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Minneapolis Moline Tractors Discussion Forum

FTA kingpin question

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06-28-2018 07:22:53

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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.

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06-30-2018 04:26:17

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 Re: FTA kingpin question in reply to moll, 06-28-2018 07:22:53  
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.

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06-29-2018 13:41:26

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 Re: FTA kingpin question in reply to moll, 06-28-2018 07:22:53  
I would pull off axle and bore out axle and put in oversize bushings and use any size pins you want in diameter.

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Ill John

06-28-2018 11:16:39

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 Re: FTA kingpin question in reply to moll, 06-28-2018 07:22:53  
I took my measurements to NAPA and matched up a set for my ZAS

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06-28-2018 18:35:05

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 Re: FTA kingpin question in reply to Ill John, 06-28-2018 11:16:39  
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. . .)

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06-28-2018 15:48:06

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 Re: FTA kingpin question in reply to Ill John, 06-28-2018 11:16:39  
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.

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Ill John

06-29-2018 09:02:40

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 Re: FTA kingpin question in reply to moll, 06-28-2018 15:48:06  
I realize yours are bigger but I just wanted to let you know where I found a source.

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06-29-2018 10:00:54

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 Re: FTA kingpin question in reply to Ill John, 06-29-2018 09:02:40  
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.

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