21, 2013, 07:32:04 pm
the passenger side rear drum is locking up when the truck sit for a descent amount of time (at work or over night) with the parking break set.  i rebuilt the drums in late Auguste and this did not start till about 2-3 weeks ago. its not every time but is definitely becoming more frequent. i opened it up and everything looked fine. any ideas on where to begin to fined the problem.
Title: Re: rear drum locking up
Post by: DnStClr on October 23, 2013, 12:53:46 am
Could the adjuster be set too tight? That would be the simplest thing to check.
Title: Re: rear drum locking up
Post by: jarhead76 on October 23, 2013, 09:20:29 pm
the drum breaks are self adjusting and i was bale to pull the drum off. i think the cylinders need to be replaced. or the parking break cable is damaged.
Title: Re: rear drum locking up
Post by: 454Man on October 23, 2013, 09:51:55 pm
Maybe you have air I'm the line. That's usually the cause. Hope this helps.

What's under the hood??? If you have to ask maybe we shouldn't race...

Title: Re: rear drum locking up
Post by: Irish_Alley on October 23, 2013, 11:57:57 pm
sound just like a sticking parking brake. i dont know a fix but i would try to find where its sticking idk maybe springs???
Title: Re: rear drum locking up
Post by: jarhead76 on October 24, 2013, 06:47:23 pm
its only the passenger side and will unlock is i back up about a foot.
Title: Re: rear drum locking up
Post by: CanadianC10 on October 24, 2013, 07:11:59 pm
Wheel cylinders have nothing to do with it, nor do the lines it is a mechanical cable break , there are 3 cables on the truck, I'd say the passenger side cable is seizing up
Title: Re: rear drum locking up
Post by: Irish_Alley on October 24, 2013, 10:49:35 pm
Wheel cylinders have nothing to do with it, nor do the lines it is a mechanical cable break , there are 3 cables on the truck, I'd say the passenger side cable is seizing up
we're on the same page ;-)
Title: Re: rear drum locking up
Post by: jarhead76 on October 28, 2013, 06:13:53 pm
well i fixed it the exhaust bracket broke and was pushing down of the break cable not allowing it to fully release.
Title: Re: rear drum locking up
Post by: Irish_Alley on October 29, 2013, 11:21:08 pm
lol something simple.