8n rear axle

[glenn kingery]

When I removed the rear axles you could see where they had been rubbing. I measured another axle I had and noticed that both out of this tractor were about 1/16 shorter. Is this a problem, should they be replaced? I don"t see any wear on the splines.

 

[R Geiger]

(quoted from post at 00:12:38 05/17/11) When I removed the rear axles you could see where they had been rubbing. I measured another axle I had and noticed that both out of this tractor were about 1/16 shorter. Is this a problem, should they be replaced? I don"t see any wear on the splines.

If yo are talking about the inside ends wearing against each other, I would just shim in accordance with FO-4 so they do not hit and you should be good to go. I don't think 1/16" will make any difference. IMHO

 

[glenn kingery]

Yes that is what I was talking about. Thanks!!

 

[Bob]

Glenn, the ends of the axle shafts continuously contact each other even when the axle bearings are properly shimmed to give the specified .002" to .008" of endplay.

'Cause of the fact the outer bearings are tapered roller, under the weight of the tractor they are continuously putting inward pressure on the axle shaft, butting them against each other, with a tiny bit of play left in the bearings.

When you are going straight with the tractor the two axles are turning at the same speed so the shafts are just butted together. As you are making a turn the axle shafts ARE rotating at different speeds, with the ends still butted together, making contact marks and slight wear over many hours of use.