Name: Komatsu WB140-2N
Brand: Komatsu
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MAINTENANCE

3-12 WB140-2N, WB150-2N

LUBRICATION DIAGRAMS

GENERAL

• For lubrication procedures for single points See “MAINTENANCE PLAN” on page 3-22.

Note: Use only recommended oil and grease, See “FUEL, COOLANT, AND LUBRICANTS” on page 3-7.

Introduction6
Foreword6
Safety Information7
Approved and Non-Approved Uses8
Non-Approved8
Product Information9
Main Features9
Break-In Period9
Synthetic Biodegradable Oil Types9
Product Identification10
Machine Serial Number10
Machine Identification Plate10
Engine Serial Number and Emission Label11
Front Axle Serial Number11
Rear Axle Serial Number11
Transmission Serial Number12
Cab Serial Number12
Canopy Serial Number12
Serial Numbers and Dealer Information13
Model: Wb140-2N / Wb150-2N13
Table of Contents14
Safety24
General Safety Rules and Precautions24
General Safety Rules24
Safety Features25
Personal Protective Equipment25
Unauthorized Modifications25
Leaving Operator's Compartment26
Mounting and Dismounting27
Fire Prevention for Fuel and Oil27
Dust Hazard Precautions28
Crush or Pinch Point Dangers28
Fire Extinguisher and First Aid Kit28
Inside Operator's Compartment29
Precautions When Using Rops29
Precautions for Attachments29
Precautions before Starting Work Operations30
Pre-Operational Checks30
Perform a Walk Around Check of Your Machine30
Under the Hood30
In the Operator's Cab31
Start-Up Checks31
Starting Your Work Operations31
Work Site Hazards32
Working Clearances32
Rules for Road Travel33
Rules for Traveling in Reverse34
Traveling on Icy or Snow-Covered Surfaces34
Working on Loose or Unstable Ground34
Precautions During Maintenance Operations35
Warning Tags35
Equipment Storage35
Working under the Machine36
Using Drop Lamps36
Keeping the Machine Clean36
Running the Machine During Maintenance37
Rules for Refueling the Machine37
Cooling System Precautions37
Battery Precautions38
Starting the Machine38
High Pressure Hoses39
High Temperatures Areas39
Rotating Parts39
Disposal of Waste Materials40
Inflating Tires40
Critical Parts40
Vibrations to Which the Operator Is Exposed40
Safety and Warning Decals41
Location of the Safety Decals41
Location of the Pictogram Decals55
General View of Machine58
Front View of Machine58
Rear View of Machine59
Pictograms60
Work Area Dangers60
Moving or Rotating Engine Components60
Filling the Hydraulic System60
Engine Oil Filter60
Brake Fluid60
Fuel Filter61
Engine Coolant61
Air Filter61
Engine Coolant Pressure Warning61
Hydraulic Oil Level61
Hydraulic Oil Filter61
Transmission Oil Level62
Transmission Fluid Filter62
Anchorage Point62
Emergency Exit62
Boom Lock62
Swing Lock62
Description of Machine Operation Controls63
Inside the Cab63
Front Instrument Bezel and Controls64
Transmission Oil Temperature Alert64
Engine Coolant Temperature Alert64
Four-Wheel Drive (In/Out) Indicator64
Low Fuel Alert64
Directional Signal Indicator65
High Beam Indicator65
Parking Brake and Brake Fluid Alert65
Differential (Lock/Unlock) Indicator65
Multifunctional Directional Switch65
Four-Wheel Drive Switch66
Windshield Wiper/Washer Switch66
Front Work Lamps Switch66
Emergency (Hazard) Switch66
Optional Equipment Switch66
Side Instrument Bezel and Controls67
Fuel Level Gauge67
Tachometer and Hour Meter67
Engine Coolant Temperature Gauge68
Air Cleaner Restriction Alert68
Engine Oil Pressure Alert68
Glow Plugs Preheat Indication68
Alternator Alert68
Engine Coolant Temperature Alert69
Optional Equipment Alert69
Audible Warning System69
Rear Work Lamps69
Windshield Wiper/Washer Switch69
Emergency Flashing Light Switch69
Rear Horn70
Load Stabilizer Switch (Optional)70
Air Conditioning Switch (Optional)70
Ignition Switch70
Blower Switch70
Backhoe Power Control Switch71
Backhoe Boom Lock Switch71
Optional Switch Locations71
Front End Loader Controls72
Loader Declutch Control Button72
Differential Lock Button72
Bucket Open Button73
Bucket Close Button73
Front End Loader Speed Control Button73
Gear Shift Lever Controls74
Declutch Button74
Changing Speed Ranges74
Directional Control Lever74
Brakes, Parking Brake, Accelerator and Throttle Control75
Brake Pedals75
Parking Brake75
Accelerator Pedal76
Hand Throttle76
Cab Environment and Safety Equipment77
Heating and Ventilation System77
Air Conditioning77
Heating System77
Seat and Seat Belt78
Seat78
Seat Belt78
Safety Equipment and Storage Areas79
Fire Extinguisher79
First Aid Kit79
Document Storage79
Tool Case79
Cab and Guards80
Cab80
Doors and Windows80
Engine Hood81
Electrical82
Switches and Extra Accessories82
Overhead Lamp82
Battery Disconnect82
Optional Electrical Switch Location82
Fuses and Relays83
Fuse and Relay Panel Location83
Dashboard Relay Location83
Fuse and Relay Panel Lay out84
Engine Fuse and Relay Location85
Operating the Machine87
Checking the Fuel Supply87
Starting the Engine87
Starting the Engine in Cold Weather88
Warming the Machine up89
Shutting the Engine down89
Operating the Front End Loader and Backhoe90
Operating the Front End Loader90
Control Lever Positions90
Performing Loading Operations91
Bucket Position Indicator91
Organizing Your Work Area91
Loading Heaped Material92
Loading a Truck Bed or Trailer92
Working on Slopes with a Loaded Bucket93
Changing the Front Bucket93
Operating the Backhoe94
Positioning the Machine94
Adjusting the Digging Bucket95
Digging Methods96
Changing the Backhoe Bucket97
Iso Backhoe Controls98
Komatsu Backhoe Controls99
Safety Lock Usage100
Backhoe Locks102
Moving or Traveling with the Machine103
Traveling103
Traveling on Slopes104
Traveling or Working in Swampy or Wet Areas105
Parking the Machine106
For Short or Long Periods of Time106
Parking on an Incline107
Transporting the Machine108
Loading and Securing the Machine108
Emergency Recovery109
How to Move the Machine109
Precautions During Seasonal Changes110
Cold Seasons110
Fuel and Lubricants110
Coolant110
Battery110
Warm Seasons111
Basic Troubleshooting112
The Battery112
Servicing the Battery112
Removal and Installation112
Starting the Engine with Booster Cable113
Electrical Circuits115
Hydraulic System115
Braking System116
Torque Converter System116
Engine117
Guide to Maintenance120
Maintenance Notes121
Notes Regarding the Engine121
Engine Oil121
Coolant122
Fuel122
Notes Regarding the Hydraulic System122
Notes Regarding the Electrical System123
Notes Regarding Lubrication123
Parts Subject to Wear that Periodically Need Changing124
Fuel, Coolant, and Lubricants125
Proper Selection According to the Ambient Temperature125
Grease126
Lubrication Diagrams130
General130
Multipurpose Bucket and Pallet Forks131
Front Bucket Quick Couplings132
Telescopic Arm133
Periodic Replacement of Components Connected with Safety134
Critical Parts for Safety135
Fuel Supply System135
Delivery / Return Hydraulic System136
Loader and Backhoe Hydraulic System137
Operator's Safety138
Standard Tightening Torque139
Standard Tightening Torque for Bolts and Nuts139
Specific Tightening Torques139
Maintenance Plan140
Checks before Starting144
Various Checks144
Checking Fuel Level144
Checking Coolant Level145
Checking Engine Oil Level145
Checking Hydraulic System Oil Level146
Draining Water Separator147
Maintenance Every 10 Hours of Operation147
Lubricating Joints (Grease Fittings)147
Joint Lubrication Points148
Front Loader Lubrication Locations148
Backhoe Lubrication Locations149
Maintenance after First 50 Hours of Operation150
Maintenance Every 50 Hours of Operation150
Checking Radiator Fluid Level150
Checking Brake System Oil Level150
Lubricating Propeller Shafts151
Lubricating Front Axle Joints Central Coupling152
Checking Tire Pressure152
Checking Electrical System153
Maintenance after the First 250 Hours of Operation153
Maintenance Every 250 Hours of Operation154
Adjusting Fan Belt Tension154
Cleaning Outside of Radiator155
Checking Battery Electrolyte Level155
Checking Front Axle Oil Levels156
Checking Rear Axle Oil Levels156
Checking Hydraulic Transmission Oil Level157
Checking Wheel Lug Nut Torque157
Maintenance after First 500 Hours of Operation158
Maintenance Every 500 Hours of Operation159
Changing Engine Oil159
Changing Engine Oil Filter160
Changing Hydraulic System Oil Filter161
Changing Fuel Filter162
Fuel Filter162
Bleeding the Circuit162
Draining Fuel Tank163
Draining Hydraulic Oil Tank164
Maintenance Every 1000 Hours165
Changing Front Axle Oil165
Differential165
Planetary165
Changing the Rear Axle Oil166
Differential166
Planetary166
Changing Hydraulic Transmission Oil167
Changing Hydraulic Transmission Filter168
Checking and Adjusting Engine Valve Clearance168
Maintenance Every 2000 Hours of Operation169
Changing Hydraulic System Oil and Cleaning Suction Filter169
Changing Coolant171
Changing the Braking System Oil173
Checking Alternator and Starter173
When Required174
Checking, Cleaning, or Changing Air Cleaner Cartridge174
Checking and Cleaning Cab Air Filters175
Bleeding Brake System176
Flushing Cooling System177
Cleaning the Water Separator179
Checking and Adjusting Front Wheel Toe-In179
Checking and Adjusting Parking Brake180
Check180
Adjustment180
Checking the Braking Efficiency181
Checking and Adjusting Brake Pedal Stroke182
Adjusting Automatic Return of Front Bucket to the Digging Position182
Maintenance Intervals in Case of Demolition Hammer Use183
Changing Hydraulic Oil Filter183
Changing Hydraulic Oil183
Long Term Storage184
Before Storage184
During Storage185
After Storage185
Specifications188
Technical Data188
Standard Overall Dimensions188
Technical Characteristics Wb140-2N (Aspirated Engine)189
Total Mass189
Standard Bucket Capacity189
Aspirated Engine189
Electrical System189
Travel Speeds189
Tires189
Technical Characteristics Wb140-2N (Turbocharged Engine)190
Total Mass190
Standard Bucket Capacity190
Aspirated Engine190
Electrical System190
Travel Speeds190
Tires190
Technical Characteristics Wb150-2N191
Total Mass191
Standard Bucket Capacity191
Aspirated Engine191
Electrical System191
Travel Speeds191
Tires191
Lifting Capacities192
Symbols192
Lifting Capacity Wb140-2N193
Lifting Capacity Wb150-2N195
Optional Attachments198
Authorized Optional Equipment198
Basic Precautions198
Optional Equipment Measurements for (Wb140-2N)199
Front End Loader199
Backhoe Unit199
Optional Equipment Measurements for (Wb150-2N)200
Front End Loader200
Backhoe Unit200
Front Equipment Quick Coupling Devices201
Manual Control Quick Coupling201
Multipurpose Bucket202
Bucket Operation203
Description203
Bucket Uses203
Pallet Forks Kit204
Removing and Installing the Forks204
Backhoe Telescopic Arm206
Description and Control206
Safety Locks206
Maintenance207
Demolition Hammer209
Description and Control209
Rules for Hammer Usage210
Always Avoid the Following Uses211
Installation and Removal of the Demolition Hammer213
Clamshell Bucket214
Description and Control214
Installation and Removal of the Clamshell Bucket215
Operating the Clamshell Bucket215
Hydraulic Jack Hammer216
Description and Control216
Connecting and Removing the Jack Hammer217
Using the Jack Hammer217

Komatsu WB140-2N User Manual

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Brand	Komatsu
Model	WB140-2N
Category	Compact Loader
Language	English