John Deere 120D Excavator Operator's Manual is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.

OMT237811 - John Deere 120D Excavator Operator's Manual.pdf
omt237826 - John Deere Excavatrice 120D.pdf
omt237827 - John Deere Excavadora 120D.pdf

Category: Operator's Manual
Language: Spanish English French

TABLE OF CONTENTS
Section 1-1: Safety—Safety and Operator Conveniences....24
  Safety and Operator Convenience Features....25
Section 1-2: Safety—General Precautions....26
  Recognize Safety Information....27
  Follow Safety Instructions....28
  Operate Only If Qualified....29
  Wear Protective Equipment....30
  Avoid Unauthorized Machine Modifications....31
  Add Cab Guarding for Special Uses....32
  Inspect Machine....33
  Stay Clear of Moving Parts....34
  Avoid High-Pressure Fluids....35
  Avoid High-Pressure Oils....36
  Work In Ventilated Area....37
  Prevent Fires....38
  Clean Debris from Machine....39
  Prevent Battery Explosions....40
  Handle Chemical Products Safely....41
  Dispose of Waste Properly....42
  Prepare for Emergencies....43
Section 1-3: Safety—Operating Precautions....44
  Use Steps and Handholds Correctly....45
  Start Only From Operator's Seat....46
  Use and Maintain Seat Belt....47
  Prevent Unintended Machine Movement....48
  Avoid Work Site Hazards....49
  Keep Riders Off Machine....51
  Avoid Backover Accidents....52
  Avoid Machine Tip Over....53
  Use Special Care When Lifting Objects....55
  Add and Operate Attachments Safely....56
  Prevent Unintended Detonation of Explosive Devices....57
Section 1-4: Safety—Maintenance Precautions....58
  Park and Prepare for Service Safely....59
  Service Cooling System Safely....60
  Remove Paint Before Welding or Heating....61
  Make Welding Repairs Safely....62
  Drive Metal Pins Safely....63
Section 1-5: Safety—Safety Signs....66
  Replace Safety Signs....66
  Safety Signs....66
  Safety Signs Installed in Cab—Hydraulic Coupler—If Equipped....67
  Safety Signs Installed on Hydraulic Coupler—Hydraulic Coupler (If Equipped)....68
Section 2-1: Operation—Operator's Station....69
  Pedals, Levers, and Panels....70
  Front Switch Panel....72
  Front Switch Panel Functions....73
  Rear Panel....75
  Horn....76
  Pilot Shutoff Lever....77
  Left Console....78
  Travel Alarm and Travel Alarm Cancel Switch....80
  Seat Heater Switch—If Equipped....81
  Reversing Cooling Fan Switch—If Equipped....82
  Cab Heater and Air Conditioner....83
  Selecting Display Between Celsius and Fahrenheit....85
  Operating the AM/FM Radio....86
  Secondary Exit Tool....87
  Opening Upper Front (Secondary Exit) Window....88
  Removing and Storing the Lower Front Window....89
  Opening Cab Door Window....91
  Opening and Closing the Polycarbonate Type Roof Exit Cover....92
  Adjusting the Mechanical Suspension Seat....93
  Adjusting the Air Suspension Seat—If Equipped....95
  Adjusting Pilot Control Lever Console Height....97
Section 2-2: Operation—Monitor Operation....98
  Monitor....99
  Monitor Functions....101
  Monitor Start-Up....103
  Main Menu....105
  Time Set Menu....106
  Selecting an Attachment From Default Screen....108
  Selecting an Attachment From Main Menu....110
  Attachment Specification Screen....113
  Pump 2 Flow Rate Adjustment....115
  Displaying Operating Conditions....117
  Maintenance Settings....120
  Screen Display When Scheduled Maintenance is Due....126
  Fuel Rate Display/No Display....129
  Language Settings....131
  Alarm Occurrence Screen....134
Section 2-3: Operation—Operating the Machine....141
  Before Starting Work....142
  Operator's Daily Machine Check Before Starting....143
  Engine Break-In Period....145
  Starting Engine....392
  Cold Weather Start Aid—If Equipped....149
  Cold Weather Warm-Up....151
  Travel Pedals and Levers....153
  Locking the Hydraulic Coupler to the Attachment....155
  Unlocking the Hydraulic Coupler From the Attachment....157
  Control Lever Pattern Operation....159
  Mechanical Control Lever Pattern Selector—If Equipped....161
  Control Lever Pattern Conversion....163
  Operating Blade—If Equipped....165
  Operating In Water and Mud....166
  Driving Up a Steep or Slippery Slope....167
  Lifting....168
  Lower Boom With Engine Stopped....169
  Parking the Machine....171
  Loading and Unloading for Transport....172
  Long Arm Setup for Transport or Operation—If Equipped....174
  Towing....175
  Lifting Machine....176
Section 3-1: Maintenance—Machine....178
  Diesel Fuel....179
  Lubricity of Diesel Fuel....181
  Handling and Storing Diesel Fuel....182
  Biodiesel Fuel....183
  Testing Diesel Fuel....185
  Minimizing the Effect of Cold Weather on Diesel Engines....186
  Alternative and Synthetic Lubricants....188
  Diesel Engine Oil — Tier 3 and Stage IIIA....189
  Diesel Engine Oil and Filter Service Intervals....215
  Hydraulic Oil....193
  Swing Gear Case and Travel Gear Case Oils....195
  Track Adjuster, Working Tool Pivot, Swing Bearing, and Swing Bearing Gear Grease....196
  Diesel Engine Coolant (engine with wet sleeve cylinder liners)....197
  Drain Intervals for Diesel Engine Coolant....199
  John Deere COOL-GARD™ II Coolant Extender....200
  Supplemental Coolant Additives....201
  Operating in Warm Temperature Climates....202
  Additional Information About Diesel Engine Coolants and John Deere COOL-GARD™ II Coolant Extender....203
  Testing Diesel Engine Coolant....205
Section 3-2: Maintenance—Periodic Maintenance....206
  Service Machine at Specified Intervals....207
  Check the Hour Meter Regularly....208
  Prepare Machine for Maintenance....209
  Open Access Doors for Service....210
  Open Engine Hood....211
  Fuel Tank....212
  Hydraulic Breaker and Crusher Attachments....213
  Fluid Analysis Program Test Kits and 3-Way Coolant Test Kit....214
  Service Intervals....215
  Required Parts....217
Section 3-3: Maintenance—As Required....219
  Remove and Clean Fuel Tank Inlet Screen....220
  Drain Water and Sediment from Fuel Tank Sump....243
  Drain Water Separator Filter....244
  Clean Radiator Air Inlet Screens....223
  Check and Clean Air Cleaner Dust Unloader Valve....225
  Check Windshield Washer Fluid Level....226
  Check and Adjust Track Sag....227
  Check Coolant....294
  Drain Auxiliary Fuel Filter and Water Separator—If Equipped....232
Section 3-4: Maintenance—Every 10 Hours or Daily....233
  Check Engine Oil Level....234
  Check Engine Coolant Level....236
  Check Hydraulic System Oil Level....237
  Lubricate Hydraulic Coupler—If Equipped....239
Section 3-5: Maintenance—Initial Service - 50 Hours....240
  Inspect and Re-Torque Track Hardware....263
Section 3-6: Maintenance—Every 50 Hours or Weekly....242
  Drain Water and Sediment from Fuel Tank Sump....243
  Drain Water Separator Filter....244
Section 3-7: Maintenance—Every 100 Hours....245
  Lubricate Working Tool Pivots....246
Section 3-8: Maintenance—Initial Service - 250 Hours....247
  Drain and Refill Engine Break-In Oil and Replace Filter....248
Section 3-9: Maintenance—Every 250 Hours....250
  Check and Adjust Air Conditioner Belt....251
  Check Swing Gear Case Oil Level....253
  Drain Hydraulic Oil Tank Sump....254
  Check Battery Electrolyte Level and Terminals....256
  Check Travel Gear Case Oil Level....259
  Clean Primary Air Cleaner Element....260
  Take Engine Oil Sample....262
  Inspect and Re-Torque Track Hardware....263
Section 3-10: Maintenance—Every 500 Hours....265
  Lubricate Front End Pin Joints....266
  Grease Swing Bearing....269
  Grease Swing Bearing Gear....270
  Replace Water Separator Filter....271
  Replace Final Fuel Filter....272
  Replace Auxiliary Fuel Filter and Water Separator—If Equipped....273
  Drain and Refill Engine Oil and Replace Filter....275
  Check Air Intake Hoses....277
  Clean Cab Fresh Air and Cab Recirculation Air Filters....278
  Take Fluid Samples....280
Section 3-11: Maintenance—Every 1000 Hours....281
  Drain and Refill Swing Gear Case Oil....282
  Replace Hydraulic Oil Tank Filter....283
  Clean the Engine Crankcase Ventilation Tube....286
  Replace Pilot Oil Filter....287
  Inspect Serpentine Belt....289
  Replace Primary Air Cleaner....290
  Replace Air Cleaner Dust Valve....293
  Check Coolant....294
Section 3-12: Maintenance—Every 2000 Hours....295
  Check and Adjust Engine Valve Lash....296
  Drain and Refill Travel Gear Case Oil....297
Section 3-13: Maintenance—Every 4000 Hours....299
  Replace Engine Crankshaft Dampener....300
Section 3-14: Maintenance—Every 5000 Hours....301
  Drain and Refill Hydraulic System Oil....302
  Replace Hydraulic Tank Vent Cap Filter....307
Section 3-15: Maintenance—Every 6000 Hours....309
  Drain Cooling System....310
  Cooling System Fill and Deaeration Procedure....312
Section 4-1: Miscellaneous—Machine....313
  Bleed Fuel System....314
  Do Not Service or Adjust Injection Nozzles or High Pressure Fuel Pump....316
  Do Not Service Control Valves, Cylinders, Pumps, or Motors....317
  Precautions for Alternator and Regulator....318
  Handling, Checking, and Servicing Batteries Carefully....319
  Using Booster Batteries—24-Volt System....322
  Using Battery Charger....323
  Replacing Batteries....325
  Adding 12-Volt Accessories....326
  JDLink™ Machine Monitoring System (MMS)—If Equipped....327
  Replacing Fuses....328
  Fluid Sampling Test Ports—If Equipped....333
  Welding On Machine....334
  Clean the Machine Regularly....335
  Replacing Bucket Teeth....336
  Replacing Bucket Tooth Tip—Heavy-Duty Bucket....338
  Replacing Bucket Teeth—TK Series....340
  Removing the Bucket....341
  Track Sag General Information....342
  Unified Inch Bolt and Screw Torque Values....343
  Metric Bolt and Screw Torque Values....345
Section 4-2: Miscellaneous—Operational Checkout....348
  Operational Checkout....348
Section 4-3: Miscellaneous—Troubleshooting....390
  Using Troubleshooting Charts....391
  Engine....392
  Electrical System....397
  Hydraulic System....400
Section 4-4: Miscellaneous—Storage....402
  Prepare Machine for Storage....403
  Monthly Storage Procedure....405
Section 4-5: Miscellaneous—Machine Numbers....407
  Record Product Identification Number (PIN)....408
  Record Engine Serial Number....409
  Record Travel Motor Serial Numbers....410
  Record Swing Motor Serial Number....411
  Record Hydraulic Pump Serial Number....412
  Hydraulic Coupler Serial Number—If Equipped....413
  Keep Proof of Ownership....414
  Keep Machines Secure....415
Section 4-6: Miscellaneous—Specifications....416
  120D Engine Specifications....417
  120D Drain and Refill Capacities....418
  120D Machine Specifications....419
  120D Working Ranges....421
  Lift Capacity—120D, Arm: 2.52 m (8 ft 3 in.), Shoe: 500 mm (20 in.)....423
  Lift Capacity—120D, Arm: 2.52 m (8 ft 3 in.), Shoe: 600 mm (24 in.)....426
  Lift Capacity—120D, Arm: 2.52 m (8 ft 3 in.), Shoe: 700 mm (28 in.)....429
  Lift Capacity—120D, Arm: 3.01 m (9 ft 11 in.), Shoe: 500 mm (20 in.)....432
  Lift Capacity—120D, Arm: 3.01 m (9 ft 11 in.), Shoe: 600 mm (24 in.)....435
  Lift Capacity—120D, Arm: 3.01 m (9 ft 11 in.), Shoe: 700 mm (28 in.)....438
 
John Deere 120D Excavator Operator's Manual (OMT237811)