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Old 02-21-2007, 09:55 AM   #1
hipster35
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Default Rear Brake Drum Noise

Hey guys I have a '99 SL1 with drums on the back that are making a weird "crunching" noise that I need help with.

When I come to a stop and brake harder than normal the rear brakes sound like they are crunching. If I take it easy on the brakes they sound ok. The harder I brake the worst it sounds. It is really loud when I brake on a decline.

Any help would be great

thanks
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Old 02-21-2007, 10:16 AM   #2
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Default Re: Rear Brake Drum Noise

Sounds like it's time for new shoes. Don't wait too long either.
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Old 02-21-2007, 10:45 PM   #3
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Default Re: Rear Brake Drum Noise

Thanks for the qiuck reply. Now I have done front pads a few time but never rear shoes. How much harder are they to do?
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Old 02-21-2007, 11:56 PM   #4
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Default Re: Rear Brake Drum Noise

Quote:
Originally Posted by hipster35 View Post
Hey guys I have a '99 SL1 with drums on the back that are making a weird "crunching" noise that I need help with.

When I come to a stop and brake harder than normal the rear brakes sound like they are crunching. If I take it easy on the brakes they sound ok. The harder I brake the worst it sounds. It is really loud when I brake on a decline.

Any help would be great

thanks
remove the rear wheels and remove the drums and look inside. are they rusty and crunchy? are the linings completely worn out?
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Old 02-22-2007, 07:04 AM   #5
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Default Re: Rear Brake Drum Noise

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Originally Posted by hipster35 View Post
Thanks for the qiuck reply. Now I have done front pads a few time but never rear shoes. How much harder are they to do?
Yep, shoes are harder. Everything's held in with a bunch of springs. It helps to have the drums off on both sides. That way you can use one side for reference when you do the other. If you replace the wheel cylinder (recommended), you'll need to bleed the brakes. Here's a diagram of the brakes.

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Old 02-22-2007, 08:51 AM   #6
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Default Re: Rear Brake Drum Noise

since it hasn't been said, the "crunch" noise you are hearing is the shoes chewing up the drums, therefore, you should get the shoes changed as soon as possible. when you remove the drums, look at the surface the shoes contacts, and if any grooving is present, take them to a local shop to have them turned. the shop will be able to tell you if they are in decent shape for turning, or if they are too damaged to be turned. installing new shoes in damaged drums causes improper braking action, and also will cause your new shoes to wear out quicker.
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