Need help with lower front shock mount

[NKC]

Someone jammed a wrong nut on the pin, stripped it all out. I haven't been able to find/search a part to replace the pin. I can't tell if it's pressed into the axle tab or the whole thing is welded as a unit.

It's a later model axle in a '64 FJ40.

 

[B y r o n]

The pins are welded to the tabs. Something like this might be your easiest fix but you should take some measurements first as I can't recall the size of the pin where the shock bushing sits.

They are for a Camaro but are metric. Grind off the weld on the pin and drill it out of the tab. Then it's a simple matter of bolting one of these in.

 

[shawnfj40]

^ what he said x 2

 

[Redgrrr]

I have spare housing I could cut one off for you for cost of shipping and a grinding wheel @$3

 

[NKC]

I have spare housing I could cut one off for you for cost of shipping and a grinding wheel @$3

Thanks for the offer, not at the welding stage yet, I can do the cut and drill stuff, and the other side has the same shiny nut jammed on it, I guess I'll get to do both side.
Appreciate it!

 

[NKC]

The pins are welded to the tabs. Something like this might be your easiest fix but you should take some measurements first as I can't recall the size of the pin where the shock bushing sits.

They are for a Camaro but are metric. Grind off the weld on the pin and drill it out of the tab. Then it's a simple matter of bolting one of these in.

Thanks for the info, sounds like a plan!

 

[B y r o n]

Thanks for the info, sounds like a plan!

You're welcome.

I did find another bolt that I know would be the right size but I figured the cost would make it an unattractive option at $31 each.

This is a replacement upper shock bolt from SOR. The other problem with it is you would need an additional spacer on the back side or it would not tighten to the tab.

 

[honk]

Since it doesn't appear to be a restoration all you need is something that'll keep the shock from walking off the pin, which walk it's unlikely to do in the first place.

I think I'd see if I couldn't run a die down that remainder, put on a correct thread nut and call it a day, leaving any permanent repair for some time when the axle housing is out of the truck.

 

[65swb45]

Since it doesn't appear to be a restoration all you need is something that'll keep the shock from walking off the pin, which walk it's unlikely to do in the first place.

I think I'd see if I couldn't run a die down that remainder, put on a correct thread nut and call it a day, leaving any permanent repair for some time when the axle housing is out of the truck.

X2 on this. Path of least resistance. If it works out (and it probably will) you will feel empowered by this low-tech solution.

Good call honk!

 

[Downey]

^^^agree, plus some locktite on the nut will ensure it works.

 

[NKC]

What thread is that? I may have a die in my Harbor Freight Christmas gift.

 

[B y r o n]

Looking closer at the stud if cleaned up you may be able to catch a few threads even with the washer in place.

I just don't know if thread locker would keep it in place as I'm guessing maybe only half the nut will be engaged. If you can find a castle nut then cross drilling the stud for a carter pin would definitely hold it in place until more permanent repairs could be made.

 

[65swb45]

Looking closer at the stud if cleaned up you may be able to catch a few threads even with the washer in place.

View attachment 1290121

I just don't know if thread locker would keep it in place as I'm guessing maybe only half the nut will be engaged. If you can find a castle nut then cross drilling the stud for a carter pin would definitely hold it in place until more permanent repairs could be made.

The older trucks came that way: cross-drilled and castle-nut. MIL-SPEC.

 

[sproggy]

The older trucks came that way: cross-drilled and castle-nut. MIL-SPEC.

Yup, my '71 is as you describe. Seems to me there is enough thread on there already to get the nut on. But I guess not…thus the OP's post. Good luck! At least the stud is easy enough to get at…unlike so many other things we have to get at.

 

[Downey]

I still like my locktite a nut on as is theory, doesn't seem to me that there is a great deal of pressure trying to remove/displace the nut???

 

[MOTOV8R]

In college when we calculated strength of threaded fasteners it was based on 3 threads engaged. Looks like you can get 3 threads on that.

 

[NKC]

Anybody tell me what size nut to use? I can get one in town and try to make it work.

 

[65swb45]

In my mind's eye I see 12mm x 1.25. Now also consider that some outfits offer a flanged nut, which could do double duty as a shock washer and not have to sacrifice any of your remaining threads for a separate washer.

 

[NKC]

In my mind's eye I see 12mm x 1.25. Now also consider that some outfits offer a flanged nut, which could do double duty as a shock washer and not have to sacrifice any of your remaining threads for a separate washer.

20/20 vision with that eye. I couldn't find the size in the spreadsheet, or anywhere else but I could have missed it. Thanks!

Also not a size that's in my Harbor Freight tap and die set Christmas gift. surely did not want to thread on, and couldn't really dress those threads with a small file to open it a bit, ended up putting two nuts in a socket so I could wack it some, turn, wack it, turn, wack it until it bit. Ended up with some usable threads after all the wacking, and went the blue locktite route as suggested.

Had a few threads left even with the washer, My store didn't have flanged metric nuts, would have been cool.

Thanks for all the options, it's functional and reusable for now, and I know how I can fix it up later.

 

[Northbound]

Resurrection time

I just snapped off the lower passenger side shock mount nut, flush to the shock eyelet - the shock is off and I'm drilling it out, tapping it and putting a bolt in there. What a pain in the ass.

I fully expect to snap the driver side lower shock mount - I always get hosed at what should be an easy job.