Parker PV140 User Manual

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parker.com/pmde

Effective: December 20, 2018

Supersedes: July 1, 2010

Bulletin MSG30-3245-INST/UK

Installation and

start-up information

PV series

Design series ≥ 44, PVplus

Variable displacement

axial piston pump

Table of Contents

Questions and Answers:

C
Christine SmithAug 16, 2025
What to do if my Parker Water Pump drive motor does not turn?
- J
  Jamie MillerAug 16, 2025
  If the drive motor of your Parker Water Pump isn't turning, it could be due to a few reasons. First, check the motor connections and the electrical power supply to ensure they are correctly connected and functioning. It's possible that one of the three phases has failed. If the motor connections and power supply are fine, the pump may be mechanically blocked, in which case you should send the pump to the factory for service.
T
Tom DonaldsonAug 20, 2025
Why Parker PV140 Water Pump drive motor turns, but pump does not turn?
- J
  jennifer33Aug 20, 2025
  If the drive motor of your Parker Water Pump is turning but the pump itself isn't, the coupling might not be mounted correctly. Check the coupling assembly and correct it.
R
Ryan HorneAug 25, 2025
What to do if Parker PV140 drive motor turns and pump turns, but there is no output?
- F
  faithwilliamsAug 25, 2025
  If the drive motor and pump of your Parker Water Pump are both turning, but there's no output, consider these possibilities: Ensure the direction of motor rotation is correct by changing it if necessary. Check that the fluid reservoir is filled to the required level and increase the suction pipe length if needed. Inspect the suction line for blockages and open any valves in the line, ensuring they have electrical indicators. Also, check the suction filter. Seal the suction line to prevent air from entering. Unload the pressure port and system before starting, and bleed air from the pressure line if the pressure line/system cannot bleed air out.
T
Teresa PenaAug 27, 2025
How to fix unstable compensator on Parker PV140 Water Pump?
- D
  Daniel WestAug 28, 2025
  To address an unstable compensator in your Parker Water Pump, consider these steps: First, clean the hydraulic system and compensator valve, as the compensator spool might be sticking due to hydraulic fluid contamination. Next, adjust the compensator differential pressure to the required setting, as it may have changed (becoming too low or too high). Ensure the correct pilot orifice and pressure pilot valve are selected as recommended. If dealing with a dynamic critical system, such as a pressure compensator combined with a pressure reducing valve, use a remote pressure compensator instead of a standard one, and install an orifice in the load sensing line remote from the compensator, as close as possible to the load sensing valve.
D
Dawn HoffmanAug 31, 2025
What to do if Parker PV140 does not compensate?
- T
  Tiffany RodriguezAug 31, 2025
  If your Parker Water Pump isn't compensating, check these potential issues: Ensure there is an orifice Ø 0.8 mm in the load sensing line to compensator code MFC. Verify that a pressure pilot valve is connected to the compensator and that the valve opens as required. Confirm that the load sensing line is connected downstream (actuator side) of the load sensing valve. Also, ensure that the pump outlet pressure is at least 15 bar, as the bias spring in the pump cannot be compressed otherwise.
M
Madison RowlandSep 4, 2025
Why Parker PV140 Water Pump drive motor only turns at slow speed?
- M
  Michael MartinezSep 4, 2025
  If the drive motor of your Parker Water Pump only turns at slow speed, it could be due to improper motor selection or a hydraulically blocked pump. Start the pump at an unloaded system and consider using a motor with more horsepower. Also, check the function of the pump compensator and start the pump at an unloaded system.
K
Krista FarmerSep 8, 2025
What to do if Parker PV140 does not upstroke?
- A
  Alexander JohnsonSep 8, 2025
  If your Parker Water Pump does not upstroke and sticks at zero displacement, it could be due to a blocked compensator or an interrupted cable. Clean the hydraulic fluid and compensator valve, as the compensator might be blocked due to contamination. Check the wiring to the LVDT or proportional solenoid to ensure the cable is intact; replace it if necessary.

Parker PV140 Specifications

General

Brand	Parker
Model	PV140
Category	Water Pump
Language	English

Summary

Installation and Start-up Procedures

Component Inspection and Cleanliness

Visual inspection for damage and strict cleanliness protocols are vital.

Pump and Piping Installation

Guidelines for mounting, suction, pressure, and drain port connections.

Port Positions and Flushing

Diagrams of port positions and use of flushing ports for lubrication.

System Preparation

Drive input, electrical checks, reservoir, fluid filling, and filtration requirements.

Pump Displacement Adjustment

Adjustment Mechanism and Procedure

How to adjust the displacement limiter screw and lock nut.

Factory Settings and Limitations

Notes on factory settings and adjustments to reduce displacement.

Pressure Compensator Functions

Standard MMC Compensator

Adjusting compensating pressure and differential settings.

MM1 Compensator with D03 Interface

Mounting interface for pilot valves and compatibility.

MMZ Compensator for Accessories

Designed for accessory mounting without integrated pilot cartridge.

Remote Pressure Compensator (MR*)

Features a remote control port for external pilot valves.

Load Sensing Compensator (MF*)

Controls pump output flow based on load sensing signals.

Two Spool Compensator (MT*)

Combines flow and pressure compensation via dual spool design.

Horse Power Compensator (L, C)

Maintains constant input horse power through a pilot cartridge.

Compensator Accessories and Options

Pressure Relief Pilot Valve (PVAC1P)

Valve for adjusting pump compensating pressure.

Multiple Pressure Pilot Systems (PVAC2*)

Systems for selecting between different pressure settings.

Troubleshooting Common Issues

Drive Motor and Pump Rotation Problems

Diagnosing motor not turning, slow speed, or wrong rotation.

Pump Output and Pressure Failures

Resolving issues like no output, low pressure, or air ingress.

Compensator Malfunctions

Troubleshooting compensator blockage, instability, or incorrect settings.

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