30 Regular final drive

OldReg · Nov 24, 2015

I'm new to this forum but have been monitoring for a while. Looks like this is the place to go for tractor advice. I have a 1930 Regular with a loose axle shaft/drive gear spline on the right side and I am trying to come up with a repair plan before it fails completely. Would it be easier to switch just the gear and axle or should I try to find a whole final drive assembly (gear housing and all) to switch? Is the Regular final drive identical to the F20? I use the tractor year-round and it has add-ons like live hydraulics, electric start, Heisler overdrive, foot brakes, etc. as well as a loader. It runs well and has new tires, so I'm hoping I can manage to get it repaired. Anyone else had this axle spline problem?

Tom Fleming · Nov 24, 2015

First off, welcome to the forum. Now, for your question. The F20 and your regular share the same final drive setup. However, my advise is that before you start anything, you determine what part has worn. Is it the spline on the shaft? is it the spline in the differential? is it gear lash in the bull or pinion gear? Is it a bad bearing? before I went and bought anything, I would determine exactly what is going on.

Then I would decide. In either case, the final drive has to be removed/partially disassembled. In the short run, just swapping a final drive is probably the least amount of work, but it won't solve a worn spline in the differential......

My $0.02 worth.

Oldiron29 · Nov 24, 2015

welcome OldReg when you say axle is loose? You meen the lower short axle? if that is loose I would think bearings. If the dust seal fails you can grind up bearings fast if dirt gets to it. If the spline is bad I would try to find another axle with better spline. oldiron29

wilson ind · Nov 24, 2015

Post for a fellow called nebraska kirk. As i recall he has older farmall parts.

OldReg · Nov 24, 2015

Thanks for the quick responses. A little more info...When I jack the tractor up with the right brake on, I can turn the wheel back and forth several inches without the axle drive gear (watched through the grease filler hole) moving. In other words, the gear and the wheel can move independently of each other for several inches.

Tom Fleming · Nov 24, 2015

Well, a certain amount of gear lash will allow the wheel to rotate a bit. I have a 1928 regular and a 1937 F-20, both have about 2-3 inches of movement. Bearings are fine, that is primarily gear lash.

Oldiron29 · Nov 24, 2015

Could be general wear on all the gear and splines after all it is 85 years old.
I guess you will have to get into it a little more and see what it looks like.
oldiron29

RBoots · Nov 24, 2015

Welcome OldReg! Lots of good
advice here. Where are you
at? I have a whole regular
for parts if you find you
need something. I believe it
is an NT, can't remember,
don't pay much attention to
it. I'm in MI.

Ross

Tom Fleming · Nov 24, 2015

Well, the brakes act on the drive pinion, so what you are seeing is gear lash and possible wear on the bull gear spine to the axle shaft.

If it isn't more than a few inches, I wouldn't get too worked up about it. If the bearings seem tight, then leave it be.

Other's may chime in, but that is my take on it.

Old-F20 · Nov 24, 2015

with the brake set you have 3 areas in the drivetrain that can have wear and if they all do then you add up all the wear and you end up with slop.

its 70+ years old. its gonna have a little bit of wear

OldReg · Nov 24, 2015

Thanks all for your responses. Sounds like it may not be quite as bad as I thought it was. Think I'll try and go easy on it while moving snow this winter (I'm in Iowa) and look for parts come spring. Or maybe shop for an H.

30 Regular final drive

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