My brake caliper came off, again!

[Dino]

Since I've had this car on the road, I have lost caliper to bracket bolts from all four brake calipers. Every caliper has come loose. The left rear has actually come off, laying in the wheel. This has now happened twice. I reinstalled it with stronger Loctite only a few months ago. Once more it snapped the brake line and parking brake cable. This happened an hour ago, luckily I just turned onto my street.

It's an easy fix but unless I find why it's doing this, I'm not even going to attempt. I run Mustang rotors and calipers with Invincibleextremes' brackets. Mind you, this time I was driving it as if it was orange. I went into a right hand turn pretty hard, bouncing through the infinite amount of potholes that Michigan is famous for. Even when I drive this car dead straight on the pothole laden roads, the whole car shimmys side to side. My best guess, it's putting a bunch of strain on everything down there. It has new bushings and bearings throughout so why is it doing this? And more importantly, how do I fix it? I can't fix the potholes that's just how it is, but it's not going to stop me from driving this car.

[b5blue]

 

[Mike DC]

Pics might help.

[69hemibeep]

The car is rejecting the ford parts     

[Mike DC]

 
I agree that even "driving it like it's orange" should not be rattling the calipers loose.  Something needs to be figured out here.   

You might wanna contact the seller.  If it's happening to you then it may be happening to others.  At the very least they would wanna watch out for it. 

Where did the caliper bolts come from?  Were they the original (Mustang) ones, or something that came with the brackets? 

 

[Dino]

The car is rejecting the ford parts     

 

I agree that even "driving it like it's orange" should not be rattling the calipers loose.  Something needs to be figured out here.   

You might wanna contact the seller.  If it's happening to you then it may be happening to others.  At the very least they would wanna watch out for it. 

Where did the caliper bolts come from?  Were they the original (Mustang) ones, or something that came with the brackets? 

 

I bought original Mustang bolts last time, but I had different ones on it before so both kinds came loose. Those may have come with the calipers, I'm not sure.
I start a 56 hour run at work tomorrow so I'll get pics on Saturday.

[metallicareload99]

The car is rejecting the ford parts     

When I have my winter tires on my Charger, the entire rear brake setup is Ford Mustang from the axle flange out...

That being said, I've also had my left rear brake come loose, but not all the way. I'm using a different rear brake kit, I believe. I was able to tighten everything and it's been good since. I have had problems with the left axle leaking that might have played a role in the brake coming loose. The left axle also leaks a lot WHEN the left brake is loose also 

[b5blue]

Any reports of Mustang fails?

[Mike DC]

Any reports of Mustang fails?

Hard to know.  The owners wreck them too quickly.   
   
   

[b5blue]

LOL 

[John_Kunkel]

Check to see if the caliper bolt size is available with locking inserts. If not, consider drilling the bolt heads for safety wire.

[Dino]

Heck I didn't know that existed! I got some safety wire so I'm drilling them tomorrow. Stronger Loctite as well. I'm doing all calipers. I can't wait to have the garage finished so I can finally have a lift. Getting up and down from under that car is getting old.

[Dino]

Good news and bad news. The caliper to bracket bolts I installed a few months ago are still in place and torqued to spec. I forgot the bracket is 2 parts. It's those nuts and bolts holding the 2 together that are gone.

[John_Kunkel]

Good news and bad news. The caliper to bracket bolts I installed a few months ago are still in place and torqued to spec. I forgot the bracket is 2 parts. It's those nuts and bolts holding the 2 together that are gone.

Were there lock washers under the nuts? A better choice is lock nuts:

https://www.mcmaster.com/products/locknuts/hex-nut-profile~heavy/

[b5blue]

The nyloc nuts were use one time and throw away if removed. (Just saying.)

[Kern Dog]

My Dr Diff 11.7" setup uses the standard 5 stud/nut attachment for the adapter bracket to the axle housing, then the caliper bracket mounts to that, and....

[John_Kunkel]

The nyloc nuts were use one time and throw away if removed. (Just saying.)

Well, that's lawyer talk...as long as the nut retains some prevailing torque it can be reused but the locking spec won't be as original.

To be absolutely correct, a nyloc nut shouldn't be used if it's exposed to high heat which might occur in overheated brakes. In that case an all-metal locknut would be better.

[Dino]

1/2-20 bolt and nut with red Loctite. I don't want that sucker coming off unless I heat it up.