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Subject: Rear axle end play 2n

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Tony C    Posted 05-07-2018 at 19:22:57 [URL] [DELETE]        [Reply] [No Email]  
  • Rear axle end play 2n
  • Good evening,

    In the course of refurbing a 1944 production 2N. Both brake levers were seized hard so I pulled the axles, backing plates etc. to make freeing the cross shaft easier and inspect the brakes. Lining are 75% or better. Cleaned everything and reassembled the right side Axle. It easily seated all the way into the side gears and bolted up flush to the housing with no interference.

    I now have a lot of end play .1250" or better. What did I miss? Bearing is good.

    I didn't have to beat anything apart. A couple of blows to release the drum from the hub as the adjusters were seized. Everything is now free and properly adjusted. There were no shims, only paper gaskets on the flange surfaces.

    Thanks for any help,

    Tony
    .

    Ozlander    Posted 05-08-2018 at 10:02:25 [URL] [DELETE]        [Reply] [Email]  
  • Re: Rear axle end play 2n
  • How much end play did you have before you started?

    Tony C    Posted 05-08-2018 at 10:53:37 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Brake levers were seized when I started. I managed to back the brakes off enough to get the drum/axle assembly out. So.... I have no idea how much was there when I started. The left side is apart and I can see that the axle is fully seated

    JMOR    Posted 05-08-2018 at 04:55:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • From afar, I would say two possibilities, bad bearings/installation, or ruined axles.

    Tony C    Posted 05-08-2018 at 11:06:15 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Bearings felt good when I turned them in the carrier. If the drum is pulled back and the axle turned, no noise roughness or drag is present. The lube is clean and a fair amount leaked out when I disassembled it. No contamination in the axle housing(s).

    Splines look good and engage smoothly to full depth.

    Is it possible the bearing carrier has moved on the shaft during disassembly?

    Ozlander    Posted 05-08-2018 at 11:04:17 [URL] [DELETE]        [Reply] [Email]  
  • Re: Rear axle end play 2n
  • Could be that nothing has changed.

    Tony C    Posted 05-08-2018 at 11:56:02 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Loosened everything and took a look. Reseated it and there is less than .020" end play now. No idea why it's better now. I Used what I should have initially, a dial indicator. I've got plenty of gasket material to shim it out.

    Thanks for the responses.

    Tony

    Bruce(OR)    Posted 05-08-2018 at 22:43:18 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Once you get it put together, jack up the rear. turn one wheel forward, the other should spin backwards. If not, it's too tight.

    Tony C    Posted 05-09-2018 at 09:08:55 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Hi Bruce,

    THanks, Excellent point.

    I have a pretty good feel for wheel bearing prelaods. I had class eight trucks for thirty years and got plenty of practice R&R'ing wheels and axles.. All the bearing manufactures had a torque spec for the inner (and outer) nuts. I followed their instructions.

    I called a local shop to see about getting gaskets to shim the axles. No got. Ordering would take a few days so I decided to make them. I've got a lifetime supply of gasket material of various thicknesses and applications. I make enough to finish the job.

    Tony

    JMOR    Posted 05-09-2018 at 11:35:21 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Actually, no 'pre-load' with these tractor axles, just the opposite, set up with slack.

    Tony C    Posted 05-09-2018 at 19:53:38 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • No end play either side. .020" shims took care of it. I guess I could test it with ultra sound at 1000 rpm. I don't want to Brinell the races from running too loose.

    BUT WAIT!!!

    It's a 22hp tractor with a 2.750" axle shaft and tapered roller bearings turning maybe forty RPM at road speed. (I didn't do the math to calculate the actual wheel RPM because I didn't research the gear ratios, engine top speed through third gear and the final drive.).

    I am going to install a couple of drive in ball oil cups close to the backing plate in the housing so I can prelube the bearings before I use the machine. (Yes I will grease the bit, so save those comments.) Probably will lose points if I show it, Oh well.

    Tony

    JMOR    Posted 05-09-2018 at 21:46:49 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • That makes no sense at all. You said you had less than 0.020 end play, then adding shims reduced that.??? Adding shims would only increase, not reduce!

    Tony C    Posted 05-09-2018 at 22:49:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • I suggest you reread one of my posts. "(I)Reseated it and there is .020" end play now. I have the material to shim it out" Which I did.

    The bearings,and axle, are not ruined as you suggested in an earlier response to my initial post.

    It is clear that I have offended one of the senior members of the FOrd 2n Mutual Admiration Society. I won't belabor you or other the members with questions or responses to other members questions in the future.

    And.......I am sorry if this post offends other forum members.

    I mean no disrespect.

    Good night,

    TOny C.

    Jim    Posted 05-10-2018 at 05:12:52 [URL] [DELETE]        [Reply] [Email]  
  • Re: Rear axle end play 2n
  • Please don't stop communicating as I was really enjoying the exchange. I felt it was a good time to learn something I didn't know. Let's all loosen up a bit. Thanks

    JMOR    Posted 05-10-2018 at 05:07:13 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • No offense here.........the info provided simply makes no sense to me. Maybe ignorance on my part

    Tony C.    Posted 05-10-2018 at 10:38:30 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Rear axle end play 2n
  • Good morning,

    No harm, no foul and no offence taken.

    It was a simple job. For some unknown reason I had too much end play in one axle which prompted the initial question. After I disassembled it to see what had happened I reassembled it and it went in easily with .020" end play. I have some .010 (+/- a couple as I used a guestimating digital caliper.) gasket material and made a couple gaskets. No end play, Everything is as it should be.

    Cosmic equilibrium and a steady stat environment has been restored.

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