Complete Diagnostics, Operation and Test manual with electrical wiring diagrams for John Deere 750 Excavators, with workshop information to maintain, diagnose, and service like professional mechanics.

John Deere 750 Excavators workshop Operation and Test 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.

TM1809 - John Deere 750 Excavator Technical Manual - Operation and Test Service.PDF
TM1809 - John Deere 750 Excavator Technical Manual - Operation and Test Service.EPUB

PRODUCT DETAILS:
Total Pages: 991 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
   Foreword
   Technical Information Feedback Form
   General Information
      Safety
      General Specifications
      Torque Values
      Fuels and Lubricants
      Predelivery Assembly Instructions
   Operational Checkout Procedure
      Operational Checkout Procedure
   Engine
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostic
      References
   Power Train
      Theory of Operation
      Diagnostic Information
      Adjustments
   Hydraulic System
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests
   Air Conditioning System
      Theory of Operation
      Diagnostic Information
      Adjustments
      Tests

tm1809 - 750 Excavator Operation and Test

Table of Contents

Foreword

Technical Information Feedback Form

Section 9000: General Information

Group 01: Safety

Follow Safe Procedures

Prepare for Emergencies

Handle Fluids Safely-Avoid Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Prevent Acid Burns

Avoid High-Pressure Fluids

Warn Others of Service Work

Park Machine Safely

Support Machine Properly

Operate Only from Operator's Seat

Stay Clear of Moving Parts

Avoid Power Lines

Use Handholds and Steps

Keep Riders Off Machine

Move and Operate Machine Safely

Wear Protective Clothing

Protect Against Flying Debris

Protect Against Noise

Illuminate Work Area Safely

Service Machines Safely

Remove Paint Before Welding or Heating

Avoid Heating Near Pressurized Fluid Lines

Beware of Exhaust Fumes

Use Proper Lifting Equipment

Service Cooling System Safely

Dispose of Waste Properly

Work in a Clean Area

Use Tools Properly

Replace Safety Signs

Live With Safety

Group 02: General Specifications

750 Excavator Overview

750 Excavator

Working Ranges

Engine Specifications

Drain and Refill Capacities

Lift Capacity-KG (LB)

Group 03: Torque Values

Hardware Torque Specifications

Unified Inch Bolt and Cap Screw Torque Values

Metric Bolt and Cap Screw Torque Values

Additional Metric Cap Screw Torque Values

Check Oil Lines And Fittings

Service Recommendations for O-Ring Boss Fittings

Service Recommendations For Flat Face O-Ring Seal Fittings

Service Recommendations for 37° Flare and 30° Cone Seat Connectors

Service Recommendations For Flared Connections-Straight or Tapered Threads

Service Recommendations For Inch Series Four Bolt Flange Fittings

Service Recommendations for Metric Series Four Bolt Flange Fitting

Group 04: Fuels and Lubricants

Diesel Fuel

Lubricity of Diesel Fuels

Low Sulfur Diesel Fuel Conditioner

Diesel Fuel Storage

Fuel Tank

Do Not Use Galvanized Containers

Grease

Diesel Engine Oil

Hydraulic Oil

Swing Gearbox, Propel Gearbox and Pump Gearbox Oils

Track Roller, Front Idler, and Carrier Roller Oil

Track Adjuster, Working Tool Pivot, Swing Bearing, and Swing Bearing Gear Grease

Oil Filters

Lubricant Storage

Alternative and Synthetic Lubricants

Mixing of Lubricants

Group 06: Predelivery Assembly Instructions

Precautions for Assembling

Precautions for Lifting Work

Precautions for Operating Machine

Avoid High-Pressure Fluids

Installing Boom Cylinder

Installing Boom

Connecting Hoses Between Boom and Machine

Connecting Boom Cylinder Rod

Installing Arm

Connecting Arm Cylinder Rod

Connecting Bucket Cylinder Hoses

Installing Bucket

Adjusting Bucket Linkage

Attach Windshield Wiper

Retracting the Side Frame

Extending the Side Frame

Check Hydraulic Oil Level

Lubricate Working Tool Pivots

Installing Counterweight (Without Hydraulic Removal Option)

Counterweight Installation (With Hydraulic Removal Option)

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

14L (875 cu. in.) N14 Series Cummins Engine

Engine Component Location

Engine Speed Control System Operation

Speed Sensing Control and Super Power (S/P) Mode Operation

Auto-Idle Mode Speed Control Operation

E (Economy) Mode Speed Control Operation

Quick Idle Control

Engine Speed Learning Control Operation

Group 15: Diagnostic Information

Diagnose Engine Malfunctions

Group 20: Adjustments

Inspect Belts and Check Tension

Engine Speed Check

Engine Speed Control Linkage Adjustment

Engine Speed Learning Procedure

Group 25: Tests

Air Filter Restriction Indicator Switch Test

Radiator Cap Pressure Test

Fuel Pressure Test

Cooling Differential Temperature Test

Engine Power Test Using Turbocharger Boost Pressure

Section 9015: Electrical System

Group 05: System Information

Electrical System Visual Inspection

Electrical Circuit Malfunctions

High Resistance Circuit

Open Circuit

Grounded Circuit

Shorted Circuit

Sensor Circuit Shorted to Power

Sensor Circuit Shorted to Itself

Sensor Circuit Shorted to Ground

Multimeter

Seven Step Electrical Test Procedure

Schematic, Wiring Diagram, and Component Location Information

Reading a System Functional Schematic

Reading a Wiring Diagram

Reading a Component Location Diagram

Reading a Connector End View Diagram

Electrical Schematic Symbols

Group 10: System Diagrams

Fuse Specifications

Fuse (Blade-Type) Color Codes

Component Identification Table

Functional Schematic and Component Location Master Legend

System Functional Schematic Section Legend

System Functional Schematic (SE1-SE3)

System Functional Schematic (SE4-SE6)

System Functional Schematic (SE7-SE9)

System Functional Schematic (SE10-SE12)

System Functional Schematic (SE13-SE15)

System Functional Schematic (SE16-SE18)

System Functional Schematic (SE19-SE21)

System Functional Schematic (SE22)

Engine and Frame Harness (W1) Component Location Diagram

Engine and Frame Harness (W1) Component Location-Detail A (Monitor Controller Connectors)

Engine and Frame Harness (W1) Wiring Diagram

Cab Harness (W2) Component Location Diagram

Cab Harness (W2) Component Location Diagram-Detail D (Fuse Block)

Cab Harness (W2) Component Location Diagram-Detail E (Harness Mating Connectors)

Cab Harness (W2) Wiring Diagram

Monitor and Relay Harness (W3) Component Location Diagram

Monitor and Relay Harness (W3) Component Location Diagram-Detail A (Monitor Controller Connectors)

Monitor and Relay Harness (W3) Component Location Diagram-Detail B (Monitor Controller Indicators)

Monitor and Relay Harness (W3) Wiring Diagram

Air Conditioning Harness (W9) Component Location Diagram

Air Conditioning Harness (W9) Wiring Diagram

Solenoid Harness (W11) Component Location Diagram

Solenoid Harness (W11) Wiring Diagram

Fuel Gauge Harness (W12) Component Location Diagram

Fuel Gauge Harness (W12) Wiring Diagram

Cab Light Harness (W13) Component Location Diagram

Cab Light Harness (W13) Wiring Diagram

Left Boom Work Light Harness (W14) and Right Boom Work Light Harness (W15) Component Location Diagram

Left Boom Work Light Harness (W14) and Right Boom Work Light Harness (W15) Wiring Diagram

Counterweight Removal and Install Harness (W16) Component Location Diagram (Optional)

Counterweight Removal and Install Harness (W16) Wiring Diagram (Optional)

Group 15: Sub-System Diagnostic

Power Circuit Operational Information

Power Circuit Theory of Operation

Power Circuit Schematic

Starting and Charging Circuit Operational Information

Starting and Charging Circuit Theory of Operation

Starting and Charging Circuit Schematic

Fuel Shutoff and Start Aid Circuit Specifications

Fuel Shutoff and Start Aid Circuit Operational Information

Fuel Shutoff and Start Aid Circuit Theory of Operation

Fuel Shutoff and Start Aid Circuit Schematic

Monitor Controller and Display Circuit Specifications

Monitor Controller and Display Circuit Operational Information

Monitor Controller and Display Circuit Theory of Operation

Monitor Controller and Display Circuit Schematic

Optional Connector Circuit Operational Information

Optional Connector Circuit Theory of Operation

Optional Connector Circuit Schematic

Engine Controller Circuit Specifications

Engine Controller Circuit Operational Information

Engine Controller Circuit Theory of Operation

Engine Controller Circuit Schematic

Pump and Valve Controller Circuit Specifications

Pump and Valve Controller Circuit Operational Information

Pump and Valve Controller Circuit Theory of Operation

Pump and Valve Controller Circuit Schematic

Travel Alarm Circuit Specifications

Travel Alarm Circuit Operational Information

Travel Alarm Circuit Theory of Operation

Travel Alarm Circuit Schematic

Windshield Wiper and Washer Circuit Operational Information

Windshield Wiper And Washer Circuit Theory of Operation

Windshield Wiper And Washer Circuit Schematic

Work and Drive Light Circuit Operational Information

Work and Drive Light Circuit Theory of Operation

Work and Drive Light Circuit Schematic

Radio Circuit Operational Information

Radio Circuit Theory of Operation

Radio Circuit Schematic

Accessory Circuit Operational Information

Accessory Circuit Theory of Operation

Accessory Circuit Schematic

Lubricator Circuit Operational Information

Lubricator Circuit Theory of Operation

Lubricator Circuit Schematic

Group 20: References

Battery Operation

Battery Specifications

Diagnose Battery Malfunctions

Check Battery Electrolyte Level and Terminals

Procedure for Testing Batteries

Using Booster Batteries-24 Volt System

Replacing Batteries

Adding 12 or 24 Volt Accessories

Engine Speed Learning Procedure

Engine Control Systems

Pump Control Systems

Work Mode Control Systems

Laptop Computer General Description

Excavator Diagnostic Software Overview

Excavator Diagnostics Program-Install

Excavator Diagnostics Program-Uninstall

Excavator Diagnostics Program-Starting

Excavator Diagnostic Software Feature-Service Codes

Excavator Diagnostic Software Feature-Monitor Data

Excavator Diagnostics Program Feature-Saving Monitor Data

Excavator Diagnostic Software Special Function-Angle Sensor

Service Codes for Engine Controller (EC)

Service Codes for Pump and Valve Controller (PVC)

Monitor Data Items

Excavator Diagnostics Program Troubleshooting

Reading Service Codes Without JT07290 Laptop Computer

Engine Speed Programming Procedure After Battery Disconnection

Engine Speed Sensor Adjustment

Engine Controller (EC) Sensor Voltage Adjustment

Pump Angle Sensor Adjustment

Electronic Component Diagnostic Procedure

Troubleshooting Engine Controller (EC)

Troubleshooting Pump and Valve Controller (PVC)

Electronic Control Bypass Procedure

Connecting Engine Controller (EC) and Pump and Valve Controller (PVC) Harness Connector

Disconnect Tab Retainer Connectors

Disconnecting Spring Wire Clip Connectors

Section 9020: Power Train

Group 05: Theory of Operation

Track Adjuster Operation

Propel Gearbox Operation

Group 15: Diagnostic Information

Diagnose Undercarriage Component Malfunctions

Measure Track Chain Bushing Wear

Measure Track Chain Link Wear

Measure Track Chain Pitch

Measure Track Shoe Grouser Wear

Measure Lower Track Roller Wear

Measure Track Carrier Roller Wear

Measure Front Idler Wear

Group 20: Adjustments

Swing Bearing Wobble Test

Track Sag Adjustment

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Schematic

Pilot Pump and Filter Operation

Solenoid Valve Manifold and Pilot Pressure Regulating Valve Operation

Pilot Shut-Off Valve Operation

Check Block Operation

Accumulator

Pilot Controller Operation-Neutral

Counterweight or Propel Pilot Controller Operation

Flow Regulator Valve Operation

Propel Flow Regulator Valve Operation

Main Control Valve Operation

Control Valve

Control Valve Cross Section

Control Valve Check Valve Identification and Function

Control Valve Check Valves Schematic

Control Valve Check Valve Cross Section

Power Boost Circuit

System Relief Valve Operation

Circuit Relief-Anti-Cavitation

Make-Up Valve Operation

Reduced Leakage Valve

Flow Combiner Valve Circuit Operation

Flow Combiner Valve Schematic

Flow Sensing Valve

Propel Work Circuit

Bucket I and Bucket II Work Circuits

Boom Up Work Circuit

Boom Down Work Circuit

Arm In Work Circuit

Arm Out Work Circuit

Arm Regenerative Valve

Swing Work Circuit

Swing Valve and End Section

Combined Operation Propel and Swing

Combined Function Swing and Boom Up-Dig Mode II

Combined Function Swing and Boom Up-Dig Mode

Swing Motor Operation

Swing Motor Crossover Relief Valve Operation

Swing Park Brake Release Circuit Operation

Swing Gearbox Operation

Cylinder Operation

Counterweight Remove and Install Operation

Pump Drive Gearbox

Main Hydraulic Pump

Pump Displacement Increasing-Maximum

Pump Displacement Decreasing-Minimum

Pump Displacement Solenoid Valve

Propel Circuit Operation

Propel Speed Control System

Propel Motor Operation

Propel Motor-Slow Speed

Propel Motor-Fast Speed

Counterbalance Valve-Propel

Counterbalance Valve-Braking

Propel Brake Operation

Propel Motor Crossover Relief Valve Operation

Rotary Manifold

Pump Inlet and Delivery Circuits

Return Circuit Operation

Hydraulic Schematic

Propel System

Group 15: Diagnostic Information

Diagnostic Procedure

Introduction to Flow Charts

Machine Malfunctions and Possible Causes

Hydraulic System

Control Valve Component and Line Identification

Pilot Circuit-SAE Pattern Component Location

Main Hydraulic System Component Location

Pilot System-SAE Pattern Component Location

Pilot System-JD Pattern Component Location

Counterweight Removal and Install Component Location (Optional)

Hydraulic Pump Angle Sensor Mechanical Check Diagnostic Procedure

Group 20: Adjustments

Pilot Shut-Off Valve Linkage Adjustment

Pump Angle Sensor Adjustment

Group 25: Tests

JT05801 Clamp-On Electronic Tachometer Installation

JT05800 Digital Thermometer Installation

JT02156A Digital Pressure and Temperature Analyzer Installation

Hydraulic System Warm-Up Procedure

Hydraulic Oil Filter Inspection Procedure

Hydraulic Oil Cleanup Procedure Using Portable Filter Caddy

Hydraulic Pump Start-Up Procedure

Swing Motor Start-Up Procedure

Swing Gearbox Start-Up Procedure

Propel Motor Start-Up Procedure

Hydraulic Oil Tank Venting Procedure

Cycle Time Test

Combined Boom Up and Swing Function Test

Pilot Pressure Regulating Valve Test and Adjustment

Valve Spool Actuating Pilot Pressure Test

Power Boost Solenoid Valve (SA) Pressure Test

Propel Speed Change Solenoid Valve (SB) Pressure Test

Swing Priority Solenoid Valve Pressure Test

System Relief Valve and Power Boost Test and Adjustment

Circuit Relief Valve Test and Adjustment

Swing Motor Crossover Relief Valve Test and Adjustment

Propel Motor Crossover Relief Valve Test and Adjustment

Arm, Boom, and Bucket Cylinder Drift Test

Propel Motor Leakage Test

Swing Motor Leakage Test

Pilot Pump Flow Test

Hydraulic Pump Flow Test

Section 9031: Air Conditioning System

Group 05: Theory of Operation

Proper Refrigerant Handling

R134a Refrigerant Cautions

Refrigerant Theory of Operation

Heater and Air Conditioner Circuit Operational Information

Heater and Air Conditioner Circuit Theory of Operation

Heater and Air Conditioner Circuit Schematic

Receiver/Dryer Operation

Expansion Valve Operation

Compressor Relief Valve Operation

Heater and Air Conditioner Controller Operation

Group 15: Diagnostic Information

Heating and Air Conditioning Circuit Diagnostic Checks

Diagnose Air Conditioning Electrical Malfunctions

Diagnose Heater System Malfunctions

Air Conditioner Component Location Diagram

Air Conditioner Harness (W9) Component Location Diagram

Group 20: Adjustments

Proper Refrigerant Handling

R134a Refrigerant Cautions

R134a Compressor Oil Charge Check

R134a Compressor Oil Removal

R134a Component Oil Charge

R134a Refrigerant Recovery, Recycling, and Charging Station Installation Procedure

Recover R134a System

Evacuate R134a System

Charge R134a System

Check and Adjust Compressor Belt Tension

Group 25: Tests

R134a Refrigerant Cautions

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

High and Low Pressure Switch Test

Leak Testing

Refrigerant Hoses and Tubing Inspection

John Deere 750 Excavators Operation and Test Service Service Manual (TM1809)