Posted by Steve@Advance on March 17, 2019 at 19:23:11 from (66.169.147.211):
In Reply to: TO30 hydraulics posted by Rrutherford on March 17, 2019 at 17:12:54:
Water in the transmission is very common. It gets in around a bad shifter boot and condensation.
Be sure to remove all the drain plugs, I think there are 3, common reservoir for trans, hyd, differential housing.
It will hold about 6 gallons. Originally it had 90 weight mineral oil. (Not gear oil!) Or 15w40 engine oil will work better for cold climate use. Save the containers, because if you have to go in to fix the hydraulics you can use then to save the new oil.
If the new oil doesn't fix the hydraulics, (and it probably won't), take the side covers off, start it up, tell it to lift with a load on the arms, or chain them down. Watch (but don't reach in!) what happens.
Oil streaming down from the cylinder is bad seals (dripping is normal). Oil swirling below is a bad relief valve. Slow and jerky lift is bad pump valves.
A shop manual would be a good investment before going in there.
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