You answered a question on a 601 ford loosing prime on the hydraulic pump not long ago. I have replaced the seal, the wobble shaft as it had a groove worn in it. Replaced needle bearing and wobble shaft bearing. I also replaced the orings on the transmission housing and the 2 at the pump. I have the accessory plate turned around and a pressure gauge in the port. When I start the tractor and loosen the bleed screw on the pump . The pump picks up prime. when I tighten the plug the pressure comes up to around 1900 to 2000 psi and within 10 to 15 seconds will drop back to zero. To get the pressure to come back up I have to shut off engine and start the bleed process again. Do you think the relief valve item 94 in drawing fo269 in the I T manual could be sticking open or should I be looking else where.
Thanks
Dale
Thanks
Dale