Complete service repair manual for John Deere 120D Excavator, with all the workshop information to maintain, repair, rebuild like professional mechanics.

John Deere 120D Excavator workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

TM10737 - John Deere 120D Excavator Technical Manual (Repair).pdf
tm11489 - John Deere Excavadora 120D.pdf
tm11488 - John Deere Excavatrice 120D.pdf

Total Pages: 623 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)
Category: Repair
Language: Spanish French English

MAIN SECTIONS
Foreword
   Technical Information Feedback Form
   General Information
      Safety
      Torque Values
   Tracks
      Track System
   Axles and Suspension Systems
      Axle Shaft, Bearings, and Reduction Gears
      Hydraulic System
   Engine
      Removal and Installation
   Engine Auxiliary Systems
      Cooling System
      Intake System
      External Fuel Supply Systems
   Dampener Drive (Flex Coupling)
      Elements
   Frame or Supporting Structure
      Frame Installation
      Chassis Weights
   Operator’s Station
      Removal and Installation
      Operator Enclosure
      Seat and Seat Belt
      Heating and Air Conditioning
   Bulldozers (Backfill Blade)
      Blades
      Hydraulic System
   Excavator
      Buckets
      Frames
      Hydraulic System
   Swing or Pivoting System
      Mechanical Drive Elements
      Hydraulic System
   Dealer Fabricated Tools
   
tm10737 - 120D Excavator
Table of Contents
Foreword
Technical Information Feedback Form
Section 00: General Information
Group 0001: Safety
Recognize Safety Information
Follow Safety Instructions
Operate Only If Qualified
Wear Protective Equipment
Avoid Unauthorized Machine Modifications
Add Cab Guarding for Special Uses
Inspect Machine
Stay Clear of Moving Parts
Avoid High-Pressure Fluids
Avoid High-Pressure Oils
Beware of Exhaust Fumes
Prevent Fires
Prevent Battery Explosions
Handle Chemical Products Safely
Dispose of Waste Properly
Prepare for Emergencies
Use Steps and Handholds Correctly
Start Only From Operator's Seat
Use and Maintain Seat Belt
Prevent Unintended Machine Movement
Avoid Work Site Hazards
Keep Riders Off Machine
Avoid Backover Accidents
Avoid Machine Tip Over
Use Special Care When Lifting Objects
Add and Operate Attachments Safely
Prevent Unintended Detonation of Explosive Devices
Park and Prepare for Service Safely
Service Cooling System Safely
Remove Paint Before Welding or Heating
Make Welding Repairs Safely
Drive Metal Pins Safely
Group 0003: Torque Values
Metric Bolt and Cap Screw Torque Values
Additional Metric Cap Screw Torque Values
Unified Inch Bolt and Cap Screw Torque Values
Service Recommendations for 37° Flare and 30° Cone Seat Connectors
Service Recommendations for O-Ring Boss Fittings
O-Ring Boss Fittings in Aluminum Housing Service Recommendations—Excavators
Service Recommendations for Flared Connections—Straight or Tapered Threads
Service Recommendations for Flat Face O-Ring Seal Fittings
O-Ring Face Seal Fittings With SAE Inch Hex Nut and Stud End for High-Pressure Service Recommendations
O-Ring Face Seal Fittings With Metric Hex Nut and Stud End for Standard Pressure Service Recommendations
O-Ring Face Seal Fittings With Metric Hex Nut and Stud End for High-Pressure Service Recommendations
Service Recommendations for Metric Series Four Bolt Flange Fitting
Service Recommendations For Inch Series Four Bolt Flange Fittings
Inch Series Four Bolt Flange Fitting for High-Pressure Service Recommendations
Service Recommendations For Non-Restricted Banjo (Adjustable) Fittings
Service Recommendations For O-Ring Boss Fittings With Shoulder
Metric 24° O-Ring Seal DIN 20078 Service Recommendations
Section 01: Tracks
Group 0130: Track System
Track Roller Remove and Install
Track Roller Disassemble and Assemble
Track Roller Pressure Test
Track Carrier Roller Remove and Install
Inspect Metal Face Seals
Track Shoe Remove and Install
Track Chain Remove and Install
Track Chain Disassemble and Assemble
Track Chain Repair
Sprocket Remove and Install
Front Idler Remove and Install
Front Idler Disassemble and Assemble
Track Adjuster and Recoil Spring Remove and Install
Track Adjuster and Recoil Spring Disassemble and Assemble
Track Adjuster Cylinder Disassemble and Assemble
Section 02: Axles and Suspension Systems
Group 0250: Axle Shaft, Bearings, and Reduction Gears
Travel Gearbox Remove and Install
Travel Gearbox Disassemble and Assemble
Group 0260: Hydraulic System
Travel Motor and Park Brake Remove and Install
Travel Motor and Park Brake Disassemble and Assemble
Travel Motor Cover Disassemble and Assemble
Travel Motor Crossover Relief Valve Disassemble and Assemble
Travel Speed Change Solenoid Valve Remove and Install
Travel Motor and Park Brake Start-Up Procedure
Section 04: Engine
Group 0400: Removal and Installation
PowerTech E™ 4.5 L and 6.8 L (4045 and 6068) John Deere Engines
Engine Remove and Install
Section 05: Engine Auxiliary Systems
Group 0510: Cooling System
Radiator Remove and Install
Hydraulic Oil Cooler Remove and Install
Intercooler Remove and Install
Fuel Cooler Remove and Install
Fan, Fan Guard, and Fan Shroud Remove and Install
Coolant Surge Tank Remove and Install
Group 0520: Intake System
Air Cleaner Remove and Install
Group 0560: External Fuel Supply Systems
Fuel Tank Remove and Install
Primary Fuel Filter (Water Separator) Remove and Install
Final Fuel Filter Remove and Install
Section 07: Dampener Drive (Flex Coupling)
Group 0752: Elements
Dampener Drive (Flex Coupling) Remove and Install
Section 17: Frame or Supporting Structure
Group 1740: Frame Installation
Welding On Machine
Welding Repair of Major Structure
Group 1749: Chassis Weights
Counterweight Remove and Install
Section 18: Operator’s Station
Group 1800: Removal and Installation
Cab Remove and Install
Group 1810: Operator Enclosure
Sliding Window Remove and Install
Windowpanes Remove and Install
Windowpanes Dimensions
Group 1821: Seat and Seat Belt
Seat Remove and Install
Seat Belt Remove and Install
Mechanical Suspension Seat Disassemble and Assemble
Air Suspension Seat Disassemble and Assemble
Left and Right Console Covers Remove and Install
Group 1830: Heating and Air Conditioning
Refrigerant Cautions and Proper Handling
Flush and Purge Air Conditioner System
R134a Refrigerant Oil Information
R134a Refrigerant Recovery/Recycling and Charging Station Installation Procedure
Recover R134a Refrigerant
Evacuate R134a System
Charge R134a System
Compressor Remove and Install
Condenser Remove and Install
Heater and Air Conditioner Remove and Install
Receiver-Dryer Remove and Install
Section 32: Bulldozers (Backfill Blade)
Group 3201: Blades
Blade Remove and Install
Group 3260: Hydraulic System
Blade Pump Remove and Install
Blade Pump Pressure Relief Valve Remove and Install
Blade Control Valve Remove and Install
Blade Control Valve Disassemble and Assemble
Blade Pilot Controller Remove and Install
Blade Pilot Controller Disassemble and Assemble
Blade Cylinder Remove and Install
Blade Cylinder Disassemble and Assemble
Section 33: Excavator
Group 3302: Buckets
Bucket Remove and Install
Bucket Pin-Up Data
Group 3340: Frames
Bucket Links Remove and Install
Arm Remove and Install
Boom Remove and Install
Inspect Pins, Bushings, and Bosses—Front Attachment
Bushings and Seal Remove and Install
Group 3360: Hydraulic System
Apply Vacuum to Hydraulic Oil Tank
Hydraulic Oil Cleanup Procedure With Portable Filter Caddy
Pump 1 and 2 Remove and Install
Pump 1 and 2 Disassemble and Assemble
Pump 1 and 2 Inspection
Pump 1 and 2 Start-Up Procedure
Pump 1 and 2 Regulator Remove and Install
Pump 1 and 2 Regulator Disassemble and Assemble
Pilot Pump Remove and Install
Pilot Pump Disassemble and Assemble
Pilot Pressure Regulating Valve and Filter Remove and Install
Pilot Pressure Regulating Valve and Filter Disassemble and Assemble
Pilot Shutoff Solenoid Valve Remove and Install
Pilot Shutoff Solenoid Valve Disassemble and Assemble
Fan Drive Pump Remove and Install
Fan Drive Motor Remove and Install
Fan Drive Standard Control Valve Remove and Install
Fan Drive Reversing Control Valve Remove and Install
Fan Drive Reversing Control Valve Disassemble and Assemble
Solenoid Valve Manifold Remove and Install
Travel Speed and Arm Regenerative Solenoid Valve Disassemble and Assemble
Pilot Valve (Left and Right) Remove and Install
Pilot Valve (Left and Right) Disassemble and Assemble
Travel Pilot Valve Remove and Install
Travel Pilot Valve Disassemble and Assemble
Pilot Signal Manifold Remove and Install
Pilot Signal Manifold Disassemble and Assemble
Control Valve Remove and Install
Control Valve Separation
Control Valve (5-Spool) Disassemble and Assemble
Control Valve (4-Spool) Disassemble and Assemble
Hydraulic Oil Tank Remove and Install
Hydraulic Oil Tank Disassemble and Assemble
Restriction Valve Remove and Install
Hydraulic Oil Cooler Bypass Valve Remove and Install
Boom Cylinder Remove and Install
Boom Cylinder Disassemble and Assemble
Arm Cylinder Remove and Install
Arm Cylinder Disassemble and Assemble
Bucket Cylinder Remove and Install
Bucket Cylinder Disassemble and Assemble
Hydraulic Cylinder Bleed Procedure
Section 43: Swing or Pivoting System
Group 4350: Mechanical Drive Elements
Swing Gearbox Remove and Install
Swing Gearbox Disassemble and Assemble
Swing Gearbox Start-Up Procedure
Upperstructure Remove and Install
Swing Bearing Remove and Install
Swing Bearing Disassemble and Assemble
Swing Bearing Upper Seal Install
Swing Bearing Lower Seal Install
Group 4360: Hydraulic System
Center Joint Remove and Install
Center Joint Disassemble and Assemble
Center Joint Air Test
Swing Motor and Park Brake Remove and Install
Swing Motor and Park Brake Disassemble and Assemble
Swing Motor and Park Brake Inspection
Swing Motor and Park Brake Start-Up Procedure
Crossover Relief Valve and Make-Up Check Valve Remove and Install
Swing Park Brake Release Valve Remove and Install
Section 99: Dealer Fabricated Tools
Group 9900: Dealer Fabricated Tools
DF1063 Lift Bracket
ST4920 Track Recoil Spring Disassembly and Assembly Tool
DFT1087 Track Recoil Spring Disassembly and Assembly Guard Tool
DFT1112 Spacer
DFT1130 Adapter
DFT1036A Travel Gear Case Nut Wrench
DFT1109 Holding Bar
Center Joint (Rotary Manifold) Lifting Tool
DFT1304 Guide Pin
DFT1119 Pump Support
DFT1237 Swing Gear Case Nut Spanner Wrench

John Deere 120D Excavator Repair Technical Manual (TM10737)