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06-05-2010, 09:48 AM | #1 |
Drives: 2007 Yaris Hatchback Join Date: Jan 2010
Location: Central Florida
Posts: 254
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when to replace rear drum brakes
Have 90,000 miles probably half are interstate miles. So I bought new shoes at Peb Boys and the new ones look close to thickness of old ones. I know to replace at 1/16 inch. The new shoes are same thickness as two quarters and old ones are slightly lower than two quarters. Can I run shoes down to one quarter's width?
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06-05-2010, 10:10 AM | #2 |
Half a Bubble Off Plumb
Drives: 2009 Yaris Sedan Join Date: Mar 2009
Location: Bristol, Tennessee, USA
Posts: 1,593
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Yes, as long as any rivets aren't yet touching. Conventional wisdom is at least 1/32" clearance for rivets. You've probably got bonded linings, I haven't looked at mine.
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06-05-2010, 10:59 AM | #3 |
Drives: 2007 Yaris Hatchback Join Date: Jan 2010
Location: Central Florida
Posts: 254
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I never done drum brakes so when I first saw how thin they were I thought had to replace them. The new ones look like about 3/16 of an inch. I probably have 1/8 left
So I just sprayed everything down with brake cleaner. I was getting a short squeak sound when applying brakes. |
06-05-2010, 11:27 AM | #4 |
Half a Bubble Off Plumb
Drives: 2009 Yaris Sedan Join Date: Mar 2009
Location: Bristol, Tennessee, USA
Posts: 1,593
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Usually means some sort of contamination or rust.
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06-05-2010, 07:34 PM | #5 |
Drives: Black Vitz Liftback Join Date: Dec 2008
Location: Salt Lake City
Posts: 238
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A rule of thumb I was given by a mechanic-if the parking brake is working good and holds the car then the drums are fine. I've stuck to this theory and never had a problem even on an old wrangler with over 130k on it's rear drums.
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06-05-2010, 09:24 PM | #6 |
Half a Bubble Off Plumb
Drives: 2009 Yaris Sedan Join Date: Mar 2009
Location: Bristol, Tennessee, USA
Posts: 1,593
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That's certainly true. But when the parking brake gets loose it doesn't necessarily mean you need the rear brakes redone, you may just need to tighten up the cable a bit.
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06-05-2010, 09:38 PM | #7 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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keep rollin on the stock shoes, sounds like you got plenty of meat left
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