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Old August 3rd, 2009, 11:25 AM   #1
Hacksaw
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Brake smokin'

So, I put new pads/rotors on the rear of my Denali the other night. I only test drove it up and down my street to make sure that its working. Well, I stop at a stop light today after getting off the freeway on my morning commute and there was smoke billowing (not a little bit, either) out of the wheel wells. It's doing it on both sides of the truck and the wheels are hot enough that you cannot touch them.

Any ideas? I thought caliper sticking, but it's weird that it would be both sides.

All parts were cleaned thoroughly before installation... never seen smoke like this off of brakes outside of a panic stopping big rig.
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Old August 3rd, 2009, 11:28 AM   #2
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Is it the little parking brake drum on the inside of the rotor? Seems like I had this problem on my 99 Sierra when I did rotors. I'm trying to remember what I did wrong....
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Old August 3rd, 2009, 11:29 AM   #3
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The parking brake is a small shoe on the inside of the rotor. I just swapped mine out.
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Old August 3rd, 2009, 11:42 AM   #4
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The parking brake is a small shoe on the inside of the rotor. I just swapped mine out.
Yeah, that's the one I was talking about. I can't remember what I did to mine. I put it together and it was hanging a bit.
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Old August 3rd, 2009, 11:44 AM   #5
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i think there is only a parking brake on one side on a denali. i could be wrong though. he said it was smoking on both sides.
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Old August 3rd, 2009, 12:35 PM   #6
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pads might be a little too thick. hit them with a belt sander and put them back in. did that with my s10 once (D44 axle) and worked great.

my brakes smoked on my d-max (one rear at a time), but that was because the calipers got bad and started sticking bad.
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Old August 3rd, 2009, 12:53 PM   #7
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what brand and type of pads did you use? alot of new pads i've put on vehicles have smoked for a few stops till they break in. had a few people come back complaining and i thought something was wrong but it was just the pads being new.
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Old August 3rd, 2009, 02:18 PM   #8
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Quote:
Originally Posted by Kodiak450r View Post
what brand and type of pads did you use? alot of new pads i've put on vehicles have smoked for a few stops till they break in. had a few people come back complaining and i thought something was wrong but it was just the pads being new.
They're Bendix semi-metallic pads.

I'm familiar with the first couple stops smoking.. this was after about 10 miles of freeway and about 2 miles of city driving, with quite a few pretty hard stops on the freeway (I drive like an idiot) and prolly 10 stop lights in town.

I'm not about to grind down the pads with a belt sander, little to ghetto for me.

It's not the parking brake, I looked, it is definitely coming off the pads.
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Old August 3rd, 2009, 02:21 PM   #9
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I'm sure you did, but the slides were lubed properly etc? Those trucks are famous for calipers sticking and hanging up...
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Old August 3rd, 2009, 02:38 PM   #10
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Slides lubed?
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Old August 3rd, 2009, 03:27 PM   #11
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i think he means the pins that bolt the calipers down. did you clean and grease them? i've pulled brakes off the 99- and newer trucks and the pins usually rust enough to cause sticking calipers. a wire wheel and some brake caliper grease usually fix that problem.
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Old August 3rd, 2009, 03:41 PM   #12
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Sounds like the sliders are not sliding. Those are the pins in the caliper that the mounting bolt goes throught. This should slide freely.
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Old August 3rd, 2009, 03:43 PM   #13
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Quote:
Originally Posted by HackSaw View Post
Slides lubed?
yup that's it right there prolly need new calipers now
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Old August 3rd, 2009, 04:01 PM   #14
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Sounds like the sliders are not sliding. Those are the pins in the caliper that the mounting bolt goes throught. This should slide freely.
This is what I am referring too... Pull it back apart and take a look. If the inboard pad(piston side) is worn or glazed and the outer looks better then the caliper is not moving properly.
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Old August 3rd, 2009, 04:12 PM   #15
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Quote:
Originally Posted by HackSaw View Post
Slides lubed?


x10



Same thing happened to my camaro. I changed the pads, didnt grease the slides, then on the test drive I got a big smell and lots of heat to the point where I couldnt touch my wheels. I had to torch the calipers to get the slides out.
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Old August 3rd, 2009, 10:56 PM   #16
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Are they dual piston calipers? If so, did you compress both pistons at the same time?

First brake job I did had dual piston calipers, I wasnt aware that you are supposed to compress both pistons at the same time, and they ended up smoking like you describe.
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Old August 4th, 2009, 07:22 AM   #17
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Quote:
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Slides lubed?
The shop i work at we always lube the caliper pins and where the pads sit on the caliper bracket!!
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Old August 4th, 2009, 09:51 AM   #18
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The cunts at the parts store gave me the wrong pads, its fixed now, no smoke. I made them give me new rotors too since they got summerballsac hot and probably warped.

Nice try, and yes, I always use plenty of lube where the calipers slide.

I was thinking you meant to lube the piston.. I was a little confused on that one.
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Old August 4th, 2009, 09:54 AM   #19
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Quote:
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The cunts at the parts store gave me the wrong pads, its fixed now, no smoke. I made them give me new rotors too since they got summerballsac hot and probably warped.

Nice try, and yes, I always use plenty of lube where the calipers slide.

I was thinking you meant to lube the piston.. I was a little confused on that one.
I bet you ordered the wrong pads
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Old August 4th, 2009, 12:36 PM   #20
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I bet you ordered the wrong pads
His mind is turning to beef brisket.
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