What is this part?

Anonymous-0

Well-known Member
I have a 1950 TO-20. Hydraulics quit working the other day. I discovered the fluid to be milky from water. I drained all three areas,and this piece fell out the large center hole. What is it?
Also, can I flush with ATF.
 
If you are struggling with the picture posting, refer to "Tractor Talk".
"Posting pictures" by Super 99 10/28/12 [probably page 4 or 5 ]
refer to "El Toro" reply. Click the reference, There you have the procedure.
 
You can flush with any oil based fluid, but NEVER diesel or kerosene as it won't all drain out due to the shape of the bottom of the housings and when you add you new oil it will be diluted immediately. So ATF or engine flushing oil is OK but drain it when the oil is HOT as possible or you will not drain out as much of the crud as you could do, leave draining overnight. If you have water in the system then you should consider fitting a rubber boot to the bottom of the gear change lever to prevent more water getting in. You can get one from this site. The other place that water enters is at the bottom of the Draft Spring at the back of the seat, the felt seal is hard and worn after all these years. The usual part that becomes detached is the Tee Bar on the Control Valve, this fits between the two legs of the Control Fork that hangs down from the Top Cover and is connected to the Hyd Quadrant Lever, if it is no longer connected then it can't move the Control Valve. It is likely that the Pump will need to be dropped out as you can't always re-fit the Control Valve while the Pump is still in the tractor. It could also have an Oscillator attached which makes it even more of a problem. If you would like written information with pictures about repairing this problem, just email me and I will send it....John(UK)[email protected]
 
A third place I find water infiltration on the TO-20"s is the shift plate cover. If it has been removed and the paper seal was damaged or removed. Rain can collect in the roll between the cover and the steering colums and seep in. The TE"s with a solid cast cover/column shead water better.
 

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