Parking brakes.

DogDiesel

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Feb 8, 2012, 4:22:18 AM2/8/12

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Hello, A minor question.

2005 Chevy Silverado 1500. Rear disc brakes.

I cant figure out how the parking brakes working. I thought it was
hydraulics locking up the discs. But there's cables to the wheels. The
calipers are loose with the parking brake set. Are there pads grabbing the
hub some how.

Diesel.

Troy

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Feb 8, 2012, 6:56:31 PM2/8/12

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believe it has a small shoe, like drum brakes

Steve W.

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Feb 8, 2012, 8:22:45 PM2/8/12

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You have rear disc primary brakes with a shoe type parking brake. Under
the hat on the rotor is a one piece shoe that mounts to the backing
plate. The inside of the drum rusts and grinds the shoes into junk.
This is especially true if you only use them once in a while.

The way to repair them is to basically replace all the parts except the
backing plates, cables and actuators (if they are not rusted real bad)

this is the shoe
http://info.rockauto.com/getimage/getimage.php?imagekey=1275561&imageurl=http%3A//info.rockauto.com/Monroe/BX781.jpg

rotor should look like this
http://info.rockauto.com/getimage/getimage.php?imagekey=391020&imageurl=http%3A//info.rockauto.com/Raybestos/56827R-4.jpg

You will need to know if you have single or dual piston rear calipers.
Plus the brakes are also different if you have rear steering.

When you put it all back together make sure you adjust the shoe up so it
is almost binding when completely off. Keep in mind that even when you
get them all set up they are not real good at holding the vehicle
against the engine. You basically have a brake surface smaller than used
on an old VW Beetle holding your truck!

--
Steve W.

DogDiesel

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Feb 8, 2012, 11:30:21 PM2/8/12

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"Steve W." <csr...@NOTyahoo.com> wrote in message
news:jgv75m$b8c$1...@dont-email.me...

Thanks. I was thinking a bit too far advanced with the lock up the
calipers. Well,here in Ohio , a lot of PM has to do with rust. We don't
use the parking brake because they wont release because of rust. Especially
after about 5 years or so. At the worst moment too. Then you end up
cutting the cables and beating the drums off with the brakes locked up.
Wrecking everything. This is the first time I've seen this setup. Rotors
really rot real bad here. Mine look ok. But the parking brake works ok.
And its not grinding. I'm just gonna have to use it once in a while.

Steve W.

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Feb 8, 2012, 11:52:54 PM2/8/12

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NY has the same problem with rust.
If they are working you're doing good. Probably 50% of the ones I have
had in worked, the rest were useless.

Pretty much all the different types of P-brake have been used by GM,
Ford, Chrysler,
at one time or another. From using the original shoes or pads with
mechanical linkages to added calipers and shoes.
I HATE some of them....

--
Steve W.

DogDiesel

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Apr 1, 2012, 9:51:50 PM4/1/12

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"Steve W." <csr...@NOTyahoo.com> wrote in message

news:jgvjfn$sl1$1...@dont-email.me...

I tried my parking brake on a freeway exit. Lets just say. I'm glad I
did it once . So I know to not depend on having a real good emergency
brake.

It will stop the vehicle, but , wont lock up the rears.

You sure can tell its damn near useless.

As an emergency brake.

I gave up halfway. So I wouldn't cook them.

It feels like stopping an airliner type of deceleration, situation.

But with crap brakes.

You need a lot of room.

And there's gonna be a lot of heat.

Diesel.

Dave

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Apr 3, 2012, 9:14:50 PM4/3/12

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>
> I tried my parking brake on a freeway exit. Lets just say. I'm glad I
> did it once . So I know to not depend on having a real good emergency
> brake.
>
> It will stop the vehicle, but , wont lock up the rears.
>
> You sure can tell its damn near useless.
>
> As an emergency brake.
>

It's a parking brake, not an emergency brake. Having said that, I agree,
it's barely adequate as a parking brake.