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FE900 kingpin replacement

Posted By Tim Buchholz Last Year
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Tim Buchholz
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I put the K125G kit in Sat and Sun last weekend. Nice easy install. The old pins were not stuck and came out real easy. They were Rockwell with nylon bushings. Bushings were cracked and crushed/worn and one was split in half opposite the manufactured split. The pins were still in descent shape and with a little polishing probably could have been reused with new bushings. Not sure if they are OE or had been replaced.

I cut the top off an old pin just below the shims and polished it. Used it to seat in the bottom bushing and bearing and hold it together with a floor jack pushing it up from bottom to make shims install easier.

I purposely shimmed it a little too tight and drove it Monday. It steered heavy and wandered a little. Wouldn’t completely return to center on its own without extra wheel nudges coming out of turns and bends in the road. Backing up my trailer was a bear. Reshimmed it Tues and drove Wed. Nice and easy. The truck seems happy. This truck always steered light for manual. Feels good. Goes straight.

I’ll keep my eye on the steer tires to see if the toe changed and needs adjustment. This truck has never chewed steers and been relatively gentle on drives. The Michelins I have on the steers now have zero abnormal wear.

I recommend the Stemco-Kaiser no ream kit as far as ease of installation and steering feel.
Time will tell if they last. But in my case with only 12k miles a year they should on this truck in my lifetime.
Tim Buchholz
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Went to our local 100 year old spring service shop today and he had an old but new dusty K-125G Kaiser kit boxed up in ‘02 before Stemco got ahold of them. A little pricey but Billy and his family have been doing my family right for over 50 years on our stuff so I don’t mind. $475 No nylon all steel kit.

He was telling me the FE-900 series was one axle that they never had kingpin issues with. Tons around back in the day and they didn’t have to service many of them. Told me 3 million or more on original pins would be no surprise. Good to hear.
Aaron
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Tony got it, Kaiser  70.125.07 is the no ream brass that I got last year for mine, the K 125-G is the no ream stainless I see there is a kit on e bay but I'd check for sure for what ti fits the add says something about 1 1/2 to ford.


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Tony Bullard
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Aaron (10/15/2020)
Hold on, there is a non ream brass thats out there, I got a set last year and did mine, I use to use the stainless twist in bushings but you can't get them anymore,I'll get the number tomorrow.

The no ream brass are the PlusKit.



You'd want a 70.125.07. $150 less than the K125G

Which one is better?


Tony
Tony Bullard
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The OEM 144 is brass (See Rockwell chart earlier) The K125G Stemco Kaiser Qwik Kit No Ream King Pin Set is for 123, 144 and other OEM numbers.
2264897, 1643174, 123, B7TZ-3111C, 155932R92, 303137C92, 69576R92, 123, 144, 152, 186, 123, 144, 857328, 2362900, 2237497

You can't tell by the picture but it doesn't look like they are nylon. https://www.drivetrainamerica.com/k125g-stemco-kaiser-qwik-kit-no-ream-king-pin-set/
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Tony
Aaron
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Hold on, there is a non ream brass thats out there, I got a set last year and did mine, I use to use the stainless twist in bushings but you can't get them anymore,I'll get the number tomorrow.


Driving the greenies nuts
http://www.killcarb.com/
wayne graham
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I think 123 is brass and 144 is nylon.  If memory serves this is right. definitely go with the brass. The selling point of the nylon was that they did not have to be reamed to fit. Get the brass and any machine shop can size them to the pins for you. The rest of the job is straight forward. 

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Tim Buchholz
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Bingo. Tony.
That’s what I was looking at. The only thing I don’t like is that one word “nylon” when it comes to bushings. That to me seems like it would be a boomerang. I will be back in there to fix them again.
Tony Bullard
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The Rockwell FE900 uses a 9.75" tapered pin.

The Stemco K125G is a 9.75" tapered pin.




I'd guess it's the one. Check your length and nut. The axle taper is the keeper.


Tony
Tim Buchholz
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