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Kingpin Bearing Help (Read 6840 times)

LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Kingpin Bearing Help 04/26/17 at 21:21:37	Print Post
	I am not sure what I did wrong! I just tried to set the preload with my new kingpin bearings. Everything seamed to go together just fine and after I bolted and torqued the caps down the preload seemed to be good at about 14 lbs. I unbolted everything so I could put the seals on and when I took a look at the bearings they were damaged. It looks like I didnt have them set perfectly before I tightened everything up. Has anyone ever had this happen before?? Bearings were brand new from Walcks. Regardless it looks like I'm ordering new bearings

	IMG_3164.JPG ( 3498 KB \| 155 Downloads ) IMG_3165.JPG ( 3291 KB \| 75 Downloads )
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specialty 3A Guru Offline 1952 CJ3A Posts: 254 Location: Edinburg VA. Joined: 11/23/15 Gender:	Re: Kingpin Bearing Help Reply #1 - 04/27/17 at 15:49:00	Print Post
	It looks like they were not seated right. Been awhile since I have been in there so one of these guys will know for sure. Sometimes it takes a little time for a reply so hang in there. I think I got my bearings, I think they were national bearings, at Advance auto and used a promo code on them. Might save you a few bucks.


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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #2 - 04/27/17 at 16:16:55	Print Post
	Thanks for the reply. That's what I'm thinking - not seated right. I hope someone can chime in on how to tighten the kingpin caps down the right way so this doesn't happen again!


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specialty 3A Guru Offline 1952 CJ3A Posts: 254 Location: Edinburg VA. Joined: 11/23/15 Gender:	Re: Kingpin Bearing Help Reply #3 - 04/27/17 at 16:29:45	Print Post
	If I recall they just slip in by hand. Did you tap or hammer them in?


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1955CJ-5 Flatfender Master 2013 Sponsor Member 2016 Sponsor Member 2015 Sponsor Member Offline It wasn't always green.... Posts: 2338 Location: Boise, idaho Joined: 12/18/12 Gender:	Re: Kingpin Bearing Help Reply #4 - 04/27/17 at 17:08:44	Print Post
	My only thought is maybe the outer race/cup is not fully seated, and so the bearing is sitting a little too high when you tighten the caps... This is a picture of one that came out of my CJ-5.....but it had been in there for 50 or 60 years... Do you have pictures of the knuckle?
	« Last Edit: 04/27/17 at 17:31:41 by 1955CJ-5 »
	2015_0814modelajeep0723.JPG ( 892 KB \| 72 Downloads ) 1955 CJ-5, A friend for 55 years....1951 CJ-3A, a new addition. 1929 Model A Ford Closed Cab Pickup...
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athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Kingpin Bearing Help Reply #5 - 04/27/17 at 19:09:39	Print Post
	The type of damage to the new bearing is a bit of a head scratcher. There are old style knuckles and a newer style knuckle. The old style requires shims on both the top and bottom king pins. The newer style only requires shims on the upper king pin. There is a post here somewhere that shows the differences quite nicely. I can't find it right now. Can you post a photo of the lower king pin area on your knuckles?

	2-1949 CJ3A 1-1946 CJ2A
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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #6 - 04/27/17 at 22:08:23	Print Post
	I'm pretty sure I have the old style. I researched this extensively before I started so I wouldn't screw up . There were shims on both the top and bottom when I took it apart. I used the same shims as a starting point when I reassembled. Could it be that I don't have enough shims. Attached are pics of the raced - pretty sure they are all the way seated. I will post a pic of the knuckles when I get home.

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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #7 - 04/27/17 at 23:51:22	Print Post
	Hawk - here are the picks of the bottom of the knuckle

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athawk11 YaBB Administrator Owner Member 2012 2016 Sponsor Member 2015 Sponsor Member Offline 1949 CJ3A Posts: 2771 Location: Arvada, Colorado Joined: 01/26/11 Gender:	Re: Kingpin Bearing Help Reply #8 - 04/28/17 at 03:11:58	Print Post
	You're right. That is the older style. Load it up with extra shims. Tighten each kingpin nut a little at a time until you reach the recommended torque. Test, then remove shims, tighten, test remove etc...until you reach the recommended foot pounds.

	2-1949 CJ3A 1-1946 CJ2A
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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #9 - 04/28/17 at 10:40:29	Print Post
	I read over on the 2a page that the kingpins are torqued down to 55-65 foot pounds. Seems a bit high? Is this correct?


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1955CJ-5 Flatfender Master 2013 Sponsor Member 2016 Sponsor Member 2015 Sponsor Member Offline It wasn't always green.... Posts: 2338 Location: Boise, idaho Joined: 12/18/12 Gender:	Re: Kingpin Bearing Help Reply #10 - 04/28/17 at 14:52:49	Print Post
	That does seem high....the head bolts are only torqued to 60-70 ft lbs.. They are 5/16 aren't they? There is a table here for standard bolt torque values...lots of others on the net too... http://www.engineersedge.com/torque_table_sae_ftlbs.htm

	1955 CJ-5, A friend for 55 years....1951 CJ-3A, a new addition. 1929 Model A Ford Closed Cab Pickup...
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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #11 - 04/29/17 at 01:30:30	Print Post
	I was referencing this page - seems legit http://www.cj-2a.com/techtips/specs/torques.html


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1955CJ-5 Flatfender Master 2013 Sponsor Member 2016 Sponsor Member 2015 Sponsor Member Offline It wasn't always green.... Posts: 2338 Location: Boise, idaho Joined: 12/18/12 Gender:	Re: Kingpin Bearing Help Reply #12 - 04/29/17 at 04:00:56	Print Post
	Well, you can try it. Some of the early jeeps had a one piece steering arm/king pin cap, which is what they might be referring to....

	s-l225.jpg ( 6 KB \| 81 Downloads ) 1955 CJ-5, A friend for 55 years....1951 CJ-3A, a new addition. 1929 Model A Ford Closed Cab Pickup...
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Oilleaker1 Flatfender Enthusiast Offline Automotive Archeology/ Jeep Disease, Green Diseas Posts: 195 Location: Black Hills, SD Joined: 02/02/14	Re: Kingpin Bearing Help Reply #13 - 04/29/17 at 12:08:11	Print Post
	You hit it with the cap bolts. There are two that are longer than the others. The long ones hold the guard on top. Easy mistake to make. Oilly


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LKap Project Jeep Offline Still Plays With Jeeps Posts: 44 Location: SE Michigan Joined: 01/06/17 Gender:	Re: Kingpin Bearing Help Reply #14 - 04/30/17 at 02:30:35	Print Post
	How would the bolts hit the bearing? I checked and there are a couple that are a little longer. Do I need to test the preload with the guard????


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