Complete service repair manual for John Deere 50G, with all the service information to maintain, repair, and rebuild like professional mechanics.

John Deere 50G Compact 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.
* 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.

TM12888 (14FEB19) - John Deere 50G Compact Excavator (PIN 1FF050GX_ _H280001— ) Technical Manual - Repair.PDF
TM12888 - John Deere 50G Compact Excavator Technical Manual - Repair.epub
TM12888 - John Deere 50G Compact Excavator Technical Manual - Repair.pdf

Total Pages: 426 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS  50G (PIN: 1FF050GX**H280001—)
 Foreword
   Technical Information Feedback Form
   General Information
      Safety
      Torque Values
   Tracks
      Track System
   Axles and Suspension Systems (Travel)
      Axle Shaft, Bearings, and Reduction Gears
      Hydraulic System
   Engine
      Removal and Installation
   Engine Auxiliary System
      Cooling Systems
      External Exhaust Systems
      External Fuel Supply Systems
   Damper 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
   Blade (Backfill)
      Blades
      Hydraulic System
   Excavator
      Buckets
      Frames
      Hydraulic System
   Swing or Pivoting System
      Mechanical Drive Elements
      Hydraulic System
   Dealer Fabricated Tools

tm12888 - 50G 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

Control Pattern Selector—If Equipped

Add Cab Guarding for Special Uses

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Avoid High-Pressure Oils

Work In Ventilated Area

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Decommissioning — Proper Recycling and Disposal of Fluids and Components

Exhaust Filter Ash Handling and Disposal

Prepare for Emergencies

Clean Debris from Machine

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

Inspect and Maintain ROPS

Avoid Machine Tip Over

Use Special Care When Lifting Objects

Add and Operate Attachments Safely

Park and Prepare for Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Clean Exhaust Filter 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

Service Recommendations for Flared Connections—Straight or Tapered Threads

Service Recommendations for Flat Face O-Ring Seal Fittings

O-Ring Boss Fittings in Aluminum Housing Service Recommendations—Excavators

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

Rubber Track Remove and Install

Track Shoe Remove and Install

Track Chain Remove and Install

Track Chain Disassemble and Assemble

Track Chain Repair to Replace Broken Part

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

Section 02: Axles and Suspension Systems (Travel)

Group 0250: Axle Shaft, Bearings, and Reduction Gears

Travel Gear Case Remove and Install

Travel Gear Case Disassemble and Assemble

Group 0260: Hydraulic System

Travel Motor and Park Brake Remove and Install

Travel Motor and Park Brake Disassemble and Assemble

Travel Anticavitation Valve Remove and Install

Park Brake Valve Disassemble and Assemble

Travel Motor and Park Brake Start-Up Procedure

Section 04: Engine

Group 0400: Removal and Installation

Engine Remove and Install

Section 05: Engine Auxiliary System

Group 0510: Cooling Systems

Radiator Remove and Install

Hydraulic Oil Cooler Remove and Install

Fan, Fan Guard, and Fan Shroud Remove and Install

Coolant Recovery Tank Remove and Install

Group 0530: External Exhaust Systems

Diesel Particulate Filter (DPF) Remove and Install

Exhaust Filter Remove and Install

Exhaust Filter Disassemble and Assemble

Group 0560: External Fuel Supply Systems

Fuel Tank Remove and Install

Primary Fuel Filter and Water Separator Housing Remove and Install

Final Fuel Filter Housing Remove and Install

Section 07: Damper Drive (Flex Coupling)

Group 0752: Elements

Damper Drive (Flex Coupling) Remove and Install

Section 17: Frame or Supporting Structure

Group 1740: Frame Installation

Welding on Machine

Group 1749: Chassis Weights

Counterweight Remove and Install

Section 18: Operator's Station

Group 1800: Removal and Installation

Cab Remove and Install

Canopy Remove and Install

Platform Remove and Install

Group 1810: Operator Enclosure

Windshield Remove and Install

Windshield Disassemble and Assemble

Windowpanes Remove and Install

Windowpanes Dimensions

Group 1821: Seat and Seat Belt

Seat Remove and Install

Seat Belt Remove and Install

Left and Right Console Covers Remove and Install

Group 1830: Heating and Air Conditioning

Refrigerant Cautions and Proper Handling

Flush and Purge Air Conditioning System

R134a Refrigerant Oil Information

R134a Refrigerant Recovery, Recycling, and Charging Station Installation Procedure

R134a Compressor Oil Charge Check

R134a Compressor Oil Removal

Recover R134a Refrigerant

Evacuate R134a System

Charge R134a System

Air Conditioner Compressor Remove and Install

Condenser Remove and Install

Heater and Air Conditioner Remove and Install

Receiver-Dryer Remove and Install

Section 32: Blade (Backfill)

Group 3201: Blades

Blade Remove and Install

Blade Disassemble and Assemble

Angle Blade Remove and Install—If Equipped

Angle Blade Frame Remove and Install—If Equipped

Angle Blade and Frame Disassemble and Assemble—If Equipped

Group 3260: Hydraulic System

Blade Cylinder Remove and Install

Blade Pilot Valve Remove and Install

Blade Pilot Valve Disassemble and Assemble

Angle Blade Cylinder Remove and Install—If Equipped

Angle Blade Solenoid Valve Remove and Install—If Equipped

Angle Blade Solenoid Valve Disassemble and Assemble—If Equipped

Section 33: Excavator

Group 3302: Buckets

Bucket Remove and Install

Bucket Pin-Up Data

Group 3340: Frames

Bucket Links Remove and Install

Bucket Quick Coupler Remove and Install

Arm Remove and Install

Boom Remove and Install

Boom Swing Post Remove and Install

Inspect Pins and Bushings—Front Attachment and Blade

Cylinder Specifications

Bushing and Seal Remove and Install

Group 3360: Hydraulic System

Apply Vacuum to Hydraulic Oil Tank

General Hydraulic Oil Cleanup Procedure

Hydraulic Component Failure Cleanup Procedure

Hydraulic Pump Remove and Install

Hydraulic Pump Disassemble and Assemble

Pilot Pump Remove and Install

Pilot Pump Disassemble and Assemble

Hydraulic Pump Start-Up Procedure

Engine Speed Sensing Valve Remove and Install

Engine Speed Sensing Valve Disassemble and Assemble

Pilot Pressure Regulator and Solenoid Valve Manifold Remove and Install—Pilot Shutoff and Travel Speed Solenoids

Pilot Pressure Regulator and Solenoid Valve Manifold Disassemble and Assemble—Pilot Shutoff and Travel Speed Valves

Air Conditioner Torque Control Solenoid Valve Remove and Install

Air Conditioner Torque Control Solenoid Valve Disassemble and Assemble

Exhaust Filter Regulator Solenoid Valve Remove and Install

Exhaust Filter Regulator 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

Boom Swing Pilot Valve Remove and Install

Boom Swing Pilot Valve Disassemble and Assemble

Control Valve Remove and Install

Control Valve Disassemble and Assemble

Control Lever Pattern Selector Remove and Install

Control Lever Pattern Selector Disassemble and Assemble

Hydraulic Oil Tank Remove and Install

Hydraulic Oil Tank Disassemble and Assemble

Back Pressure Valve Remove and Install

Hydraulic Oil Cooler Bypass Valve Remove and Install (S.N. —281876)

Hydraulic Oil Cooler Bypass Valve Remove and Install (S.N. 281877— )

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

Boom Swing Cylinder Remove and Install

Boom Swing Cylinder Disassemble and Assemble

Blade Lift Cylinder Disassemble and Assemble

Angle Blade Cylinder Disassemble and Assemble—If Equipped

Hydraulic Cylinder Bleed Procedure

Section 43: Swing or Pivoting System

Group 4350: Mechanical Drive Elements

Swing Gear Case Remove and Install

Swing Gear Case Disassemble and Assemble

Upperstructure Remove and Install

Swing Bearing Remove and 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 Start-Up Procedure

Crossover Relief Valve and Make-Up Check Valve Remove and Install

Section 99: Dealer Fabricated Tools

Group 9900: Dealer Fabricated Tools

ST4920 Track Recoil Spring Disassembly and Assembly Tool

DFT1087 Track Recoil Spring Disassembly and Assembly Guard Tool

DFT1110 Spacer

DFT1187 Bearing Driver

John Deere 50G Compact Excavator Repair Service Manual (TM12888)