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Re: TO20 hydraulic lift mystery


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Posted by Steve@Advance on May 31, 2018 at 11:50:08 from (24.182.105.179):

In Reply to: TO20 hydraulic lift mystery posted by TO20D17 on May 31, 2018 at 10:18:12:

Are you sure it's a TO20?

Sounds like TO35 with the ground speed PTO engaged. Look at the left round cover, see if one position is labeled "ground speed". If in that position, shift it to the other.

Whatever it is, the PTO has to be turning for the hydraulic pump to work.

The oil level should be up to the bottom of the round inspection cover holes on each side under the seat. The dip stick should just be touching the oil, maybe an inch at most. Don't over fill it, you'll get oil in the clutch and brakes.

The original oil was GL1 90 weight mineral oil. That works in warm weather, but using it cold will slow the hydraulics down.
An alternative is 15w40 engine oil. You'll want to drain and refill, maybe flush it. Those are known for water getting in the cases. When you fill it, best to fill it through the inspection cover. If you fill it through the top transmission plug, pour it in very slowly. The oil has to transfer from the transmission to the rear cases. Fill it too fast oil will get in the clutch.


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