HY13-1597-01/US
3Z Motor Service Procedure
3ZG Series
Parker Hannifin Corporation
Hydraulic Pump & Motor Division
Greeneville, TN 37745 US
3
Definitions ................................................................................................................................................................ 3
Introduction ............................................................................................................................................................. 4
Troubleshooting Guide ............................................................................................................................................ 5
Troubleshooting Checklist ....................................................................................................................................... 6
Conversions ............................................................................................................................................................ 7
Exploded Assembly View ........................................................................................................................................ 8
Disassembly & Inspection ................................................................................................................................. 9–14
Assembly ......................................................................................................................................................... 15–21
Offer of Sale .................................................................................................................................Inside Back Cover
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 Transmission 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 TRANSMISSION.
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 motors and systems on commercial and non-commercial 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 Integrated
Hydrostatic Transmission Units. However, despite the care and effort taken in preparing this general Service Manual,
Parker makes no warranties 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 Transmission unit, or (b) any repairs or
service of a particular Transmission unit will result in a properly functioning Transmission unit.
If inspection or testing reveals evidence of abnormal wear or damage to the 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 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 UNIT.
It is the responsibility of the mechanic performing the maintenance, repairs or service on a particular Transmission 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 Transmission, and (c) fully inspect and test the unit and the
hydraulic system to insure that the repair or service of the unit has been properly performed and that the Transmission will
function properly.
Table of Contents
