After unboxing, the hydraulic pump worked but the pneumatic motor did not. The diagram looked simple enough so I disassembled the air motor. The piston was very, very tight. I removed all the grease and cleaned the cylinder and piston, replaced with pneumatic oil, also primed the small pneumatic piston with oil, reassembled and then it worked. I didn't want to be bothered with returning the item. Pneumatic function is slower than expected at 150psi. Possibly because the factory air fitting is a larger diameter than what I have on all my other air tools.
T 
