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Tech Area => General Auto Tech => Topic started by: larrym on April 17 2015, 05:48:33 PM

Title: Backing plate wheel cylinder repair
Post by: larrym on April 17 2015, 05:48:33 PM: So my wheel cylinder shifted on me did a few searches and heard about a clamp or retainer but no part number. Called my local parts store and got a "huh" from them as well. Did some more digging on line Part # GMB25851 brake drum wheel cylinder bracket called the store back they had 5 sitting on the shelf.....my first call they asked if I wanted the circle retaining clip....
Title: Re: Backing plate wheel cylinder repair
Post by: earlbrown on April 18 2015, 05:27:13 AM: the hell is that?
Title: Backing plate wheel cylinder repair
Post by: larrym on April 18 2015, 09:48:31 AM: For wore out backing plates it holds the wheel cylinder in place.
Title: Re: Backing plate wheel cylinder repair
Post by: Just a Six? on April 18 2015, 10:53:26 AM: Good find I never heard of that before but if the Backing Plate is in Bad/Rusted condition wouldn't a new backing plate be in order & then maybe add that for extra insurance? It's your Brakes! :O
Title: Re: Backing plate wheel cylinder repair
Post by: Forzfed on April 18 2015, 02:00:57 PM: Quote from: larrym on April 18 2015, 09:48:31 AM
For wore out backing plates it holds the wheel cylinder in place.

The ones I used looked nothing like that.
Title: Backing plate wheel cylinder repair
Post by: larrym on April 18 2015, 04:16:24 PM: Quote from: Just a Six? on April 18 2015, 10:53:26 AM
Good find I never heard of that before but if the Backing Plate is in Bad/Rusted condition wouldn't a new backing plate be in order & then maybe add that for extra insurance? It's your Brakes! :O

My backing plate was not in bad shape other than the rotated wheel cylinder saved me pulling the axles and made it easier to install the retarded clip
Title: Re: Backing plate wheel cylinder repair
Post by: earlbrown on April 18 2015, 04:55:35 PM: Granted it will avoid pulling the axle...

But our backing plates are the same as S10s and are all over the junkyard. I'm just trying to imagine how a backing plate can wear out. It's not exactly a wear item.
Title: Backing plate wheel cylinder repair
Post by: larrym on April 18 2015, 05:29:44 PM: Either my clip was weak the casting on the wheel cylinder was shit. The new wheel cylinder fit much tighter but for the sake of drilling 2 holes I installed the retainer. Spoke to a buddy who is a wrench he says it's common on gbodys and brake boosting only makes it worse
Title: Re: Backing plate wheel cylinder repair
Post by: Just a Six? on April 18 2015, 06:35:53 PM: Quote from: Forzfed on April 18 2015, 02:00:57 PM
Quote from: larrym on April 18 2015, 09:48:31 AM
For wore out backing plates it holds the wheel cylinder in place.

The ones I used looked nothing like that.

That's because you live in Winterpeg!! :rofl:
Title: Re: Backing plate wheel cylinder repair
Post by: Just a Six? on April 18 2015, 06:37:30 PM: Quote from: larrym on April 18 2015, 05:29:44 PM
Either my clip was weak the casting on the wheel cylinder was shit. The new wheel cylinder fit much tighter but for the sake of drilling 2 holes I installed the retainer. Spoke to a buddy who is a wrench he says it's common on gbodys and brake boosting only makes it worse

I'm sure the E Brake launches don't help either!
Title: Re: Backing plate wheel cylinder repair
Post by: gusszgs on April 19 2015, 09:17:20 AM: Couldn't we just use an older "bolt in" style wheel cylinder,and just drill two holes to mount it??