DRESSTA TD-25M EXTRA User manual

SMTD25MEX07/1E
SERVICE MANUAL
TD-25M
EXTRA
SERIAL NUMBERS 75001 AND UP
DRESSTA

THIS MATERIAL IS PROPRIETARY TO DRESSTA CO. LTD. AND NOT TO BE REPRODUCED,
USED, OR DISCLOSED EXCERPT IN ACCORDANCE WITH WRITTEN AUTHORIZATION
FROM DRESSTA CO. LTD.
IT IS OUR POLICY TO IMPROVE OUR PRODUCTS WHENEVER IT IS POSSIBLE AND PRACTICAL
TO DO SO. WE RESERVE THE RIGHT TO MAKE CHANGES OR ADD IMPROVEMENTS AT ANY
TIME WITHOUT INCURRING ANY OBLIGATION TO INSTALL SUCH CHANGES ON PRODUCTS
SOLD PREVIOUSLY.
DUE TO THIS CONTINUOUS PROGRAM OF RESEARCH AND DEVELOPMENT, PERIODIC
REVISIONS MAY BE MADE TO THIS PUBLICATION. IT IS RECOMMENDED THAT CUSTOMERS
CONTACT THEIR DISTRIBUTOR FOR INFORMATION ON LATEST REVISION.
CONTENTS
1. INTRODUCTION
5. STEERING
6. COOLING SYSTEM
7. DRIVE TRAIN
7B. HYDRAULIC TORQUE CONVERTER
7C. TRANSMISSION
7E. STEERING DRIVE
7F. FINAL DRIVE
8. ELECTRICAL
9. FRAME
10. HYDRAULICS
10A. PUMPS
10B. VALVES
10C. CYLINDERS
10E. RESERVOIRS AND FILTERS
12. POWER
13. SUPERSTRUCTURE
14. SUSPENSION
15. TRACKS OR WHEELS
17. MOUNTED EQUIPMENT

SECTION 1
INTRODUCTION

INTRODUCTION SECTION 1
DRESSTA TD-25M EXTRA
CONTENTS
SAFETY PRECAUTIONS
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. BEFORE STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. WHEN PARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SERVICE INFORMATION
6. SERIAL NUMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7. INSPECTION AND REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8. ELECTRONIC CIRCUITS PROTECTION DURING WELDING AT THE MACHINE . . . . . . . . 12
LOCTITE USAGE
9. LOCTITE USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
STANDARD TORQUES
10. BOLT IDENTIFICATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
11. TORQUE VALVES FOR STANDARD FASTENERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
12. SPLIT FLANGE CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13. HYDRAULIC TUBES AND FITTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
14. HOSE CLAMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
15. TORQUE VALUES FOR AIR CONDITIONING TUBES AND FITTINGS . . . . . . . . . . . . . . . . 16
16. TORQUE VALUES FOR AIR CONDITIONING O-RING CONNECTIONS . . . . . . . . . . . . . . . 16

INTRODUCTION SECTION 1
Page 1
DRESSTA TD-25M EXTRA
SAFETY PRECAUTIONS
1. GENERAL
The instructions contained in this service manual are for information and guidance of service
personnel who are responsible for overhaul and repair of the machine.
Due to a continuous program of research and development, some procedures, specifications and
parts may be altered in a constant effort to improve this machine. Some illustrations are
of a general application of this model and may not show your machine and component parts
accurately in all details.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve
the right to make changes or add improvements at any time without incurring any obligation to
install such changes on products sold previously.
Fig. 1.1. TD-25 Series M EXTRA Crawler Tractor
1. Right Hand Side of the Machine
2. Left Hand Side of the Machine 3. Front of the Machine 4. Rear of the Machine
Throughout this manual there will be two types of cross references. One type is to a heading in
another section. The other is to a heading within the same section. Unless it is otherwise stated,
references will be to the same section. Refer to the section contents page at the beginning of the
individual sections for specific page numbers.
Throughout this manual the use of the terms “Left”, “Right”, “Front” and “Rear” must be understood
to avoid confusion when following instructions. “Left" and “Right" indicate the left and right sides of
the machine when facing forward in the operator's seat, refer to Fig. 1.1.

SECTION 1 INTRODUCTION
Page 2
TD-25M EXTRA DRESSTA
SAFETY PRECAUTIONS
Throughout this manual the following warning symbols and notes are used to warn the persons
against danger.
DANGER! This sign and the text in bold letters used throughout this Manual
indicates an emergency, which, if not avoided, will result in serious injury or
death. This sign calls your attention to a most serious danger.
WARNING! This sign and the text in bold letters used throughout this Manual
indicates an emergency, which, if not avoided, may result in injury or death.
CAUTION: This sign and the text in bold letters used throughout this Manual
indicates an emergency, which, if not avoided, may result in minor injury.
Besides above, two words are used thorougout the manual related to possible damage of machine
units, its functioning or facilitating the maintenance, beneficiary influence on machine operation
and period to overhaul.
IMPORTANT: This sign and text in italics is used throughout this manual to call your attention to
key problems for machine operation. Failure to follow such instructions may result in damage of the
machine and heavy material losses.
NOTE: This sign and text in italics is used throughout this manual to call your attention to important
function having influence on the right functioning of the machine or for informational purposes.
WORK SAFETY – FOLLOW THESE RULES
This symbol and text with bold letters is used throughout this manual to call your
attention to instructions concerning your personal safety. Observe and follow
these instructions. Be certain anyone operating and servicing this machine is
aware of these rules. Failure to follow these rules may result in injury or death.
WARNING: The machine can only be operated and serviced by a person who is
familiar with OPERATOR’S MANUAL and SERVICE MANUAL, knows operation of
the machine and its mechanisms, experienced and properly licensed to operate
such machines.
The instructions and information given in this section do not cover all you ought to know to operate
the machine safely. Detailed instructions regarding operational safety appear in the following
sections of this manual. Carefully observe and follow all instructions provided in this manual.
Human error is an important factor in most equipment-related injuries. Haste, carelessness and
lack of training are the primary causes of injuries.
Most operating injuries occur because of excessive speed, loss of control, failure to observe
warning signs, slipping or falling while entering for dismounting, a lack piles on roadways, lack of
a ROPS or seat belt, or not watching in the direction of travel.