My 49 3/4t has a little slop on the passanger side pin from all the miles I’ve put on it since reviving it so its time to do the king pins before they get bad and need extra work. I picked up some nice old USA 🇺🇸 made king pins complete in box and i have the correct size reamer en route. I know a lot of people use the ones from the normal vendors but for a part like this with precision fit I would rather use some known good old trusty USA parts. Wish me luck all goes smooth. Anyone use the “thompson products” brand before? I understand they were a very popular supplier back in the day.
Find someone with the right size and length range mandrel for a Sunnen hone, and don't get anywhere near those new bushings with a reamer. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Nice look like they were just shipped.Since your doing this keep us informed on the process .I did mine a few years ago but I don’t understand the reamer part mine is a half ton and they were just remove and replace .Is the 3/4 ton a little different?
I can control clearances down to a fraction of a thousandth with my Sunnen machine, and I've fitted hundreds of king pin bushings on the same type of machine over the past 50+ years. A reamer is sort of like "measure it with a micrometer- - - -mark it with chalk- - - -and cut it off with an axe!" The mechanics at my father's shop were fitting kingpin bushings with a hone back in the early 1950's, so the idea isn't exactly something new. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Hmmm. Well i will figure it out with what i got. Its not like its a crank or anything so im not too worried out some hackery. If need be i have the old trusty southbend 9” that i can make something happen with if i need to make up some kind of pilot devices.
I do like your micrometer, chalk and axe analogy. That actually sounds right up my alley 😂
Nice look like they were just shipped.Since your doing this keep us informed on the process .I did mine a few years ago but I don’t understand the reamer part mine is a half ton and they were just remove and replace .Is the 3/4 ton a little different?
Yes, The 1/2 ton have floating bushings. They do not have to be reamed.
George
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne Super In the Gallery Forum
That box of parts looks like what goes in a half ton axle. I don't believe that he 3/4 ton kingpins used ball bearings. I believe that they used bronze bushings instead. These "bushings" look like thick washers.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
Its supposed to replace this GM # 601019 number. If you look it up it says it fits.
Take a look at your original setup at the bottom where the original thrust bushings are to see if there is enough room for those thrust ball bearing in that new kit to fit. It would be cool if they do.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
Well tore the front end apart today. Job went smooth as silk. Only needed the torch once. The truck did end up having the lower ball bearing under the spindle and not the thrust washer stack up so the kit worked out perfectly. I will include a pic of the bearing that came out. As for the bushings..... after I drove them out I noticed they were split style bushings. Im not sure if these were stock oem originals or not? Someone might know what originals were. I drove the new ones in and reamed them to fit with the “correct” factory tool and the new pin fit up was absolutely perfect just like it was done in the 50’s. All in all wasn’t too bad a job.
