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02-24-2019, 09:22 AM
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#1 |
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69 c/10 lwb fleetside
Join Date: Jul 2004
Location: saint joseph TN
Posts: 195
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Re: front brake grabbing (locking)
checked the "new" brake drum with less than 50miles on it and it was out of round. took it to the auto parts store to have it turned. he said it was good bit out of round. put it back on last night and its all good now. just goes to show the word new dont mean nothing these days.
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69 lwb fleetside  67 swb fleetside  (2) 72 lwb fleetside 50 swb no bed  65 impala ss  65 1 ton flatbed
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02-25-2019, 01:44 PM
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#2 | |
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Registered User
Join Date: Jan 2013
Location: Buffalo Gap, TX
Posts: 229
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Re: front brake grabbing (locking)
Quote:
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My Chevy Truck Project Build Thread '62 Ranchero - 200 I6, 3-on-the-tree, power nothing. '71 LeSabre - 455 Stage 1, power everything. |
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02-25-2019, 05:35 PM
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#3 |
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Who Changed This?
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,980
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Re: front brake grabbing (locking)
In my experience a new front drum should be mounted to the hub and checked for out of round before it leaves the parts store. Just a little bit of tolerance buildup can cause an "out of round" condition. I'd recommend that you mark the drum and hub so that whenever you remove the drum from the hub, that it goes back on in the same orientation.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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02-25-2019, 06:15 PM
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#4 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,691
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Re: front brake grabbing (locking)
The first couple of times I was told I better have new drums turned before install I thought thats just crazy. New parts dont need turned. Two mechanics told me I’d be pulling them off right away. They were right. It is nuts. New parts made to spec should not need finishing before install. Period. It was explained to me after manufacturing they are just dumped in a metal bin and cooled that way so they aren’t stacked neatly and tend to warp some. Sounds bout right.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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02-26-2019, 10:20 AM
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#5 | |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,980
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Re: front brake grabbing (locking)
Quote:
 At the brake drum plant, sometimes too, I guess.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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