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Brake Rotor Problem

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Old Apr 12, 2011 | 08:22 AM
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Brake Rotor Problem

On my way home last night I had to hit the brakes kind of hard and felt the truck "jumping" a bit, felt like a brake problem.

I pulled all the wheels off and checked the rotors, the outside of the front passenger side rotor has some "dips/grooves" in it.

There are only 20k miles on these PowerSlot rotors with the Night Hawk pads (I think thats the correct names)

The only thing that has changed in the past 5k miles is new tires.

I dont feel the "jumping" when applying the brakes lightly.

What do I do? Are the rotors warranted? If not I need to get them cut and sand the brake pad right? But will that fix the problem? Could the pad be defective?
 

Last edited by DemonRace6; Apr 12, 2011 at 08:24 AM. Reason: Spelling Error
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Old Apr 12, 2011 | 08:45 AM
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Have any pictures?

Seems like maybe a guide pin problem, that was keeping brake pressure applied.
 
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Old Apr 12, 2011 | 08:53 AM
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I had an issue with one of my front rotors last year. I cannot remember the warranty period from when I asked but I do remember it was rediculously short. Like 30 days or something silly like that. I did have mine turned and it has been fine since.
 
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Old Apr 12, 2011 | 09:34 AM
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Plenty of meat still on the pad that is causing the problem:

Hard to see but the lines are gooves:


 
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Old Apr 12, 2011 | 10:24 AM
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Originally Posted by woodnthings
Have any pictures?

Seems like maybe a guide pin problem, that was keeping brake pressure applied.
Thats what I was thinking, the pins were stuck bad when I changed them out, but I put new pins in and everything seemed to work smooth.

On the driverside however I replaced the whole caliper b/c the pins were stuck too bad. I should have just replaced bothe calipers. It was only like $60 for the caliper.

Originally Posted by DieselCamper01
I had an issue with one of my front rotors last year. I cannot remember the warranty period from when I asked but I do remember it was rediculously short. Like 30 days or something silly like that. I did have mine turned and it has been fine since.
That stinks that the warranty is that short, but understandable. If its the pins its my fault, I'll get it turned down, replace the caliper and sand the one pad. Hopefully that will do it.

Anyone ever sand a pad flat? How would I do that?
 
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Old Apr 12, 2011 | 11:39 AM
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Just talked to Pep Boys, $13 to cut my rotor, can do it at 6pm tonight, and they have a new caliper in stock.

Just need to figure out what to do with my pad...
 
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Old Apr 12, 2011 | 01:24 PM
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Are those the cryo'ed rotors? If so does Pep Boys know that? That's pretty inexpensive.
 
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Old Apr 12, 2011 | 01:31 PM
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Rub the pad on some flat concrete to knock the ridges off.
 
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Old Apr 12, 2011 | 02:30 PM
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Originally Posted by DieselCamper01
Are those the cryo'ed rotors? If so does Pep Boys know that? That's pretty inexpensive.
No I didnt tell them that, I didnt know that made a difference. I guess I should call them back? Will they know what the cryo'ed rotors are?

Originally Posted by cj45lc
Rub the pad on some flat concrete to knock the ridges off.
Really???
 
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Old Apr 13, 2011 | 11:33 AM
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Pep Boys couldn't cut it. Very annoying that they told me they could. I bought a new caliber, replaced the pins and cleaned the slots for the pins really well. The one pin with the rubber washer was really stuck in there. Maybe that was the whole problem?

I sanded the pad a bit, it only took a min to get it very smooth again. Put it back together and drove today, still shaking when I hit the brakes hard. Who can cut these Rotors?
 
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Old Apr 13, 2011 | 01:46 PM
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I had to have a mechanic friend of mine call around to his contacts to find a place that could turn my rotor. Not difficult for the "right" person but tough to find.
 
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Old Apr 18, 2011 | 01:37 PM
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Dropped my rotor off to a different shop that said they could do it on Friday, the just told me they cant do it either and don't know who can. That sucks

There are a couple tractor trailer type of mechanic shops near where I work. I will stop in there on my way home tonight to see if maybe they can cut them.
 
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Old Apr 18, 2011 | 06:45 PM
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You might want to look at your tires. I just had to replace one that visually looked fine, but it was bouncing. Tire guy said the belt inside must have snapped and the tire was 'out of round'.
 
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Old Apr 19, 2011 | 01:53 PM
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Originally Posted by bigtexan99
You might want to look at your tires. I just had to replace one that visually looked fine, but it was bouncing. Tire guy said the belt inside must have snapped and the tire was 'out of round'.
But it only happens when appling the brakes hard.

My future father-in-law called around for me and found a Napa that will cut it. Should be done when I get home today.
 
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Old Apr 20, 2011 | 01:12 PM
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NAPA cut my Rotor, I put it on and the truck was pulling very hard to the left, the side that was not cut. I went trough the brake treatment routine again and now it is perfect. Crazy that those very small groves could cause that much shocking and bouncing.
 
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