Komatsu AVANCE LOADER WA700-3 User manual

NOTICE
Komatsu has Operation & Maintenance Manuals written in
some other languages. If a foreign language manual is
necessary, contact your local distributor for availability.
Unsafe use of this machine may cause serious injury
or death. Operators and maintenance personnel
must read this manual before operating or maintain-
ing this machine. This manual should be kept near the
machine for reference and periodically reviewed
by all personnel who will come into contact with it. 
WA700-3
WHEEL LOADER
SERIAL NUMBERS WA700-50010 and up
SEAM018501

0-1
1. FOREWORD
This manual provides rules and guidelines which will help you use this machine safely and
effectively. Keep this manual handy and have all personnel read it periodically. If this manual has been
lost or has become dirty and can not be read, request a replacement manual from Komatsu or your
Komatsu distributor.
If you sell the machine, be sure to give this manual to the new owners.
Continuing improvements in the design of this machine can lead to changes in detail which may not
be reflected in this manual. Consult Komatsu or your Komatsu distributor for the latest available
information of your machine or for questions regarding information in this manual.
This manual may contain attachments and optional equipment that are not available in your area.
Consult Komatsu or your Komatsu distributor for those items you may require.
WARNING
‡ Improper operation and maintenance of this machine can be hazardous and could result in serious
injury or death.
‡ Operators and maintenance personnel should read this manual thoroughly before beginning
operation or maintenance.
‡ Some actions involved in operation and maintenance of the machine can cause a serious accident,
if they are not done in a manner described in this manual.
‡ The procedures and precautions given in this manual apply only to intended uses of the machine.
If you use your machine for any unintended uses that are not specifically prohibited, you must
be sure that it is safe for you and others. In no event should you or others engage in prohibited
uses or actions as described in this manual.
‡ Komatsu delivers machines that comply with all applicable regulations and standards of the
country to which it has been shipped. If this machine has been purchased in another country or
purchased from someone in another country, it may lack certain safety devices and specifications
that are necessary for use in your country. If there is any question about whether your product
complies with the applicable standards and regulations of your country, consult Komatsu or your
Komatsu distributor before operating the machine.
‡ The description of safety is given in SAFETY INFORMATION on page 0-2 and in SAFETY from page
1-1.
CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its
constituents are known to the State
of California to cause cancer, birth
defects, and other reproductive
harm.

0-2
2. SAFETY INFORMATION
Most accidents are caused by the failure to follow fundamental safety rules for the operation and
maintenance of machines. To avoid accidents, read, understand and follow all precautions and warnings
in this manual and on the machine before performing operation and maintenance.
To identify safety messages in this manual and on machine labels, the following signal words are
used.
DANGER – This word is used on safety messages and safety labels where there is a high
probability of serious injury or death if the hazard is not avoided. These safety
messages or labels usually describe precautions that must be taken to avoid the
hazard. Failure to avoid this hazard may also result in serious damage to the
machine.
WARNING – This word is used on safety messages and safety labels where there is a
potentially dangerous situation which could result in serious injury or death if
the hazard is not avoided. These safety messages or labels usually describe
precautions that must be taken to avoid the hazard. Failure to avoid this hazard
may also result in serious damage to the machine.
CAUTION – This word is used on safety messages and safety labels for hazards which could
result in minor or moderate injury if the hazard is not avoided. This word might
also be word for hazards where the only result could be damage to the machine.
NOTICE – This word is used for precautions that must be taken to avoid actions which
could shorten the life of the machine.
Safety precautions are described in SAFETY from page 1-1.
Komatsu cannot predict every circumstance that might involve a potential hazard in operation and
maintenance. Therefore the safety messages in this manual and on the machine may not include all
possible safety precautions. If any procedures or actions not specifically recommended or allowed in this
manual are used, you must be sure that you and others can do such procedures and actions safely and
without damaging the machine. If you are unsure about the safety of some procedures, contact your
Komatsu distributor.

0-3
3. INTRODUCTION
3.1 INTENDED USE
This machine is intended mainly for the following operations.
‡ Digging operations
‡ Leveling operations
‡ Pushing operations
‡ Loading operations
For details of the operating procedure, see “12.10 WORK POSSIBLE USING WHEEL LOADER”.
3.2 FEATURES
1. Easy to operate work equipment
‡ By using the kick-down switch installed to the knob on the boom control lever, it is possible to
shift down from 2nd to 1st, thereby providing speedy digging and loading operations.
‡ Installing the bucket corner teeth and segment edge greatly increases the wear resistance of the
bucket.
2. Easy to operate machine
‡ The electrical transmission control provides light gear shifting, enabling finger control.
‡ The length of both the directional and speed levers can be adjusted individually.
‡ The PPC valve (proportional pressure type) provides good response when raising the boom and
little operating force is required.
‡ A wrist rest is provided by the control levers to improve the ease of control.
3. Operating comfort
‡ The cab is provided with a door-open lock, large sun visor, and small storage box. It also has
rubber mounts to further reduce the vibration and noise.
‡ The sealed pressurized cab with air conditioner make pleasant operations possible.
‡ A fabric seat is used for the operator’s seat to give the operator a good ride.
4. High levels of safety
‡ Safety is ensured by the good visibility from the cab, the wide area around the operator’s seat,
steps for getting on and off the machine, and the walk-through floor at the rear of the cab.
‡ Checks before starting and checks for abnormalities during operation can be carried out using
the machine monitor.
‡ Maintenance free wet-type multiple disc brakes are used.
3.3 BREAKING IN THE MACHINE
Your Komatsu machine has been thoroughly adjusted and tested before shipment.
However, operating the machine under severe conditions at the beginning can adversely affect the
performance and shorten the machine life.
Be sure to break in the machine for the initial 100 hours (as indicated by the service meter.)
During breaking in:
‡ Idle the engine for 5 minutes after starting it up.
‡ Avoid operation with heavy loads or at high speeds.
‡ Avoid sudden starts, sudden acceleration, sudden steering and sudden stops except in cases of
emergency.
The precautions given in this manual for operating, maintenance, and safety procedures are only
those that apply when this product is used for the specified purpose. If the machine is used for a purpose
that is not listed in this manual, Komatsu cannot bear any responsibility for safety. All consideration of
safety in such operations is the responsibility of the user.
Operations that are prohibited in this manual must never be carried out under any circumstances.

0-4
4. LOCATION OF PLATES, TABLE TO ENTER
SERIAL NO. AND DISTRIBUTOR
REMARKS
Machine serial No.:
Engine serial No.:
Distributor name:
Address: Phone:
Service personnel for your machine:
Position of stamp
This is stamped on the center of the front frame on the right side
of the machine.
4.2 ENGINE SERIAL NO. PLATE POSITION
Position of plate
On the left of the cylinder block, when seen from the fan side.
Position of stamp
This is stamped on the left side of the engine cylinder block as
seen from the fan.
4.1 MACHINE SERIAL NO. PLATE POSITION
Position of plate
On the center right of the front frame.
4.3 TABLE TO ENTER SERIAL NO. AND DISTRIBUTOR

0-5
5. CONTENTS
1. Foreword ............................................................................................................................................ 0- 1
2. Safety information ............................................................................................................................ 0- 2
3. Introduction ........................................................................................................................................ 0- 3
4. Location of plates, table to enter serial No. and distributor ...................................................... 0- 4
SAFETY
6. General precautions .......................................................................................................................... 1- 2
7. Precautions during operation .......................................................................................................... 1- 7
7.1 Before starting engine ............................................................................................................ 1- 7
7.2 After starting engine ............................................................................................................... 1-10
7.3 Transportation .......................................................................................................................... 1-18
7.4 Battery ....................................................................................................................................... 1-19
7.5 Towing ...................................................................................................................................... 1-21
8. Precautions for maintenance ........................................................................................................... 1-22
8.1 Before carrying out maintenance .......................................................................................... 1-22
8.2 During maintenance ................................................................................................................ 1-27
8.3 Tires .......................................................................................................................................... 1-33
9. Position for attaching safety labels ................................................................................................ 1-35
OPERATION
10. General view ...................................................................................................................................... 2- 2
10.1 General view of machine ....................................................................................................... 2- 2
10.2 General view of controls and gauges .................................................................................. 2- 3
11. Explanation of components ............................................................................................................. 2- 4
11.1 Machine monitor ..................................................................................................................... 2- 4
11.2 Switches ................................................................................................................................... 2-14
11.3 Control levers, pedals ............................................................................................................. 2-23
11.4 Steering column tilt lever ....................................................................................................... 2-28
11.5 Cap with lock ........................................................................................................................... 2-28
11.6 Engine emergency stop switch and fuel stop lever ........................................................... 2-29
11.7 Safety bar ................................................................................................................................. 2-29
11.8 Towing pin ............................................................................................................................... 2-30
11.9 Grease pump ........................................................................................................................... 2-31
11.10 Backup alarm ........................................................................................................................... 2-31
11.11 Door-open lock ........................................................................................................................ 2-31
11.12 Tool box ................................................................................................................................... 2-31
11.13 Fuse ........................................................................................................................................... 2-32
11.14 Slow-blow fuse ........................................................................................................................ 2-33
11.15 Lunch box tray ......................................................................................................................... 2-34
11.16 Storaging place of this manual ............................................................................................. 2-34
11.17 Taking off power ..................................................................................................................... 2-34
11.18 AM/FM car radio ...................................................................................................................... 2-35
11.19 AM/FM radio-cassette stereo ................................................................................................. 2-39
11.20 Car heater ................................................................................................................................. 2-48
11.21 Air conditioner ......................................................................................................................... 2-50
11.22 Precautions when handling accumulator ............................................................................. 2-53

0-6
5. CONTENTS
12. Operation ............................................................................................................................................ 2-54
12.1 Check before starting engine ................................................................................................. 2-54
12.2 Starting engine ........................................................................................................................ 2-68
12.3 Operations and checks after starting engine ....................................................................... 2-74
12.4 Moving machine off ................................................................................................................ 2-75
12.5 Changing gear speed .............................................................................................................. 2-77
12.6 Changing direction .................................................................................................................. 2-78
12.7 Turning ..................................................................................................................................... 2-78
12.8 Stopping machine ................................................................................................................... 2-79
12.9 Operation of work equipment ............................................................................................... 2-80
12.10 Work possible using wheel loader ........................................................................................ 2-81
12.11 Precautions for operation ....................................................................................................... 2-86
12.12 Adjusting work equipment posture ...................................................................................... 2-88
12.13 Parking machine ...................................................................................................................... 2-90
12.14 Checks after completion of operation .................................................................................. 2-91
12.15 Stopping engine ...................................................................................................................... 2-91
12.16 Check after stopping engine .................................................................................................. 2-92
12.17 Locking ...................................................................................................................................... 2-92
12.18 Handling the tires .................................................................................................................... 2-93
12.19 Removal and installation of the bucket ................................................................................ 2-95
13. Transportation ................................................................................................................................... 2-99
13.1 Lifting machine ........................................................................................................................ 2-99
14. Cold weather operation ................................................................................................................... 2-100
14.1 Precautions for low temperature ........................................................................................... 2-100
14.2 Precautions after completion of work .................................................................................. 2-102
14.3 After cold weather ................................................................................................................... 2-102
14.4 Warming-up operation for steering hydraulic circuit in cold weather ............................. 2-103
15. Long-term storage ............................................................................................................................ 2-104
15.1 Before storage ......................................................................................................................... 2-104
15.2 During storage ......................................................................................................................... 2-104
15.3 After storage ............................................................................................................................ 2-104
16. Troubleshooting ................................................................................................................................ 2-105
16.1 When machine runs out of fuel ............................................................................................ 2-105
16.2 Towing the machine ............................................................................................................... 2-106
16.3 If battery is discharged ........................................................................................................... 2-109
16.4 Other trouble ............................................................................................................................ 2-113

0-7
5. CONTENTS
MAINTENANCE
17. Guides to maintenance .................................................................................................................... 3- 2
18. Outlines of service ............................................................................................................................ 3- 5
18.1 Outline of oil, fuel, coolant .................................................................................................... 3- 5
18.2 Outline of electric system ...................................................................................................... 3- 8
19. Wear parts list ................................................................................................................................... 3- 9
20. Use of fuel, coolant and lubricants according to ambient temperature ................................... 3-10
21. Standard tightening torques for bolts and nuts .......................................................................... 3-14
21.1 Introduction of necessary tools ............................................................................................. 3-14
21.2 Torque list ................................................................................................................................ 3-15
22. Periodic replacement of safety critical parts ................................................................................. 3-16
23. Maintenance schedule chart ............................................................................................................ 3-18
23.1 Maintenance schedule chart .................................................................................................. 3-18
24. Service Procedure ............................................................................................................................. 3-22
24.1 Initial 250 hours service ......................................................................................................... 3-22
24.2 When required ......................................................................................................................... 3-23
24.3 Check before starting .............................................................................................................. 3-45
24.4 Every 50 hours service ........................................................................................................... 3-52
24.5 Every 100 hours service ......................................................................................................... 3-53
24.6 Every 250 hours service ......................................................................................................... 3-57
24.7 Every 500 hours service ......................................................................................................... 3-63
24.8 Every 1000 hours service ....................................................................................................... 3-68
24.9 Every 2000 hours service ....................................................................................................... 3-74
24.10 Every 4000 hours service ....................................................................................................... 3-83
SPECIFICATIONS
25. Specifications ..................................................................................................................................... 4- 2
OPTIONS, ATTACHMENTS
26. Optional part and attachments ....................................................................................................... 5- 2
27. Selecting buckets and tires ............................................................................................................. 5- 3
28. Handling auto shift system ............................................................................................................. 5- 4
28.1 Automatic shift system ........................................................................................................... 5- 4
28.2 Precautions when changing direction .................................................................................. 5- 5
29. Handling joystick steering system .................................................................................................. 5- 6
29.1 Explanation of components ...................................................................................................5-6
29.2 Structure and function of joystick steering .......................................................................... 5- 7
29.3 Operation method of joystick steering system ................................................................... 5-10
29.4 Precautions for steering with joystick .................................................................................. 5-12
29.5 Adjustment of joystick console ............................................................................................. 5-13
29.6 Adjustment operator’s seat .................................................................................................... 5-14

0-8
5. CONTENTS
30. Main monitor failure display ............................................................................................................ 5-16
30.1 Main monitor failure display ................................................................................................. 5-16
30.2 Error codes list indicated on main monitor ......................................................................... 5-17
31. Handling auto-greasing system ....................................................................................................... 5-19
31.1 Method of operating auto-greasing system......................................................................... 5-20
31.2 Precautions when handling auto-greasing system ............................................................. 5-20
31.3 Method of adjusting discharge from injector ...................................................................... 5-26
31.4 Method of setting timer ......................................................................................................... 5-27

1-1
SAFETY
WARNING
Read and follow all safety precautions. Failure to do so may result
in serious injury or death.
This safety section also contains precautions for optional equip-
ment and attachments.