FTA kingpin question

moll · Jun 28, 2018

Just curious, has anyone found a kingpin and bushing kit for a truck that fits? Figured we would have to machine
something but thought to ask.

Ill John · Jun 28, 2018

I took my measurements to NAPA and matched up a set for my ZAS

moll · Jun 28, 2018

Thanks John, i'll see how it goes, measures 1.37" and in my old truck book everything
is either bigger or smaller than that. Probably machine shop time.

T.R.K. · Jun 28, 2018

A Kingpin set for a certain Dodge truck from about the early 60s will work in a ZAS. The taper pin groove in the Dodge kit is different but you can grind it deeper and it will work.

I'm thinking those kingpins are only 1-1/4, though.

When I was looking for axle bushings for a Cub Cadet Original I found some steel backed bushings at McMaster Carr website that I thought would work as kingpin bushings, but they were not cheap, though. On the other hand, that's probably a job you only have to do every 50 years or so. (If you know what grease is. . .)

Ill John · Jun 29, 2018

I realize yours are bigger but I just wanted to let you know where I found a source.

moll · Jun 29, 2018

Ordered from Mcmaster Carr, should be here Tuesday. Bushings anyway, have to reuse the kingpins but the
worst of it is the axle casting, im going to have to weld up and machine the holes round again this weekend.

molinegb · Jun 29, 2018

I would pull off axle and bore out axle and put in oversize bushings and use any size pins you want in diameter.

sms · Jun 30, 2018

I was just able to fix the front end of my antique truck with oversized kingpins. I found NOS kit .010 oversize that were tight in the worn axle. Maybe you can find a larger pin and ream the axle. In the old days machine shops used to do this and still do for trucks. If you look at the link the last item under services is "Sleeve Front Axel Eyes".
I tightened up the front end of an RTI last winter. The pins weren't too bad but the bushings were worn. I bought standard size bushings the same size as the pins where they were not worn (don't remember dimensions) thinking I might have to ream them to fit. (Original bushings would have been oversize for clearence). The stardard size bushings took all the play out of the front end. The only catch was the top bushing had to be installed after assembly since the center unworn portion of the pin would not fit through the bushing.
Truck Shop in our area

FTA kingpin question

moll

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Ill John

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moll

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T.R.K.

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Ill John

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moll

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molinegb

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sms

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