In the next couple days I'm going to be fitting my king pins to new bushings. I'm not sure what the clearance should be. Anybody have an idea what the specs are on that? Here's another question. I noticed the upper thrust bearing was on what looked upside down. Both sides were that way and as far as I can tell nothing has ever been done to the front axle. I can post a picture...
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I always have mine honed for a perfect interference fit
http://www.snydersantiqueauto.com/Co...tAssy-7013.pdf3~ Tudor's & 1~ Coupe
Henry Ford said,
"It's all nuts and bolts"
"Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible."
Mitch's Auto Service ctr -
Ok I'll go along with that. But what do you consider a perfect interference fit? Just enough the pin goes in without forcing it?Comment
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Yep, about like the piston wrist pin with a .0005" fit.Originally posted by Dennis View PostComment
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Ok. That's what I thought but wanted to make sure. Been a long time since I've done car or pickup pins and bushings.
Thanks Mitch and Tom..png "smile")
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I think the advice given above is all very sound. My only addition to this is "Don't leave the bushes too tight" The car will be all over the road if they are. You should be able to turn the pin in the bush with your hand but not feel any play. I lapped mine in using the part of the old pin that was in the axle. I prefer this way as a hone only follows what it there already and will not leave the hole any more round than what ever preceded it (reamer?)Comment
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Ok I finished em up with a .8125" reamer and did the last step with a light touch up with a hone. Pins went in fine turn by hand nicely and no side play.
Purdy, I think a .814 would have been a bit too much but everybody has their preference. I looked at Amazon going through page after page and came to one that was the last one left. It has 8 flutes, .8125" dia., and was priced at $10.31.
I made my own fixture to keep the reamer centered and straight in the bushings. It is not the same as the vendors sell. Not saying theirs is not any good, just that I saved quite a bit and I am very happy with my results.Comment
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You're right about that, cost too much. Too bad they can't be rented. All of the material I used for mine were salvage pieces of metal. Sometimes it pays to hang onto some of that junk.Comment
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Dennis,
Haven't been on in a while but....Hopefully you got this done but if not I would try to find a local machine shop with a pin hone.. sunnen variety or otherwise. I have one in my shop and it is indispensable! Couldn't do what I do or nearly as well without it. As tom said a .0005 fit is good.
I use them for brake shaft, spindle bolts, any bushed and fit shaft and bushings so they have a good smooth tight fit.
Larry ShepardComment
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Can someone tell me the clearance for the King Pins when installing new bushings? I don't know if there is a standard clearance needed or is this measurement just to the Model A Ping Pins....08-19-2020, 08:50 PM -
I am eliminating Mechanical brakes . what Model year King Pin do I use that have flat tops and no actuating cup on top. thanks04-28-2021, 06:45 AM -
New one on me. Im rebuilding (not restoring) a front end and on dissasembly noticed the lower cup didn't have a felt in it. Well incleaning up the king pin I found it, and the actuating pinfelt. they were both on the bell of the king pin.
...08-03-2019, 11:54 AM -
Ok, 1 more dumb question tonight and I will leave everyone alone. The new king pin locking bolts wont start through the axle. I thought the holes might be tapered, and the axle is installed backwards, but the locking bolts are not tapered. I am guessing I just need to ream or run the proper size drill through the holes to clean them out?04-28-2018, 09:11 PM -
I received the spindles from the estate sale and I am having new bushings pressed in. The venders will only sell the king pins as a pair. Would anyone have a single they would part with? We have signed up for the Rout 66 tour and will be covering between 6&7 thousand miles, half of it solo and would like to carry a spare. Thanks...03-27-2020, 09:26 AM -
I had to do some work on the brake actuator arms which involved removing the king pin locking bolts. They were a little stubborn but I got them out. They were somewhat beat up so I bought new pins. I installed a new one on the right side lining it up with the king pin slot. It went in ok but not quite all the way flush to the axle. It sits out about .130 inches. The old one was not flush either but...04-21-2021, 11:23 PM -
looking for advice on king pin repair/replacement. 1929. Have noticeable movement in both left and right. Is it common for bushings to wear and pin be ok? Is there a complete overhaul kit available ? Can this be performed at Home Shop or Definitely a Machine shop? Reason for asking is parts availability is non-existent for me ,everything has to be ordered and time frame is sometimes longer because...10-21-2019, 06:37 AM
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I'm going to install new king pins and bushings. was wondering if some of you have used the reamer you can buy from Snyders? If done correctly have the results been acceptable to you, or should I take them to a machine shop?10-28-2021, 12:07 AM -
My king pin retaining pins/bolts have been installed backwards. They were inserted from the rear of the axle and the nut/steering stop is on the front. I became aware of this when the inside of my left front tire rubbed on the brake rod during a tight turn. I figured I could just remove them and reinstall in the proper direction. I removed the nut and lock washer, reinstalled the nut loosely with...07-07-2020, 02:55 PM -
There were three types of Spindle Bolt Locking Pins.
Two types were round in shape when assembled to the front axle to lock the King Pin into place which also had a 1/2 round cut into it to accept the pin...The other had a "V" type notch that took an entirely different style of pin, which I think, locks the King Pin into place a little better than the previous types.
...10-29-2020, 03:45 PM
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