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Old 11-17-2007, 08:24 AM
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99 Mercury Sable - Brake Drum Backing Plates

Hey folks,

My wife just picked up a 99 Mercury Sable from the Drug Enforcement Agency.

Problem I'm having is the drivers-side rear wheel which is a drum is rubbing. If I remove the drum and rotate the axle, no rubbing. I've removed the shoes entirely and when I put a new drum on and rotate it, I get a rubbing noise. I can't see where it's interfering with anything so I'm thinking it might be hitting the backing plate. It does this with both the old and new drums.

This gets really annoying listening to, but more than that I'm concerned about the friction resulting in a mechanical failure or maybe even a fire from heat build up.

Anything I can do or look at for this?

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Old 11-17-2007, 11:49 AM
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called the vehicle mechanic at my work and he said that it sounds like the El' Cheapo-Unreliable Auto Zone drums were causing the issue. So I just went and dropped another $80 on two new drums from NAPA...tossed them on and it's the same story. I'm getting interference with the backing plate but the plate doesn't appear to be warped and to have both wheels grinding / scraping seems a little unlikely that the backing plates are bad on both sides.

Again, any insight on this would be awesome.
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Old 11-17-2007, 07:08 PM
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Quote:
Originally Posted by unstable
seems a little unlikely that the backing plates are bad on both sides.

Again, any insight on this would be awesome.
Can happen ... the vehicle in question has most likely been subjected to " Chases and OFF road excursions "

Look closely at the backing plates ... for signs of rubbing ...

I had this problem on a Thunderbird one time and I put the drums in a brake lathe and removed about two hundred thousands off the edge of the drum. Problem solved.
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Old 11-17-2007, 11:21 PM
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My wife was up my bum to take the car to the shop, luckily I got ahold of the mechanic at my work and he dropped by to take a look. he said the rubbing was neglible and the sound that I was hearing was mostlikely a bearing or the feathering on the tire.

He recommended I move the questionable tire to the front and if the sound moves to the front then BINGO it's the tire. Otherwise give the bearing a shot.

Thanks for the response.
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