Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Noise in Rear brakes

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Old Aug 28, 2007 | 06:01 PM
  #1  
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Default Noise in Rear brakes

Hi All,
When the car is cold it is normal. When I drive for a while(about 20 min) when I stop you get a vibrating sound that is VERY loud. It sounds like i'm draging something. I took the wheels off and check to see if something was stuck in the wheel but there was nothing. It is in both rear wheels but louder on the right side. I would like to know if anyone ever had a problem like this before. Thanks for the feedback.

Riculus

p.s. I changed the rotor and the brakes last year.


 
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Old Aug 28, 2007 | 06:16 PM
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Default RE: Noise in Rear brakes

How do the pads look?
 
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Old Aug 28, 2007 | 06:58 PM
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Default RE: Noise in Rear brakes

They good, I don't see any sign of damage.
 
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Old Aug 29, 2007 | 04:19 AM
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Default RE: Noise in Rear brakes

Could be the parking brake shoes?

Did you replace the rotors & pads with OEM? What about the spring kits, did you replace them as well? Did you replace the pad shims with half-size version?


JPN
 
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Old Aug 30, 2007 | 01:53 PM
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Default RE: Noise in Rear brakes

Yes, the rotor and brakes came from the dealer. Not shore if they havethe shimes.
When I brake normally it is fine, its only when the car is coming to a stop thats when you get that dragging sound.

Riculus
 
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Old Aug 30, 2007 | 05:39 PM
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Default RE: Noise in Rear brakes

Install the Half shims and that should take care of it.
 
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Old Aug 30, 2007 | 11:08 PM
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Default RE: Noise in Rear brakes

Is the shimes all I need or I need other stuff to install it. and can I get some instructions on how to do it.

Thanks,
Riculus
 
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Old Aug 30, 2007 | 11:56 PM
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Default RE: Noise in Rear brakes

Shims go right behind the bad. You're supposed to cut a square out of it, but the question is which way do you put them in...
 
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Old Aug 31, 2007 | 10:50 AM
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Default RE: Noise in Rear brakes

The shims come with directional arrow, though as RedTurbo says, it is not clear which way the shims should face. I installed mine with the arrow pointing UP, and with the help of CV-joint grease (moly-based), no noise problem occurred ever since. Silicone-based grease seems to work just as well.

I would also replace the pad retaining spring tensioner kits, which is only about $6 a package.

http://www.fcpgroton.com/volvo850brakes.htm#rear_pads

I wish you luck,


JPN

[IMG]local://upfiles/6892/9BEB9D63B3CA4053A33643E69B6E4AFC.jpg[/IMG]

[IMG]local://upfiles/6892/B5190D756687423691E705DA5128347A.jpg[/IMG]
 
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Old Aug 31, 2007 | 05:06 PM
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Default RE: Noise in Rear brakes

^Yeah, but the arrow is so confusing. You always forget if it's pointing up or down lol. It could theoretically be pointing any direction.
 
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Old Aug 31, 2007 | 06:17 PM
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Default RE: Noise in Rear brakes

Agreed, the kit definitely needs an instruction[8D].


JPN
 
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Old Aug 31, 2007 | 08:44 PM
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Default RE: Noise in Rear brakes

The Arrow is supposed to go Up.
 
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Old Aug 31, 2007 | 08:57 PM
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Default RE: Noise in Rear brakes

Yay!!


JPN
 
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Old Sep 2, 2007 | 01:11 PM
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Default RE: Noise in Rear brakes

Thanks for the feedback guys, I ordered the shims and the pad retaining spring tensioner. I let you guys know how it works out once I get it done.

Riculus
 
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Old Sep 2, 2007 | 03:21 PM
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Default RE: Noise in Rear brakes

Hi Riculus,

Wish you luck, will wait for your update.


JPN
 
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Old Sep 7, 2007 | 06:38 PM
  #16  
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Default RE: Noise in Rear brakes

The rear brakes had shims, however mymechanic decided to put the new shimson the old ones. So I have double shims and new hardware. I used it for work today and I did not get the noise. Thanks for the help Tech, jpn and the rest of the guys.

Riculus
 
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Old Sep 7, 2007 | 07:47 PM
  #17  
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Default RE: Noise in Rear brakes

Well done!

Should the noise come back, try moly-based grease (CV-joint grease) or silicone-based grease.


JPN
 
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