Stripped rear caliper bolt fix?

[rtson]

I did some searching and found that there have been issues with caliper bolts stripping out. I have no one to blame but myself. What I'd like to know is if when the bolt strips if the threads are potentially usable, is there a difference in hardness between the threads and the bolt? Or how can I find a similar guide pin bolt in a larger size to tap out the threads to a larger size. I am doing all I can to not replace the caliper, because I am sure if I put one new one in others will start to go. Feeling extremely dumb.

 

[informationjunky]

on my old 60, one of the caliper threads striped out and I used a thead sert because I wanted to keep the same thread sixe.

 

[latinoguy]

I ended up buying a used pumpkin when I stripped a caliper bolt on the front axle.

 

[rtson]

By pumkin, you mean new bolt , or you talking like for Cinderella?

 

[96r50]

I would guess that James is referring the knuckle housing as the pumpkin. That would only apply to the front caliper bolts though.

I would pony up the funds for a new caliper if possible. Brakes are not a place to save a few dollars IMO. I'd contact cruiserdan about a pair of remanufactured rear calipers.

 

[informationjunky]

The tread sert repairs by replacing the damaged threads with a steel insert. Should be plenty strong. You drill out the old, tap for the instert, install insert and you have the same threads as before with a nice strong steel insert.

 

[Ihasfip]

Heli-Coil.

Or what he said. ^

 

[Riad]

Some what similar case as mine:

https://forum.ih8mud.com/80-series-tech/81283-fixed-stripped-holes-knuckle.html

It's been few years now and still kickin'

 

[scottm]

A helicoil job is pretty easy, and will leave a stronger and more wear-resistant thread than new. I put them in new machines quite often if the threads will take abuse. The bolt is harder than the caliper, but helicoil threads will be harder than the bolt.

Most machine shops have and use helicoils regularly. You need to drill the hole slightly larger, then turn a special size Helicoil tap into the hole to thread it, then turn the Helicoil insert into the threaded hole. If I had the caliper, drill bit, tap, and helicoil in front of me I could do it in about five minutes including cleanup. If it's hard to get to it might take a little longer.

 

[rtson]

Got Lucky

No thread repair needed. Only the bolt was stripped. Put in new bolt and was able to torque it to 90 ft/lbs no problem. Had plenty of plan B's if needed.