OILGEAR PVV PUMPS

PVV 200 Performance Curves

PVV 200 Noise Curves

PVV 200 Inlet Curves

PVV 250 Performance Curves

PVV 250 Inlet Curves

Front HousingControl Cover Main Housing Rear Cover Front Housing Control Cylinder Middle Housing Cylinder Wear Plate Port Plate Rear Housing Retainer Driveshaft & Bearing Assembly Control Pistons Swashblock & Wear Plate Hydrodynamic Bearing Cylinder Barrel

Inboard Shaft SealSwashblock Pivot Pins Saddle Bearings Auxiliary Case Drain Rotating Group Bearing

Hardened Steel Cylinder Wear Plate

CounterclockwiseClockwise PVV 200/250 Port Plates Compression Slots De-compression Orifices

Driveshaft & Bearing Assembly Driveshaft Retainer Shaft Seal Retainer

Saddle Bearings Middle Housing Valve Plate Front Housing Control Mounting Surface Piston & Shoe Assemblies, Harness Plate, and Shoe Retainer

Piston & Shoe Assemblies Shoe Retainer Swashblock Wear Plate Anti Rotation Pin

P-1NN Control Circuit

P-1NN Control Diagram

P-1NN Control Diagram Compensated

The Do’s Double check electric motor for proper shaft rotation.

The Do’s Double check electric motor for proper shaft rotation. Fill the pump case prior to start-up.

The Do’s Double check electric motor for proper shaft rotation. Fill the pump case prior to start-up. Be sure the inlet line is a minimum of 1-2 pipe diameters off the bottom of the reservoir and unrestricted.

The Do’s Double check electric motor for proper shaft rotation. Fill the pump case prior to start-up. Be sure the inlet line is a minimum of 1-2 pipe diameters off the bottom of the reservoir and unrestricted. Arrange case drain line, so the pump case remains full of fluid.

More Do’s Case drain lines should be:

More Do’s Case drain lines should be: a. Full sized

More Do’s Case drain lines should be: a. Full sized b. Separate

More Do’s Case drain lines should be: a. Full sized b. Separate c. Unrestricted

More Do’s Case drain lines should be: a. Full sized b. Separate c. Unrestricted 1. No heat exchangers

More Do’s Case drain lines should be: a. Full sized b. Separate c. Unrestricted 1. No heat exchangers 2. No filters

More Do’s Case drain lines should be: a. Full sized b. Separate c. Unrestricted 1. No heat exchangers 2. No filters 3. No flow meters

More Do’s Case drain lines should be: a. Full sized b. Separate c. Unrestricted 1. No heat exchangers 2. No filters 3. No flow meters d. Terminate below the fluid level in the reservoir

Vertically Mounted Pumps Case drain line should be higher than the highest point of the pump.

Vertically Mounted Pumps Case drain line should be higher than the highest point of the pump. We recommend that a purge tube be installed to allow trapped air in the pump case to escape. This tube should be plumbed below fluid level to prevent a vacuum break.

More Do’s Ensure proper fluid viscosity.

More Do’s Ensure proper fluid viscosity. a. Minimum fluid viscosity for PVV pumps is 80 SSU.

More Do’s Ensure proper fluid viscosity. a. Minimum fluid viscosity for PVV pumps is 80 SSU b. Maximum fluid viscosity is 2000 SSU

More Do’s Ensure proper fluid temperature

More Do’s Ensure proper fluid temperature a. Minimum operating temperature for PVV pumps is -20°F

More Do’s Ensure proper fluid temperature a. Minimum operating temperature for PVV pumps is -20°F b. Maximum operating temperature is 160 ° F

More Do’s Ensure proper fluid temperature a. Minimum operating temperature for PVV pumps is -20°F b. Maximum operating temperature is 160 ° F c. Maximum case drain operating temperature 210 ° F

Don’ts Do not restrict inlet lines.

Don’ts Do not restrict inlet lines. a. No inlet filters or strainers.

Don’ts Do not restrict inlet lines. a. No inlet filters or strainers. b. Full sized

Don’ts Do not restrict inlet lines. a. No inlet filters or strainers. b. Full sized c. Separate

More Do’s Do not restrict inlet lines. a. No inlet filters or strainers. b. Full sized c. Separate 1. On multiple pump systems, inlet lines should be a minimum of 8 pipe diameters apart. This helps prevent cavitation caused by flow vortexes.

WARNING Do not operate the pump at neutral or low pressure (less than 200 psi) for long periods of time unless the unit is supercharged, or is equipped with a case flushing circuit.

Filtration Oilgear recommends the use of a 10µ filter with a ß 10 ratio of 4 or better.

Filtration Oilgear recommends the use of a 10µ filter with a ß 10 ratio of 4 or better. PVV’s have an allowable ISO rating of 18/15. Pressure Filter or

Filtration Oilgear recommends the use of a 10µ filter with a ß 10 ratio of 4 or better. Pressure Filter or Return Line or

Filtration Oilgear recommends the use of a 10µ filter with a ß 10 ratio of 4 or better. Pressure Filter or Return Line or Off Loop (kidney loop) Filtration System

Filtration Off line filtration is more efficient than in line or pressure filtration. a. maintains a constant flow across the filter element, which increases filter efficiency.

Filtration Off line filtration is more efficient than in line or pressure filtration. a. maintains a constant flow across the filter element, which increases filter efficiency. b. allows for the capability of adding a heat exchanger, to help maintain a constant system temperature.

Start-up Loosen a pressure connection or use an automatic air bleed valve.

Start-up Loosen a pressure connection or use an automatic air bleed valve. Back off the relief valve setting.

Start-up Loosen a pressure connection or use an automatic air bleed valve. Back off the relief valve setting. Vent the remote compensator relief valve.

Start-up Loosen a pressure connection or use an automatic air bleed valve. Back off the relief valve setting. Vent the remote compensator relief valve. Jog the electric motor several times, until oil is visible at the loosened pressure connection.

Axiom Axial Piston Pumps Make Lousy Air Compressors.

Start-up Tighten the loosened pressure connection.

Start-up Tighten the loosened pressure connection. Start the electric motor.

Start-up Tighten the loosened pressure connection. Start the electric motor. Let the unit run for a couple of minutes, to purge the air from the rotating group.

Start-up Tighten the loosened pressure connection. Start the electric motor. Let the unit run for a couple of minutes, to purge the air from the rotating group. Close the remote compensator vent.

Start-up Tighten the loosened pressure connection. Start the electric motor. Let the unit run for a couple of minutes, to purge the air from the rotating group. Close the remote compensator vent. Set the system relief valve 200 psi above the main pump compensator.

Start-up Set main pump compensator 200 psi above the maximum system pressure. This will allow the the pump to compensate, rather than blowing the system relief if the remote compensator fails closed.

Remote Pressure Comp Connection Case Drain C-Face Mount Set 200 PSI Above Max. System Pressure Maximum Volume Stop Case Purge Tube

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