F-150 Caliper Bolts backing out problem

[Andy Chase]

Has anyone experienced any problems with the bolts that hold the caliper onto the wheel assembly backing off over time? On my 05 F-150, my cousin and I redid the brakes about 2 months ago. On the way home from his house one of the bolts fell off at 70mph. Now this morning on my way into work a bolt on the other side backed out as well. My wife went to the dealer for the bolt and they told her Ford re-specd the bolt due to complaints about this happening. Ive done a few brake jobs and never had this happen on any other vehicles. When it happened the first time, I figured that it was due to one of us not tightening the bolt down tight enough. But having it happen a 2nd time had me thinking a little differently. This time I added some lock-tite blue to it to hopefully prevent it from happening again. (It also gave all the GM fans at work a reason to rip on my Ford).

 

[Roger Batts]

The replacement bolts have thread sealer on them. I tell my customers to put some fresh sealer on the bolts any time they change the brakes.

 

[swshawaii]

IIRC, the caliper anchor bolts coming loose is fairly common on all the Ford truck forums.

Torque on those small bolts is around 80 ft/lbs, almost lug nut tight. Problem is getting a

torque wrench in the confined space. I turned the wheel(s) to lock, loosened them using a

six point socket, applied blue Loctite, and checked them for proper torque. Peace of mind.

 

[swshawaii]

BTW, that torque spec is for my '05 ST, the F150 may be considerably higher.

 

[Andy Chase]

I believe they are 100 ft/lbs

 

[scott degroot]

I've never had any issue on any year Ford truck with caliper bolts or the adaptor bolts coming loose...I've never even heard that it has been or ever was an issue