Re: Farmall 400 Inter Axle Bearing

Posted by john d - you'll need cell phone, band aids, six-pack.... on July 25, 2001 at 19:32:14 from (205.188.199.38):

In Reply to: Farmall 400 Inter Axle Bearing posted by John In Iowa on July 24, 2001 at 21:51:38:

Well, maybe not ALL of those! Haven't done this on a 400. I have, however replaced an axle on an SM without removing that heavy trans cover plate, and also replaced the inner rear axle bearing on an H without taking the cover off. I'd think the procedure would be similar. I have some strong doubts that you can get the bearing out of there without pulling the axle and housing!

In both cases, we drained the oil, removed the PTO, and worked through that hole. In the case of the H, we removed the rear axle housing to get to the bearing. The wheel of the SM was off due to the broken axle. We removed the wheel of the H before starting on the rest of it. If you take the wheel off, plan ahead for what you're gonna do with it! Some help is a very good idea. The rear axle housing on an H is a lot heavier than it looks. The one on a 400 is going to be ALL you want to hold when that last bolt comes out! Again, have some help!

Removing the bull gear is not that big a problem, though you may have to "modify" the handle of whatever wrench you're trying to use in order to get that bolt loose. Putting a block between the head of that bolt and the one on the other side will let you force the axle out of the bull gear by backing out the bolt.

You will need the following:

1) Adequate and safe blocking for the tractor. Crib it up so it CAN'T even wiggle!
2) The usual variety of tools, including two or three different wrenches that can fit the head of the bolt in the end of the axle, and a pry bar of some sort to jiggle the bull gear into place when putting things back. That gear is HEAVY; don't put your fingers under it!
3) A trouble light or very good flashlite
4) A helper that you can COMMUNICATE with, and has some elementary mechanical knowledge in addition to understanding such instructions as "Up, down, left, right, turn, STOP, etc."
5) As much time (maybe a little more) to put it back together as you needed to get it apart.
6) Someone to blame (or dog to kick) when you get frustrated!

It's pretty straight-forward stuff. On the chance that the bearing has started to disintegrate, look for and remove all the pieces you can find in the bottom of the gear case. On some models of these old Farmalls, it is possible to upgrade to heavier 560 bearings when replacing them. Don't be surprised if this turns out to be practice for replacing the one in the other side! Good luck!

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