TO 20 axle clearance

37chief · Jan 27, 2013

First thanks for all the information you folks have given me on my TO 20. I think this will be the last thing I need. What is the distance between the axle ends? I have .003 on one side, and .002 on the other. Don't know why the are different, but they are. Think if I assemble it dry it will not leak/ Thanks Stan

Bruce(OR) · Jan 27, 2013

Not too sure I understand this. Clearnce between the axle ends. ?
I must be dense.
Are you talking about the amount the axle can be pulled away from the tractor when all bolted up?
Well shoot! Got the book open already in front of me. Musta been tooo lazy to put it away.
X
0.002 - 0.008 clearance between inner ends of the axle shafts. Zero clearnce may cause the inner ends of the axle shafts to weld together. Excessive clearance will result in damaged axle shaft oil seals.
X
Now if you have installed Sure Seals installed, then you will not have an issue with excessive clearance causing damage to the oil seals as the Sure seals are installed in the axle shaft retainer which is held in place by the axle shaft collar which has set your bearing preload.
Time to put this book away.
Gotta find me a round-tuit...
One of these days I will finish the wife"s TO-20.

Jason S. · Jan 27, 2013

It will cause more damage than just oil seals leaking...I done some looking and here are John(UK) words on it....

You can get the shims from a Sparex dealer as part S42622 these are .010" The MF part number is 181-232M1, you can also get some from later models that will fit. 35/135"s and any tractor types with same drum brakes, these shims will fit but they will have 12 holes instead of the 6 holes for the grey tractors. Do Not use paper gaskets as a substitute and do not use any sealant or the Hub will move on the axle and it will leak again. Paper gaskets should be fitted one each side of the brake back plate and the shims go next to the Rear axle housing. It is important that there are sufficient shims or the bearings will be overloaded when you tighten the Hubs to the tractor.Too many and it will knock as the bearings will be too loose and in severe cases it could knock the collars off the shaft..John
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37chief · Jan 27, 2013

Thanks Bruce. That is the number I wanted. .002 to .008 This is what I am refering to as the distance the axle ends can keep from touching each other. I measured it with my dial indictor, so I am within specs. My axle's had no clearance, the axle ends were shinny, indicating to me they were really bumping each other. I added .010 to get it within specs. Stan

TO 20 axle clearance

37chief

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Bruce(OR)

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Jason S.

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37chief

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