Bulletin HY13-1650-M1/USA
Piston Pump Service Procedure
P2 / P3 Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, Tennessee US
3
Definitions
NOTE: A NOTE provides key information to make a procedure easier or quicker to complete.
CAUTION: A CAUTION refers to procedure that must be followed to avoid damaging the Pump or other system
components.
WARNING: A WARNING REFERS TO PROCEDURE THAT MUST BE FOLLOWED FOR THE SAFETY OF THE
EQUIPMENT OPERATOR AND THE PERSON INSPECTING OR REPAIRING THE PUMP.
Disclaimer
This Service Manual has been prepared by Parker Hannifin for reference and use by mechanics who have been trained to
repair and service hydraulic pumps and systems on commercial and noncommercial equipment applications. Parker
Hannifin has exercised reasonable care and diligence to present accurate, clear and complete information and instructions
regarding the techniques and tools required for maintaining, repairing and servicing the complete line of Parker P2 & P3
Pump Units. However, despite the care and effort taken in preparing this general Service Manual, Parker makes no warran-
ties that (a) the Service Manual or any explanations, illustrations, information, techniques or tools described herein are
either accurate, complete or correct as applied to a specific Pump unit, or (b) any repairs or service of a particular Pump unit
will result in a properly functioning Pump unit.
If inspection or testing reveals evidence of abnormal wear or damage to the Pump unit or if you encounter circumstances not
covered in the Manual, STOP – CONSULT THE EQUIPMENT MANUFACTURER’S SERVICE MANUAL AND WARRANTY.
DO NOT TRY TO REPAIR OR SERVICE A PUMP UNIT WHICH HAS BEEN DAMAGED OR INCLUDES ANY PART THAT
SHOWS EXCESSIVE WEAR UNLESS THE DAMAGED AND WORN PARTS ARE REPLACED WITH ORIGINAL PARKER
REPLACEMENT AND SERVICE PARTS AND THE UNIT IS RESTORED TO PARKER SPECIFICATIONS FOR THE PUMP
UNIT.
It is the responsibility of the mechanic performing the maintenance, repairs or service on a particular Pump unit to (a) inspect
the unit for abnormal wear and damage, (b) choose a repair procedure which will not endanger his/her safety, the safety of
others, the equipment, or the safe operation of the Pump, and (c) fully inspect and test the Pump unit and the hydraulic
system to insure that the repair or service of the Pump unit has been properly performed and that the Pump and hydraulic
system will function properly.
Table of Contents
Definitions ...............................................................................................................................................................3
Design Features ...................................................................................................................................................4-5
Introduction .............................................................................................................................................................6
Troubleshooting Guide .............................................................................................................................................7
Troubleshooting Checklist ....................................................................................................................................8-9
Tools and Material Required for Servicing................................................................................................................9
Technical Information ....................................................................................................................................... 10-11
P2060 Service Instructions .............................................................................................................................. 13-22
P2075 Service Instructions .............................................................................................................................. 23-32
P2105 Service Instructions .............................................................................................................................. 33-42
P2145 Service Instructions .............................................................................................................................. 43-52
P3075 Service Instructions .............................................................................................................................. 53-62
P3105 Service Instructions .............................................................................................................................. 63-72
P3145 Service Instructions .............................................................................................................................. 73-82
Compensator Kits ............................................................................................................................................ 83-87
Torque Controls ..................................................................................................................................................... 88
Preparation for Disassembly ................................................................................................................................. 89
Disassembly & Inspection P2060-P2/P3075 .................................................................................................... 90-93
Assembly P2060-P2/P3075 ............................................................................................................................. 94-99
Disassembly & Inspection P2/P3105-145 .................................................................................................... 100-105
Assembly P2/P3105-145.............................................................................................................................. 106-111
Final Checks & Requirements ............................................................................................................................. 112
Tips for Maintaining the System.......................................................................................................................... 113
Offer of Sale ....................................................................................................................................................... 119