Brake caliper question.
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Service manual defines all four fasteners, caliper and bracket, as one time use, to be replaced every time they are re-used. Wow. I, too, use thread locker.
Last edited by redzg; Jun 29, 2018 at 07:50 AM.
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I decided to replace the fasteners but the smaller caliper mounting bolts were discontinued by Chevy but I found the same grade bolts in a local auto parts store under the Dorman brand. I ordered the bolts that fasten the caliper mounting brackets to the uprights from the local Chevy dealer (I was suffering a brain cramp at the time-shouild have looked on line). Part number 14084051 bolts came with a yellow threat locker already applied to them.
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I reuse the large caliper abutment bracket bolts over and over . I use a wire brush to clean the bot threads and a 12 Gauge shotgun brass brush for the bracket threads. Then I use a small amount of LocTite BLUE threadlocker and tighten the blots up to spec. Don't use RED threadlocker!
You need heat to release that stuff.
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That's because the bolts supplied by GM for the brake components already have a threadlocker applied to them. So all a tech has to do is to tighten them to the correct torque spec.
I reuse the large caliper abutment bracket bolts over and over . I use a wire brush to clean the bot threads and a 12 Gauge shotgun brass brush for the bracket threads. Then I use a small amount of LocTite BLUE threadlocker and tighten the blots up to spec. Don't use RED threadlocker! You need heat to release that stuff.
I reuse the large caliper abutment bracket bolts over and over . I use a wire brush to clean the bot threads and a 12 Gauge shotgun brass brush for the bracket threads. Then I use a small amount of LocTite BLUE threadlocker and tighten the blots up to spec. Don't use RED threadlocker!
You need heat to release that stuff.
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There are a lot of bolts where German torque works well for a long time. Sometimes I think accurate torque is an absolute, then remember working with axle bolts on my earlier Triumphs on the side of the road, using the tools in the under-seat kit.
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Now its blue loctite every time.
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