hello, i got an old 56 f100 basket case pulled from a swamp home and started tinkering with it. No matter what i do i can not get the king pins out, they seem just rusted in. Ive never worked on a truck with a king pin front end so im not sure im even doing it right.
i removed the swedge bolt on the side of the spindal (had to drill it out)
removed the grease zirts
put a socket on a jack on the under side of the king pin and lifted, nothing, hit on the axle with pressure on underside of king pin, nothing, tryed to drive king pin down, nothing, air chisiled the cap (?) on the top of king pin, it came off but no movement of king pin.
Am i doing somthing wrong? Does the king pin come up or drive down? My next option is some heat and try to burn rust and junk loose.

Can someone point me to some instructions on how to remove king pins.
anyone with any tips for stuck ones?
thanks guys
rob

 

It sounds like you may have to remove the axel and have them pressed out on a big hydraulic press. I don't know if you have tried it, but heat helps. I had a two ton dump truck that I had to use a rosebud tip with an oxyacetylene torch on. I heated the end on the axel until it was cherry red and then drove the pins out. Be fore warned, it aint easy and it takes two people to do it right.

Later Man...

 

All I can say is heat and a big hammer

 

This is strange - I've posted about 5 times to this thread, it shows up, then disappears...any ideas? Not sure if this one will make it...

R

 

Heat on the axle - not good! You don't want to lose any of the strength, and heat can do that. My kingpins came out the bottom, once I got the "cap" off. I used a brass drift to break it loose, than a good air chisel, that I modified a bit to fit the kingpin. Make sure you use Kroil, or PB Blaster, and spray it down good, top, bottom, and in the retainer pin hole. A LITTLE heat doesn't hurt, but cherry red, IN MY OPINION, is WAY too hot for the axle. Once it "breaks loose", it'll come out fairly easily. The pin itself is VERY hard, so you don't have to worry about giving it a very solid "whack" - it won't deform, so it should come out...

If you are using heat, here's what another forum says about it:

And, yet another:

You'll love it when it's done! Just make sure the bushings are bored together, I have a ream to do it, but I'd probably take it to a machine shop, next time. Let THEM guarantee the work...




R

 

Ah!!! I can't believe it's true, but it appears if you mention the actual name of a different forum, it removes the post!! Can that be??? I removed the actual name, and put "another forum" instead, and the post stood.

It's not like it's a competition! And, here I touted supporting FTE, even to the point of not only losing friends, but even making enemies...can someone verify that this is a correct assumption??

If so, time to rethink things...

R

 

I believe I have mentioned other forums before and not had that problem. Of course it could be the work of a moderator I guess but I can't think of a good reason for it.

Later Man...

 

It may be another problem because I kept getting e-mails telling me of your post but there was nothing there.

later Man...

 

Maybe I should have claified that a bit. It the case of that old dump truck we had to go that far even using a 2# hammer. So long as the heat is directed to the immediate area around the king pin it won't hurt it that much. We hauled loads way in excess of recommended limits with that truck for years and NEVER had any problem. However, I do agree with you that you should never use more heat than needed because I'm sure there hase to be some minimal effect no matter what you do. Keep in mind that a dump truck is going to be a lot nastier job than a panel or pick-up trock.

Later Man...

 

Hmmm, it worked that time.

 

Three hours later, it appears! Sorry folks, for the intrusion!!!! I didn't plan on it. Now, back to the regular programming....

R

 

Dont fell bad, every time I post a reply, the poor guys thread dissapears, so lately,
I keep my mouth shut. !!!!!!!!!!!!!
sam

 

If you heat to less than 450 degrees, you are safe. That is way below any color, but obviously too hot to touch. It will coke up any oil you did get into the space around the pin.

 

Roger,
I sent you a PM just now about this.

This morning I got an e-mail claiming to be fro the FTE staff telling me not to post that forum's name. I don't mind telling you I was hot. O sent them a reply telling them I didn't post it and only replied to a post that did.

I wrote to the moderator about it. I guess we will see how that goes. I agree with you. Maybe it's time a lot of us did some rethinking when it's time to contribute.

Later Man...

 

hey guy thanks!!! i tried to post all day and it would not work..
I did get them out. Had to use some heat and a big hammer, did the trick.
thanks for the replys!!!
rob