Toro 22306, 22306G, 22307, 22321, 22321G Service Manual
...
Sitework Systems
Dingo TX420, TX425
Series
Service Manual
Form No. 492-9187
ABOUT THIS MANUAL
This service manual was written expressly for Toro service technicians. The Toro company has made every effort to
make the information in this manual complete and correct.
Basic shop safety knowledge and mechanical/electrical skills are assumed. The Table of Contents lists the systems
and the related topics covered in this manual.
For service information on drive systems, please refer to the Hydro-Gear BDP-10A/16A/21L Pump service manual
(form no. 492-4789), Hydro-Gear P Series Pump service manual (form no. BLN 52503) and Parker-Ross TF wheel
motor service manual (form no. 492-4753). For information specifi c to the engines used on this unit, refer to the
appropriate engine manufacturer’s service and repair instructions.
Units covered on in this manual are: TX420 model years 2000 - 2008
TX425 model years 2002 - 2008
The manual may also be specifi ed for use on later model products.
The hydraulic power system is precision machinery. Maintain strict cleanliness control during all stages of service
and repair. Cover or cap all hose ends and fi ttings whenever they are exposed. Even a small amount of dirt or other
contamination can severely damage the system.
We are hopeful that you will fi nd this manual a valuable addition to your service shop. If you have any questions or
comments regarding this manual, please contact us at the following address:
The Toro Company
LCB Technical Services
8111 Lyndale Avenue South
Bloomington, MN 55420
The Toro Company reserves the right to change product specifi cations or this manual without notice.
Copyright© All Rights Reserved
©2008 The Toro Company
Rev. 000
REVISIONS
8/01/08Revision 000 . . . . . . . . . . . . .
ii Rev. 000 Dingo TX420, TX425 Series Service Manual
TABLE OF CONTENTS
SAFETY INFORMATION
General Information ......................................................................................................................1-1
Think Safety First..........................................................................................................................1-1
SPECIFICATIONS
General Specifi cations..................................................................................................................2-1
Dimensions ...................................................................................................................................2-1
Periodic Maintenance Items .........................................................................................................2-2
Performance TX420 .....................................................................................................................2-2
Performance TX425 .....................................................................................................................2-2
Hydraulic System TX420 ..............................................................................................................2-3
Hydraulic System TX420 cont. .....................................................................................................2-4
Electrical System TX420 ..............................................................................................................2-4
Track System TX420 ....................................................................................................................2-4
Hydraulic System TX425 ..............................................................................................................2-5
Hydraulic System TX425 cont. .....................................................................................................2-6
Electrical System TX425 ..............................................................................................................2-6
Track System TX425 ....................................................................................................................2-6
Torque Specifi cations ...................................................................................................................2-7
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series) ..................................2-8
Standard Torque for Dry, Zinc and Steel Fasteners (Metric Series) ...........................................2-9
Other Torque Specifi cations .....................................................................................................2-10
Equivalents and Conversions ...................................................................................................2-11
U.S. to Metric Conversions .........................................................................................................2-12
MAINTENANCE
Recommended Maintenance Schedule........................................................................................3-1
Greasing the Traction Unit ............................................................................................................3-2
Maintaining the Road Wheels.......................................................................................................3-3
Hydraulic Reservoir Tank ..............................................................................................................3-4
Location .................................................................................................................................3-4
Checking the Hydraulic Fluid .................................................................................................3-4
Replacing the Hydraulic Filter.......................................................................................................3-5
Changing the Hydraulic Fluid .......................................................................................................3-6
Checking the Hydraulic Lines .......................................................................................................3-7
Vents - Hydraulic Tank ..................................................................................................................3-7
Engine Servicing...........................................................................................................................3-8
Air Filter ........................................................................................................................................3-9
Fuse Block ....................................................................................................................................3-9
Belt, Hydrostatic Pumps .............................................................................................................3-10
Track Inspection .........................................................................................................................3-10
Battery Maintenance...................................................................................................................3-11
T esting ........................................................................................................................................3-12
Special Tools ..............................................................................................................................3-12
iiiDingo TX420, TX425 Series Service Manual Rev. 000
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