John Deere 623 644 Hay and Forage Round Balers Technical Service Manual TM300319

John Deere 623 644 Hay and Forage Round Balers Technical Service Manual TM300319

Format: PDF
Language: English
Manual: Technical Manual, Service Manual
Covered Models: John Deere 623 644
Page: 519 Pages

Illustrated Factory Diagnostic and Repair Technical Service Manual for John Deere Hay and Forage Round Balers Models 623 and 644
This manual contains high quality images, circuit diagrams, instructions to help you to maintenance, trounleshooting, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.
Contents
Foreword
Safety
Safety Information
General
Serial Numbers
Torques for Hardware
Lubrication
General Information
Electrical System – Repair
Connectors
Sensors, Switches and Potentiometers
Actuators
ELC Plus Monitor (Electronic Tying Control)
BaleTrak Control Monitor
Power Train
Walterscheid Powerline
Cam-Type Cut Out Clutch
Gear Case (Baler with 540 rpm Gear Case)
Gear Case (Baler with 1000 rpm Gear Case)
Chain Tension
Braking System – Repair
Air Brakes
Hydraulic Brakes
Brake Shoe and Drum
Hydraulic System – Repair
General Information
Bale Density Control Valve (623 Silage and 644 Balers)
Bale Density Control Valve (623 MultiCrop Baler)
Bale Density Booster Device
Hydraulic Cylinders
Gate Locking Valve
Rotary Feeder Hydraulic Components with ELC Monitor
Rotary Feeder Hydraulic Components with BaleTrak Control Monitor
Miscellaneous
Wheel Hub Repair
Bale Shape or Bale Full-Size Indicator
Drop Floor Position Indicator
Tongue
Lubrication System – Repair
Drive Chain Lubrication
Pickup Repair
Pickup Drive Components
Precutter Device
Adjustment
Conveyor (MultiCrop Baler)
Repair
Net Tying
Repair
Twine Tying
Repair
Diagnostic Trouble Codes For BaleTrak Control
Description
Battery Voltage
Right Bale Shape Potentiometer R4
Left Bale Shape Potentiometer R3
Twine Actuator M1
Net Actuator M2
Pickup Valve Y4
Knife Valve Y3
Drop Floor Valve Y2
Gear Case RPM Sensor S6
Twine Pulley Sensors S7/S8
Net Cut Sensor S4
Right Oversize Bale (Gate) Switch S1
Full-Size Bale Switch S3
EPROM
Troubleshooting
Bale Density/Gate Control – Troubleshooting
Twine Tying – Troubleshooting
Chain Lubrication – Troubleshooting
Electrical System
General Information
Test Equipment
Electrical Diagram/Battery Wiring Harness
Electrical System/ELC Plus Monitor
Electrical Diagram/ELC Plus Control
Electrical System/BaleTrak Monitor
Electrical Diagram/BaleTrak Control
Diagnostic Modes
Lubrication System – Operation and Tests
Air Brake System Operation and Tests
Hydraulic Brake System Operation and Tests
Hydraulic Brake System – Description
Hydraulic Brake System – Tests
Hydraulic System Operation and Tests
Bale Density/Gate Control – Description
Bale Density/Gate Control – Tests
Rotary Feeder Hydraulic System without Precutter Device – Description
Rotary Feeder Hydraulic System without Precutter Device – Tests
Rotary Feeder Hydraulic System with Precutter Device – Description
Rotary Feeder Hydraulic System with Precutter Device – Tests
Special Tools – Dealer-Fabricated