Chapter Overview
This chapter provides removal and installation proce-
dures for the hydraulic pumps and motors.
Personal Safety
Improper or incomplete maintenance/repair of a Rubber
Track Loader can be dangerous and may result in
machine damage, injury or even death.
Do not attempt to perform any type of repair or mainte-
nance on a Rubber Track Loader until you have read and
fully understood the information in this manual.
Refer to the Operation and Maintenance manual for
instructions regarding proper machine operation tech-
niques before operating any Rubber Track Loader.
Machine Preparation
Accidental machine starting can cause injury or even
death to personnel working on a Rubber Track Loader.
As a precaution, disconnect the battery cables from the
battery terminals, tape the battery clamps and remove
the key from the ignition switch prior to performing any
service work on a Rubber Track Loader.
Place a “Do Not Operate” tag prominently on the ma-
chine to inform personnel that the machine is being
worked on.
Prior to performing any type of service work on a
Rubber Track Loader, read and understand Chapter 1
(Product Safety) for personal safety information.
The hydraulic system fluid should be changed follow-
ing any hydraulic component service according
to the procedure described on page 4-16.
Removal and Installation
Removal and installation procedures are provided for
the following hydraulic components.
• Charge Pump
• Auxiliary Pump
• Tandem (Drive) Pump
• Drive Motor
Note: Procedures are provided for only those hydraulic com-
ponents listed above. However, exploded parts diagrams
exist in the PT-70 and PT-80 Parts manuals to serve as visu-
al aids in the removal and installation of other system com-
ponents.
Note: Refer to pages 3-1, 3-2 and 3-3 for additional motor,
pump and hydraulic system information.
Charge Pump
Removal
Remove any attachment, relax all actuators and make
sure the hydraulic oil is cool before removing any com-
ponents or lines. Hot or pressurized oil can cause per-
sonal injury.
NOTICE
Collect and contain liquids in suitable containers. Dispose of
all liquids according to local regulations and mandates.
During disassembly, plug and cap all hoses and fittings to
prevent system fluid loss or contamination.
11. Hydraulic Pumps/Motors
11-1
!WARNING!
!WARNING!
Required Tools
Screwdriver
Combination Wrench
Socket Wrench
!WARNING!
NOTICE
NOTICE
To Next Page
Loading...
