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Postby PAWPAW601 » Sun Apr 09, 2017 8:42 pm

I'm still going through the 1950 CUB found the gear box f/steering with nothing in it, was thinking abt filling it w/water to see where all the oil went. What is UR opinion? :lost:
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Postby John *.?-!.* cub owner » Sun Apr 09, 2017 9:36 pm

The shaft that comes down from the box and has the arm to move the tie rods has a seal on it that probably has worn out.
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Postby Glen » Sun Apr 09, 2017 11:30 pm

It's better for it to put in some oil, my opinion. The owner's manual says it holds 3/4 pint of 80W-90 gear oil.
Here are pages from the Cub parts manual showing the steering gear, the lower seal is number 22 in the pic. The upper seal, number 8, should be replaced too if you are taking it apart, helps keep rain out of it.
Below are the new seals at TM Tractor, they have gaskets for it too. :) ... 005-02.jpg ... 005-03.jpg ... 005-04.jpg

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Postby inairam » Mon Apr 10, 2017 7:55 am

The fill plug is supposed to have a vent hole to keep the steering box from becoming pressurized when it warms up. if the plug was replaced with a stand NPT plug or the hole clogged that may have contributed to the failure of the seal. Check the plug for the vent hole and make sure it is clear.
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