The Stovebolt Site Forums The Parking Lot Big Bolts Schwartz pto driven hydraulic hoist

Does anybody know where I could get some tech information on a Schwartz pto driven hydraulic hoist. I have one under my one ton. I specifically need to know what kind of oil to use in it. It was low, so I put modern hydraulic fluid in it, but now it works even less good, so assume I have the wrong oil in it. I plan to drain it all, and don't want to play the "hit and miss" game with replacement oil.

Schwartz hydraulics are still being built and they still use the same hydraulic oil as 50 years ago. Your pump may just be worn out or the bypass valve may be weak.

FWIW I am pretty sure that Schwartz is no longer in business. Their product was primarily sold to the farm market and implement dealers. I haven't been able to find a listing for them and haven't seen one for many years. Someone may have purchased it and producing it under a new name.

Schwartz has been through several buyouts, but it still uses the same basic design. http://parkhurstmfg.com/

Parkhurst... well then I am right. Parkhurst is 98% a thing of the past. Rob died a few months ago and the last time I was there there was only an empty building at the old plant, doors wide open and birds taking over. I didn't go top plant 2.

Schwartz and later Parkhurst was very popular in Texas for many years. However bob tail field trucks are a dying thing. Combines are big enough to load semis these days. And there is very little grain in Texas any more. Its all cotton.

Yes, some combines have 600+ bu. hoppers. Everyone has gone to semi's and getting hard to find a quality grain body builder or any consequence.