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 > Anti-seize on brake caliper bracket?

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GeoBoy

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Posted: 09/06/19 07:20am Link  |  Quote  |  Print  |  Notify Moderator

Turtle n Peeps wrote:

You have no worries about having lube on your bolts.

Bolts don't loosen up because they are lubed up. They loosen up because they are not properly tightened.

Think of rod bolts in an engine. They are in lube all the time 24 hours a day and they don't loosen up or have loctite on them. They don't loosen up because they are torqued properly.

X2. Use anti-seize on the caliper bolts and torque to manufacture spec. I was a Saab mechanic and never had a brake caliper fall off a car ever.

Cummins12V98

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Posted: 09/06/19 10:31am Link  |  Quote  |  Print  |  Notify Moderator

Slide bolt threads should have medium loctite, and YES properly torqued. DRV had a recall on the subject.


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fj12ryder

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Posted: 09/06/19 12:07pm Link  |  Quote  |  Print  |  Notify Moderator

"DRV"?


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Ron3rd

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Posted: 09/06/19 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

fj12ryder wrote:

"DRV"?


DRV Mobile Suites


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fj12ryder

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Posted: 09/06/19 01:26pm Link  |  Quote  |  Print  |  Notify Moderator

I know DRV can mean Mobile Suites, but I didn't know they also made brake calipers.

Cummins12V98

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Posted: 09/06/19 01:34pm Link  |  Quote  |  Print  |  Notify Moderator

Ron3rd wrote:

fj12ryder wrote:

"DRV"?


DRV Mobile Suites


“Doubletree Recreational Vehicles”

DRV issued a recall on the Kodiak caliper slide bolts because they were falling out.

The specified RED loctite. Overkill IMHO, I always use BLUE.

fj12ryder

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Posted: 09/06/19 03:12pm Link  |  Quote  |  Print  |  Notify Moderator

Okay, that makes sense. Thanks.

Almost sounds like the bolts were undersized and stretching, then loosening up. The loctite wouldn't really address the issue, but it would keep the bolts from then falling out.

Pretty rare for caliper bolts to just fall out, but not unusual for the recommendation of loctite on those bolts. I agree that blue should be perfectly fine in most circumstances.

ACZL

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Posted: 09/06/19 04:52pm Link  |  Quote  |  Print  |  Notify Moderator

How about VW using a 14mm triple square bit to mount their calipers onto their vehicles? Course I don't have that part (NAPA does tho). WTH? Can't use regular bolts like everyone else?? UGH !!!!


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STBRetired

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Posted: 09/06/19 05:03pm Link  |  Quote  |  Print  |  Notify Moderator

Rod bolts, head bolts, main bearing cap bolts are all put together using assembly lube so that you get the proper stretch when you torque them. Some anti-seize will not be a problem. Of greater concern is the number of times those bolts have been removed and re-torqued. Every time you torque that bolt you stretch it a bit further. Eventually, the bolt will fail, not by loosening, but by breaking because it was overstretched. On our race car, we replace any bolt that would be torqued more than twice. On my personal vehicle, I follow that same rule for any safety related items like brakes and suspension / steering. Anything else, like wheel studs, I will usually go 4 or five torquings before replacing.


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Grit dog

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Posted: 09/06/19 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

STBRetired wrote:

On my personal vehicle, I follow that same rule for any safety related items like brakes and suspension / steering. Anything else, like wheel studs, I will usually go 4 or five torquings before replacing.


Lol, really? By way of all your experience with engines, one would think you'd understand clamping force, slip critical connections, yield and non yield tensile strength, torque as it relates to tension etc.
You seriously replace the brake caliper bolts after using them twice and your wheel lugs after 4-5 tire rotations?
I don't believe you....


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