King Pin Question?
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Senior User
Joined: Feb 2006
Posts: 479
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From: Sonoma, CA
King Pin Question?
My tired and neglected king pins need to be replaced. What is the difference between the nylon bushing sets and metal bushing sets. Any advantage to either? Longevity?
Thanks
Thanks
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Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
Hey neighbor, don't even think about nylon bushings they don't last. Press in new bushings and have them reamed with the proper kink pin reamer not a hone that automotive machine shops use as 90% of them can't do it properly. I would check toe in when your back together and give them a shot of grease at every oil change as well the U joints. This will get you over 350K mile service.
.....=o&o>.....
.....=o&o>.....
Last edited by "Beemer Nut"; Mar 28, 2006 at 11:47 PM.
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
Did you know they have nylon bushings for Big Rigs, yes those 18 wheelers and they didn't stand up to the pounding that axle gets with 12,000 pounds oup front. Wonder why? As I stated before a real king pin reamer. It has a extended pilot with a tapered ring that centers the reamer from the opposite bushing to allow consentric alignment to both bushings, ream one then reverse the reamer, ream the opposite bushing. Note I said ream. On a hone machine the bushings will be bell mouthed on the outside ends as well many shops will check pin fit with stone grit and oil. This will scratch up the pin and after the grit is washed a loose fit.
Yes I have a king pin reamer and do my own, I have passed 1 million miles starting on the second truck, new to me at 68K original miles.
My dumb a$$ ideas and procedures seem to work for me.
.....=o&o>.....
Yes I have a king pin reamer and do my own, I have passed 1 million miles starting on the second truck, new to me at 68K original miles.
My dumb a$$ ideas and procedures seem to work for me.
.....=o&o>.....
Elder User
Joined: Jan 2002
Posts: 525
Likes: 2
From: Mansfield, Texas
I will LOUDLY second that opinion on the reamer. I used a three blade hone too open up the bushings and it reamed them oblong. The king pin "shakes" inside the bearings. I will be installing new ones (again) very shortly.
Not sure what type of truck you have. But if it is a F250 or larger make sure you order the correct diameter pins for your weight of truck. They come in different sizes.
Robert P.
Not sure what type of truck you have. But if it is a F250 or larger make sure you order the correct diameter pins for your weight of truck. They come in different sizes.
Robert P.
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
That would be a 68 CS, the reamer a 5 blade adjustable for .860" bore.
Sorry to hear about your adventure with a 3 blade, it must of resulted in a triangle bore. I got lucky years ago and paid $25 for the reamer used from a 76 year old machinist who worked on Fords.
.....=o&o>.....
Sorry to hear about your adventure with a 3 blade, it must of resulted in a triangle bore. I got lucky years ago and paid $25 for the reamer used from a 76 year old machinist who worked on Fords.
.....=o&o>.....
Freshman User
Joined: May 2005
Posts: 47
Likes: 1
While on the subject of king pins... Is this job something that can be done in the driveway with simple hand tools or is this something that has to be done at a shop?
I've replaced everything else except the king pins and I want to get an alignment. The local Goodyear alignment place doesn't do that work. I checked with them today.
Would it be possible that I could drive out the king pings and remove the spindles and take them to a machine shop or would I most likely end up getting something stuck and not be able to finish the job?
I haven't messed with king pins since I was about fifteen years old (many years ago) and those were on a 58 Chevy truck. All I can seem to remember about that job is torches and big hammers!
Not something I want to happen in the drive when the wife need to park her car!
I've replaced everything else except the king pins and I want to get an alignment. The local Goodyear alignment place doesn't do that work. I checked with them today.
Would it be possible that I could drive out the king pings and remove the spindles and take them to a machine shop or would I most likely end up getting something stuck and not be able to finish the job?
I haven't messed with king pins since I was about fifteen years old (many years ago) and those were on a 58 Chevy truck. All I can seem to remember about that job is torches and big hammers!
Not something I want to happen in the drive when the wife need to park her car!
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Elder User
Joined: Jan 2002
Posts: 525
Likes: 2
From: Mansfield, Texas
King pin removal varies from "They fell right out. " too, as in my case: I needed a 20ton press, torch, brass drift pin and a 3# hammer.
Look here, for another thread about this.
Good luck.
Robert P.
Look here, for another thread about this.
Good luck.
Robert P.
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