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The CJ3A Page Forum › Willys CJ-3A Technical Knowledge Base › Tech Talk › Rear axle end play?

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Rear axle end play? (Read 4638 times)

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:	Rear axle end play? 05/02/13 at 18:06:32	Print Post
	I've replaced the seals. bearings and cups, but even with the bearing cup flush with the axle tube flange outer surface there is almost 1/8" end play....what happened here? Is there a spacer or something inside the diff that fell out when I pulled the axle shaft? bearings and cups are direct replacement Timken..same part #..... Dana 44...
	« Last Edit: 05/02/13 at 18:27:46 by 1955CJ-5 »
	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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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: Rear axle end play? Reply #1 - 05/02/13 at 18:41:04	Print Post
	I think I answered my own question. I presently have only one axle installed... I need to have both axles in at the same time to adjust the end play as they push against each other in the center of the diff via spacers and who knows what else... I'll go put the other axle in and see if that doesn't improve the end-play.....

	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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garage gnome Flatfender Master 2013 Sponsor Member Offline Rustologist Posts: 1931 Location: Chester Joined: 02/16/12 Gender:	Re: Rear axle end play? Reply #2 - 05/02/13 at 18:45:13	Print Post
	I know mine don't move in or out at all.

	Nate in Western MA 1953 3A #3268, The Jalopy, '47 2A Wheelin' rig, '49 3A, #37071, unmolested, bone stock named Ted
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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: Rear axle end play? Reply #3 - 05/02/13 at 19:27:32	Print Post
	You will want both axles in place. Your end play will be controlled by shims that will sit behind the thicker bearing retainer plate. All of this will be set on the axle side of your brake backing plate. I use a very small amount of Permatex #2 sealant in between each of the shim and retainer surfaces during re-assembly.

	2-1949 CJ3A 1-1946 CJ2A
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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: Rear axle end play? Reply #4 - 05/02/13 at 19:43:04	Print Post
	Thanks everyone.....there were a few moments of frustration and wondering about the bearings and internal axle spacer....all is well now..! The end play is very small....001 to .006... I used a little copper spray a gasket between the shims, and a little Permatex on the gaskets on the outer oil seal.....It's going back together now.... Having both axles in place and the backing plate/shims installed is the key.... thanks again...
	« Last Edit: 05/02/13 at 20:04:56 by 1955CJ-5 »
	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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Comanche_County 3A Guru Offline Posts: 252 Joined: 09/11/11	Re: Rear axle end play? Reply #5 - 05/03/13 at 05:26:03	Print Post
	I totally hacked most of my rebuild, except for stuff like this....I care way more for the "go" than the "show". Yeah the axle shaft end play is somewhere around .001"-.005" IIRC. Maybe its the way the good lord wired me, but I do compulsively get nerdy on stuff like this. Now I'm wondering if I should have put some sort of sealer between the shims to prevent leaks as mentioned...?
	« Last Edit: 05/03/13 at 05:26:45 by Comanche_County »
	Georgia President of the International Flat Fender Club
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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: Rear axle end play? Reply #6 - 05/03/13 at 15:51:38	Print Post
	The shims fit over the outside of the cup, and the bearing retainer fits tight against it also...I don't think there is much of anything that directly contacts those plates and shims..and what is in there is grease. The inner seal is supposed to keep the gear oil out.... There was no evidence of any sealer on mine when I took it apart, and it hadn't been leaking.... But the copper seal helped hold everything together for assembly...

	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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