Parker DENISON PVP140 series PVP16 PVP23 PVP33 PVP41 PVP48 PVP60 PVP76 PVP100 PVP3336R2H21 high pressure Hydraulic piston Pump.
Pump Will Not Prime ∆ Pump should prime within 30 seconds. If it does not, STOP. ∆ Check for proper drive rotation. ∆ Make sure pump shaft is turning (i.e. key at coupling hubs is engaged). ∆ Make sure reservoir is full. ∆ Check for major sources of a suction leak (vent plug open, shaft seal missing (PAVC), flange not tight, pinched O-Ring at flange or pump housing. Cannot Build Any Pressure ∆ Make sure pump is primed. ∆ Check alignment, especially on PAVC pumps without "9" option. ∆ Make sure systems is not an open circuit. A pump produces flow, not pressure. It can only limit pressure when the system requirement is higher than the pump compensator setting. Can Only Build A Few Hundred PSI ∆ Compensator is backed all the way out. ∆ The remote or load sense line is vented. ∆ Control orifice or spool is plugged. ∆ Incorrect compensator spool (PVP). ∆ Pressure control dart is lodged open. ∆ Torque control plug is missing (PAVC). Pump Will Not Compensate ∆ Differential spring over-compressed (i.e. spring guide dislocated). ∆ Control drain line blocked (PAVC). ∆ Pressure control stem vent hole is plugged. ∆ Control spool travel is hindered. ∆ Control orifice is missing (PAVC). ∆ Saturation orifice is missing in load sense circuit
