Complete Diagnosis & Tests Technical Manual with electrical wiring diagrams for John Deere Tractors Models 7405 (2WD or MFWD), with all the workshop information to maintain, diagnose, repair, adn rebuild like professional mechanics.

John Deere 2WD or MFWD Tractors Models 7405 workshop Diagnosis & Tests technical 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.

TM6015 - John Deere Tractors Models 7405 Technical Manual (Diagnosis and Tests).pdf
TM6015 - John Deere Tractors Models 7405 Technical Manual (Diagnosis and Tests).epub

PRODUCT DETAILS:
Total Pages: 622 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
   Foreword
   Safety
      Safety Precautions
   Engine
      Dynamometer Test
   Fuel, Air Intake and Cooling Systems
      System Diagnosis
      System Tests
      Fuel System
      Air Intake System
      Cooling System
      Cold Weather Starting Aids
   Electrical System
      System Information
      System Diagrams
      Sub-System Diagnostics Lights
      Component Tests
   PowrQuad Transmission
      Operational Checks
      System Diagnosis
      Adjustments
      Theory of Operation - PowrQuad Transmission
   Drive Systems
      Operational Checks
      System Diagnosis
      System Tests
      Front Wheel Drive Clutch
      Differential
      Final Drives
      Rear PTO Options
   Steering and Brakes
      Operational Checks
      System de Diagnosis
      System Tests
      Theory of Operation (Complete System)
      Hydrostatic Steering
      Brakes
   Hydraulic System
      Operational Checks
      System Diagnosis in Hydraulic System
      System Tests
      Hydraulic Circuits
      Hydraulic System and Components

tm6015 - 7405 tractor

Table of Contents

Foreword

Section 210: Safety

Group 05: Safety Precautions

Safety Information

“Important” - Information

“Note” - Information

Handle Fluids Safely-Avoid Fires

Prevent Battery Explosions

Prepare for Emergencies

Prevent Acid Burns

Avoid High-Pressure Fluids

Park Machine Safely

Support Machine Properly

Wear Protective Clothing

Work in Clean Area

Service Machines Safely

Work in Ventilated Area

Illuminate Work Area Safely

Replace Safety Signs

Use Proper Lifting Equipment

Avoid Heating Near Pressurized Fluid Lines

Remove Paint Before Welding or Heating

Keep Rops Installed Properly

Service Tires Safely

Practice Safe Maintenance

Use Proper Tools

Dispose of Waste Properly

Live With Safety

Service Front-Wheel Drive Tractor Safely

Section 220: Engine

Group 10: Dynamometer Test

Engine Operation and Test

Preliminary Engine Test

Dynamometer Test

Section 230: Fuel, Air Intake and Cooling Systems

Group 10: System Diagnosis

Fuel System

Cooling System

Group 15: System Tests

Special or Essential Tools

Specifications

Testing Air Intake System

Testing Low-Pressure Switch in Air Intake System

Testing Cooling System for Leaks

CHecking Expansion Tank Cap

Group 20A: Fuel System

General Information

Description

Fuel Filter - Theory Operation

Group 20B: Air Intake System

Air Cleaner -Theory of Operation

Group 20C: Cooling System

General Information

Description of Radiator

Viscous Fan Drive - Theory of Operation

Group 20D: Cold Weather Starting Aids

General Information

Electrical Starting Aid - Theory of Operation

Fuel Preheater - Theory of Operation

Section 240: Electrical System

Group 05: System Information

Special or Essential Tools

Special Tools

Using Electrical Section

Battery Operation

Troubleshooting Battery

Procedure for Testing Batteries

Battery Specifications

CHecking Battery Electrolyte Level and Terminals

Electrical Circuit Malfunctions

Open Circuit

Grounded Circuit

Shorted Circuit

How to Read a Functional Schematic

How to Read a Wiring and Harness Diagram

Symbols in Functional Schematic, Wiring and Harness Diagrams

Symbols in Functional Schematic, Wiring and Harness Diagrams

Group 10: System Diagrams

Load Center

Section Designations in Functional Schematic

Functional Schematic (Complete Tractor)

Functional Schematic (Complete Tractor) - Contd.

Functional Schematic (Complete Tractor) - Contd.

Functional Schematic (Complete Tractor) - Contd.

Functional Schematic (Complete Tractor) Contd.

Functional Schmetic (Complete Tractor) - Cont.

Functional Schematic (Complete Tractor) Contd.

System Diagram/Main Harness Wiring (Engine)

Group 15: Sub-System Diagnostics Lights

Special Essential Tools

Starting Circuit (SE1)

Starting Circuit Operational Information

Starting Circuit Theory of Operation

Power Supply (SE1 + SE5)

Power Circuit Operational Information

Power Circuit Theory of Operation

Charging System Operational Information

SE1-Starting Motor and Charging Circuit

Charging Circuit Theory of Operation

Power Supply (SE1+SE5)

SE2-Rear PTO

SE3-Mechanical Front Wheel Drive

SE3-Front Wheel Drive

SE4-Differential Lock

SE4-Differential Lock - Theory of Operation

SE6-Lighting and Warning Flasher

SE6-Lights

Lighting Circuit Operation

SE6-Hazard Warning Flasher and Turn Signal Lights

SE7- Instrumentation

SE7- Instrument Unit and Lighting

SE8 - Power Outlet Socket

SE8-Terminal Power Outlet Socket, 7-Terminal Socket

SE9 - Electronic Rockshaft Control

Group 25: Component Tests

Special or Essential Tools

Specifications

Specifications

SE1- SE5 Starting Motor and Charging Circuit

SE7-Instrument Unit

Voltage Checks

SE2-Rear PTO

Voltage Checks

SE3-Front Wheel Drive

Voltage Checks

SE10-Differential Lock

Voltage Checks

SE6-Lights

Voltage Checks

Voltage Checks

Section 255: PowrQuad Transmission

Group 05: Operational Checks

Group 10: System Diagnosis

Use Step-By-Step Hydraulic Diagnostic Charts

Special Essential Tools

Other Material

Observe Safety Precautions

Avoid High-Pressure Fluids

Adjust for Correct Pressure and Temperature References

Shortened Diagnostic Procedure

Major System Checks

Other Malfunctions

Group 15: Adjustments

Adjusting Shift Linkage

Adjusting Parking Lock

Adjusting Reverse Drive Linkage

Group 20: Theory of Operation - PowrQuad Transmission

PowrQuad Transmission Schematic-Early Version (Component Identification)

Guide to PowrQuad Transmission Theory

PowrQuad Transmission

Planetary Operation

Test Port and Sensor Identification

Air Pump

Transmission Oil Pump

Clutch Oil Manifold

Reverse Brake Housing

Filter Relief Valve

Pressure Regulating Valve

Speed Control Circuit

EOV Circuit (With Mechanical Reverser Control)

Shift Lever Moved From Forward or Reverse to Neutral:

Traction Clutch Cooling Oil Components

Oil Cooler System

Low-Pressure Clutch Cooling Valve

FWD-REV Cooling Control Valve

High-Pressure Clutch Cooling Valve

Clutch Pedal Control of Cooling Flow:

Cooler and Lube Circuits

Module Lube

Module Lube Flow Paths

Clutch Cooling Circuit Operation

Oil Cooler

Creeper Transmission Operation

Range Box

PowrQuad Transmission (Symbols)

Section 256: Drive Systems

Group 05: Operational Checks

Checking Rear PTO

Group 10: System Diagnosis

Mechanical Front Wheel Drive

Differential

Final Drives

Rear PTO

Group 15: System Tests

Safety Precautions

Special or Essential Tools

Specifications

Heating up Hydraulic Oil

Testing System Pressure of MFWD Clutch

Testing System Pressure of Hydraulic Differential Lock

Testing Rear PTO

Testing Lube Pressure of FWD Clutch, Differential Lock and PTO

Group 20A: Front Wheel Drive Clutch

Layout

Oil and Power Flows With Front Wheel Drive Engaged

Oil and Power Flows With Front Wheel Drive Disengaged

Group 20B: Differential

Layout

Power Flow When Moving Straight Ahead

Power Flow When Cornering

Oil Flow With Differential Locked Engaged

Oil Flow Differential Lock Disengaged

Group 20C: Final Drives

Final Drive Operation

Group 20D: Rear PTO Options

Description of Rear PTO Options

PTO Modulating Valve and Solenoid Valve

PTO Clutch and Brake

Lube Cut-Off Valve

PTO Power Flow (540/1000 RPM, Reversible)

Section 260: Steering and Brakes

Group 05: Operational Checks

Checking Steering

CHecking Brakes

CHecking Handbrake

Group 10: System de Diagnosis

Hydrostatic Steering

Hydraulic Brakes

Group 15: System Tests

Special or Essential Tools

Checking Steering System for External Leakage

CHecking Steering System for Internal Leakage

Testing Leaf Springs of Steering Valve

Checking Steering Valve for Leakage

Steering Valve Hydraulic Connections

Testing and Adjusting Shock Valves

Checking Brake System

CHecking Brakes for Air in the System

CHecking Brakes for External Leakage

Checking Brake Valve for Internal Leakage

Checking Brakes

Bleeding Brakes

Group 20: Theory of Operation (Complete System)

Description

Group 20A: Hydrostatic Steering

Description of Steering Valve

Operation of Metering Unit

Oil Flow in Steering System

Oil Flow - Neutral Position

Oil Flow - Emergency Steering

Various Types of Steering Valve

Group 20B: Brakes

Brake Pistons, Plates and Disks Operation

Steering and Brakes Theory of Operation/Brakes Released

Steering and Brakes Theory of Operation/Brakes Released

Steering and Brakes Theory of Operation/Braking Prefill

Steering and Brakes Theory of Operation/Braking Prefill

Steering and Brakes Theory of Operation/Braking Engaging

Steering and Brakes Theory of Operation/Braking Engaging

Section 270: Hydraulic System

Group 05: Operational Checks

Explanation of Operational Checks

Safety Precautions

Operational Checks on Rockshaft Control

Group 11: System Diagnosis in Hydraulic System

Explanation of System Diagnosis

Safety Precautions

Special or Essential Tools

Connecting Testers to Test Ports

Heating up Hydraulic Oil

Specifications

Test Sequence

System Diagnosis in Hydraulic Circuit

Information on System Diagnosis

Hydraulic System Response to a Missing Shuttle Valve

Measuring Flow Rate of Hydraulic Pump

Test Result Table

Group 15: System Tests

Explanation of the Hydraulic Tests

Safety Precautions

Special or Essential Tools

Heating up Hydraulic Oil

CHecking and Adjusting (Calibrating) Rockshaft Control

Checking withTthe Performance Monitor

Abbreviations Used in the Display

Designation of Controls

Test Sequence

Error Code List

Error Code List (Continued)

Error Code List (Continued)

Diagnostic Mode List

Diagnostic Mode List

Identification of Electronic Control Unit (HCU)

Calibration Program

Additional Checks

Checking and Adjusting Draft Sensor

Group 20: Hydraulic Circuits

Hydraulic Symbols

Description of Hydraulic System

Hydraulic Circuit - Theory of Operation

Hydraulic System and Components/Operation of Hydraulic System

Hydraulic System and Components/Operation of Hydraulic System

Description of Hydraulic Pump* Constant flow pump

Layout of Oil Lines

Hydraulic Pump - Theory of Operation

Hydraulic Oil Filter With Filter Relief Valve

Oil Cooler

Primary Filter

Shuttle Valves - Theory of Operation

Main Block With Inlet Priority Valve and By-Pass Valve

Inlet Priority Valve and By-Pass Valve - Theory of Operation

Hitch Control Valve

Pressure and Return Solenoid Valves On (No Signal from HCU)

Pressure and Return Solenoid Valves Off (Signal from HCU)

Hitch Control Valve - Neutral Position

Pressure Compensator Valve

Load Check Valve

Surge Relief Valve

Hitch Load-Sense Check Valve

Hitch Operation-Raising

Hitch Operation-Raised

Hitch Operation-Stopped

Hitch Operation-Lower

Hitch OperationFull Lower

Three Point Hitch Hydraulic Operation

Hitch Controls

Electro-Hydraulic Hitch Circuit

Electro-Hydraulic Hitch Circuit-Continued

Hitch Control Unit (HCU)

Operator Controls

Hitch Control Lever

Load/Depth Control Potentiometer

Rate-of-Drop Control Potentiometer

Raise Limit Control Potentiometer

Console Raise/Lower Rocker Switch

Hitch Sensing Devices

Hitch Position Feedback Sensor

Load/Draft Sensor

Group 25: Hydraulic System and Components

Selective Control Valves

101 Series Selective Control Valve-Neutral Position

101 Series SCV - Extend

101 Series SCV - Retract

101 Series SCV - Float Position

301 Series Selective Control Valve-Neutral

301 Series Selective Control Valve - Extend

301 Series Selective Control Valve-Retract

301 Series Selective Control Valve-Float

Quick Couplers

John Deere Tractors Models 7405 Diagnosis and Tests Service Technical Manual (TM6015)