Name: Komatsu WA250-3
Brand: Komatsu
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OPERATION

2-3

10.2 GENERAL VIEW OF CONTROLS AND GAUGES

Introduction5
Forward5
Safety Information6
Intended Use7
Features7
Breaking in a New Machine7
Location of Plates, Table to Enter Serial No. and Distributor8
Machine Serial No. Plate Position8
Table of Contents9
General Precautions16
Precautions During Operation22
Before Starting Engine22
After Starting Engine25
Transportation34
Battery35
Towing38
Precautions for Maintenance39
Before Carrying out Maintenance39
During Maintenance44
Tires49
Position for Attaching Safety Labels51
General View56
General View of Machine56
General View of Controls and Gauges57
Explanation of Components58
Meter, Lamps58
Meter Display Portion59
Switches68
Control Levers, Pedal74
Steering Column Tilt Lever78
Cap with Lock78
Method of Opening and Closing Cap with Lock78
Safety Bar79
Towing Pin79
Grease Pump Clamp and Rubber Ring79
Backup Alarm80
Fuse81
Fuse Capacity and Name of Circuit81
Slow Blow Fuse82
Storage Place for this Manual83
Auxiliary Power Source83
For Machines Equipped with Rops Cab83
Check before Starting Engine84
Walk Around Check84
Check before Starting87
Check Coolant Level, Add Coolant87
Check Monitor Panel87
Check Fuel Level, Add Fuel88
Check Oil Level in Engine Oil Pan, Add Oil88
Check and Refill of Oil in Brake Oil Tank89
Check Dust Indicator89
Check Electrical Wiring90
Drain the Water from the Fuel-Water Separator91
Check Effect of Parking Brake91
Check Effect of Wheel Brakes92
Check Sound of Horn and Backup Alarm92
Check Flashing of Lamps, Check for Dirt and Damage92
Check Engine Exhaust Color and Sound92
Check Operations of Gauges92
Check Play of Steering Wheel, Check Operation of Steering92
Check Direction of Rear View Mirror, Check for Dirt or Damage92
Check Lock of Cab Door for Machines Equipped with Cab92
Adjustment before Operation93
Operator's Seat93
Adjust Seat Belt95
Adjust Rear Veiw Mirrors96
Operations and Checks before Starting Engine97
Starting Engine98
Normal Starting Procedures in Cold and Warm Conditions98
Starting Procedures after Extended Shutdown or Oil Change99
Starting Procedures after Changing Fuel Filters99
Starting Procedures after Running out of Fuel99
Operations and Checks after Starting Engine100
Moving Machine off101
Changing Gear Speed103
Changing Direction103
Turning104
Stopping Machine105
Operation of Work Equipment (with Bucket)106
Lift Arm Operation (Lever)106
Bucket Operation (Lever)106
Operation of Work Equipment (with Fork)107
Lift Arm Operation (Lever)107
Fork Operation (Lever)107
Operation of Work Equipment (with Multi-Purpose Bucket)108
Lift Arm Operation (Lever)108
Bucket Operation (Lever)108
Auxiliary Operation (Lever)109
Position Indicator109
Operation of Work Equipment111
Lift Arm Operation (Lever)111
Hydraulic Quick Coupler112
Coupling the Attachment112
Uncoupling the Attachment113
Attachments Requiring Hydraulic Power114
Work Possible Using Parallel Tool Carrier115
Digging Operations with Rock Piles (General Purpose Bucket)115
Digging Operations on Level Ground116
Leveling Operation117
Pushing Operations117
Load and Carry Operations117
Loading Operations118
Multi-Purpose Bucket119
Pallet Forks124
Material Handling Arm127
Precautions for Operation128
Permissible Water Depth128
If Wheel Brake Does Not Work128
Precautions When Driving up or down Slopes128
Precautions When Driving Machine129
Adjusting Boom Kickout130
Adjusting Bucket Positioner131
Parking Machine132
Checks after Completion of Engine Operation133
Stopping Engine133
Checks after Stopping Engine134
Locking134
Handling the Tires135
Precautions When Handling the Tires135
Tire Pressure135
Transportation137
Loading, Unloading Work137
Precaution for Loading138
Precaution for Lifting up the Vehicle138
The Location of Decals Referring to Lifting Positions139
Weight List139
Lifting Procedure140
Cold Weather Operations141
Precautions for Low Temperature141
Fuel and Lubricants141
Coolant141
Battery142
Precautions after Completion of Work143
After Cold Weather143
Long Term Storage144
Before Storage144
During Storage144
After Storage144
Troubleshooting145
When Machine Runs out of Fuel145
Towing the Machine146
When Engine Can be Used148
When Engine Cannot be Used148
If Battery Is Discharged149
Removal and Installation of Battery149
Precautions for Charging Battery150
Starting Engine with Booster Cable151
Other Trouble153
Electrical System153
Chassis154
Engine157
Guides to Maintenance160
Outlines of Service163
Outline of Oil, Fuel, Coolant163
Oil163
Fuel163
Coolant164
Grease165
Storing Oil and Fuel165
Filters165
Outline of Electric System166
Wear Parts List167
Use of Fuel, Coolant and Lubricants According to Ambient Temperature168
Engine Oil Specifications169
Diesel Fuel Specifications169
Coolant Specifications171
Standard Tightening Torque for Bolts and Nuts177
Introduction of Necessary Tools177
Torque List178
Periodic Replacement of Safety Critical Parts180
Maintenance Schedule Chart184
Service Procedures188
Initial 250 Hours Service188
Replace Fuel Filters188
Replace Transmission Oil Filter Element188
Replace Hydraulic Tank Filter Element188
INITIAL 250 HOURS SERVICE (Only after the First 250 Hours)188
When Required189
Check, Clean or Replace Air Cleaner Element189
Check Transmission Oil Level, Add Oil191
Check Axle Oil Level , Add Oil192
Check Axle Oil Level, Add Oil192
Clean the Axle Case Breather193
Clean Radiator Fins193
Replace the Bolt-On Cutting Edges194
Replace Bucket Teeth (if Equipped)195
Replace Bucket Teeth195
Check Air Conditioner (if Equipped)196
Check Air Conditioner196
Check the Air Conditioner Condenser (if Equipped)197
Check Window Washing Fluid197
Adjust Parking Brake198
Replace Slow Blow Fuse199
Check Air Intake Heater199
Check before Starting200
Every 50 Hours Service201
Check the Tire Inflation Pressure201
Drain Water, Sediment from Fuel Tank201
Every 100 Hours Service202
Check Oil Level in Hydraulic Tank, Add Oil202
Clean Element in Air Conditioner Fresh Air Filter203
Lubricating204
Rear Axle Pivot Pin (2 Places)204
Bucket Hinge Pin (2 Places)204
Bucket Link Pin (2 Places)204
Every 250 Hours Service205
Change Oil in Engine Oil Pan and Replace Engine Oil Filter205
Check for Loose Wheel Hub Nuts. Tighten206
Check for Loose Wheel Hub Nuts, Tighten206
Clean Element in Air Conditioner Recirculation Filter206
Check Air Conditioner Compressor Belt Tension, Adjust207
Check Battery Electrolyte Level208
Check Air Intake System208
Lubricating209
Dump Cylinder Pin (4-Places)209
Loader Link Pin (10 Places)209
Lift Cylinder Pin (4 Places)209
Lift Arm Pivot Pin (2 Places)209
Steering Cylinder Pin (4 Places)209
Every 500 Hours Service210
Replace Fuel Filters210
Replace Transmission Oil Filter Element212
Lubricate213
Center Drive Shaft Spline (1 Place)213
Every 1000 Hours Service214
Change Oil in Transmission Case, Clean Strainer214
Clean Transmission Case Breather215
Lubricate216
Center Hinge Pin (2 Places)216
Front Drive Shaft(2 Places)216
Drive Shaft Center Support (1 Place)216
Center Drive Shaft (2 Places)216
Adjust Engine Valve Lash Clearance217
Rear Drive Shaft (2 Places)217
Adjust Engine Valve Lash Clearance (after First 1000 Hours Only Thereafter Every 2000 Hour Intervals)217
Check Fan Belt Tension218
Check Fan Belt Tensioner Bearing & Fan Hub Bearing & Inspect Fan Belt218
Every 2000 Hours Service219
Change Oil in Hydraulic Oil Tank, Replace Hydraulic Filter Element219
Replace Hydraulic Tank Breather Element221
Cooling System, Replace Coolant and Flush the System222
Change Axle Oil225
Check Brake Disc Wear226
Check Alternator226
Check Starter Motor226
Check Vibration Damper226
Adjust Engine Valve Lash Clearance227
Specifications229
Options, Attachments237
Available Attachments238
Selecting Attachments and Tires239
Heater and Air Conditioning (if Equipped)240
General Location and Function of Control Panel240
Cool Box Compartment241
Handling E.C.s.s. (Electronic Controlled Suspension System) (if Equipped)242
Structure and Function of E.C.s.s242
Method of Operating E.C.s.s243
Precautions When Operating E.C.s.s243
Precautions When Handling Accumulator244

Brand	Komatsu
Model	WA250-3
Category	Front End Loaders
Language	English

Komatsu WA250-3 Service Manual

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Komatsu WA250-3 Specifications

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