John Deere 4WD Loader 844J Workshop Repair Service Manual TM2307 PDF - MJODTM2307.zip
A full workshop service and repair manual for the John Deere 4WD Loader 844J, containing every piece of shop-level guidance you need to service, fix, and rebuild the machine just like trained dealership technicians.
The John Deere 4WD Loader 844J service repair workshop manual covers:
* 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.
TM2307 - John Deere 4WD Loader 844J Technical Manual (Repair).PDF
Total Pages: 816 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable, high quality)
Language: English
MAIN SECTIONS
Foreword
General Information
Safety Information
Wheels
Powered Wheels And Fasteners
Axles And Suspension Systems
Removal and Installation
Axle Shafts And U-Joints
Axle Shaft, Bearings, And Reduction Gears
Transmission
Remove and Install
Gears, Shafts, Bearings and Power Shift Clutch
Hydraulic System
Engine
Removal And Installation
Engine Auxiliary Systems
Cooling System
External Exhaust System
External Fuel Supply Systems
Steering System
Hydraulic System
Service Brakes
Hydraulic System
Park Brake
Active Elements
Hydraulic System
Frame or Supporting Structure
Frame Installation
Frame Bottom Guards
Chassis Weights
Operator`s Station
Removal and Installation
Operator Enclosure
Seat and Seat Belt
Heating and Air Conditioning
Sheet Metal and Styling
Hood or Engine Enclosure
Loader
Bucket
Frames
Hydraulic System
Dealer Fabricated Tools
tm2307 - 844J Loader
Table of Contents
Foreword
Section 00: General Information
Group 0001: Safety Information
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 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 Worksite Hazards
Use Special Care When Operating Loader
Keep Riders Off Machine
Avoid Backover Accidents
Avoid Machine Tip Over
Operating on Slopes
Operating or Traveling On Public Roads
Inspect and Maintain ROPS
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
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: Wheels
Group 0110: Powered Wheels And Fasteners
Wheel Remove and Install
Tire Remove and Install
Section 02: Axles And Suspension Systems
Group 0200: Removal and Installation
Front Axle Remove and Install
Rear Axle Remove and Install
Axle Oscillating Supports Disassemble and Assemble
Oscillating Support Wear Bushing Remove and Install
Group 0225: Axle Shafts And U-Joints
Universal Joint and Drive Shaft Remove and Install
Group 0250: Axle Shaft, Bearings, And Reduction Gears
Axle Planetary Gear Case Disassemble and Assemble
Differential Disassemble and Assemble
Section 03: Transmission
Group 0300: Remove and Install
Transmission Remove and Install
Group 0350: Gears, Shafts, Bearings and Power Shift Clutch
Torque Converter Input Shaft Remove and Install
Torque Converter and Housing Disassemble and Assemble
Transmission Drive One Remove and Install
Transmission Drive One Disassemble and Assemble
Transmission Drive Two Disassemble and Assemble
Transmission Drive Three Disassemble and Assemble
Secondary Steering Drive Disassemble and Assemble
Output Shaft Drive Disassemble and Assemble
Clutch Packs Remove and Install
Low Range Forward Clutch (KV) and First Speed Clutch (K1) Disassemble and Assemble
High Range Forward Clutch (K4) and Third Speed Clutch (K3) Disassemble and Assemble
Reverse Clutch (KR) and Second Speed Clutch (K2) Disassemble and Assemble
Low Range Forward Clutch (KV) and First Speed Clutch (K1) Bearing Preload Adjustment
High Range Forward Clutch (K4) and Third Speed Clutch (K3) Bearing Preload Adjustment
Reverse Clutch (KR) and Second Speed Clutch (K2) Bearing Preload Adjustment
Group 0360: Hydraulic System
Transmission Oil Pump Remove and Install
Transmission Oil Pump Disassemble and Assemble
Transmission Control Valve Remove and Install
Transmission Control Valve Disassemble and Assemble
Transmission Suction Screen Remove and Install
Section 04: Engine
Group 0400: Removal And Installation
POWERTECH POWERTECH is a trademark of Deere & Company 12.5 L (6125) John Deere Engines
Engine Remove and Install
Section 05: Engine Auxiliary Systems
Group 0510: Cooling System
Serpentine Belt Remove and Install
Charge Air Cooler Remove and Install
Radiator Remove and Install
Axle Oil Cooler Remove and Install
Hydraulic Oil Cooler Remove and Install
Transmission Oil Cooler Remove and Install
Cooling Package Plenum Remove and Install
Group 0530: External Exhaust System
Muffler Remove and Install
Group 0560: External Fuel Supply Systems
Fuel Tank and Fuel Tank Bottom Guard Remove and Install
Section 09: Steering System
Group 0960: Hydraulic System
Orbital Steering Valve Remove and Install
Orbital Steering Priority Valve Remove and Install
Orbital Steering Priority Valve Disassemble and Assemble
Joystick Steering Valve Remove and Install
Joystick Steering Valve Disassemble and Assemble
Steering Column Remove and Install
Steering Cylinder Remove and Install (S.N. —612719)
Steering Cylinder and Frame Bushings Remove and Instal (S.N. —612719)
Steering Cylinder Remove and Install (S.N. 612720— )
Steering Cylinder and Frame Bushings Remove and Install (S.N. 612720— )
Steering Cylinder Disassemble and Assemble
Secondary Steering Pump Remove and Install
Secondary Steering Manifold Remove and Install
Secondary Steering Manifold Disassemble and Assemble
Loader Start-Up Procedure
Section 10: Service Brakes
Group 1060: Hydraulic System
Brake Valve Remove and Install
Brake Accumulator Remove and Install
Section 11: Park Brake
Group 1111: Active Elements
Park Brake Remove and Install
Park Brake Disassemble and Assemble
Group 1160: Hydraulic System
Park Brake Release Solenoid Valve Remove and Install
Park Brake Pressure Switch Remove and Install
Section 17: Frame or Supporting Structure
Group 1740: Frame Installation
Welding Repair of Major Structure
Separate Engine and Loader Frame
Upper Pivot Bearing and Seals Remove and Install
Lower Pivot Bearing and Seals Remove and Install
Group 1746: Frame Bottom Guards
Transmission Bottom Guard Remove and Install
Group 1749: Chassis Weights
Counterweights Remove and Install
Section 18: Operator's Station
Group 1800: Removal and Installation
Cab Remove and Install
Group 1810: Operator Enclosure
Windowpanes Remove and Install
Cab Door Hold-Open Release Adjust
Front and Rear Windshield Wiper Remove and Install
Rivet Nut Installation
Group 1821: Seat and Seat Belt
Seat Remove and Install
Seat Belt Remove and Install
Joystick Armrest and Wiring Harness Remove and Install
Joystick Controller Assembly Remove and Install
Steering Joystick Disassemble and Assemble
Armrest Disassemble and Assemble
Tilt Pivot Disassemble and Assemble
Rear Pivot Tightening
Group 1830: Heating and Air Conditioning
Air Conditioning System Fittings Reference Chart
R134a 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
Compressor Clutch—R134a Disassemble and Assemble
Check Clutch Hub Clearance—R134a
Condenser Remove and Install
Receiver/Dryer Remove and Install
Heater and Air Conditioner Remove and Install
Heater/Evaporator Coil Remove and Install
Expansion Valve Remove and Install
Freeze Control Switch Remove and Install
Heater Control Valve Remove and Install
Heater Control Valve Leak Check
Main Blower Assembly Remove and Install
Pressurizer Motor Assembly Remove and Install
Section 19: Sheet Metal and Styling
Group 1910: Hood or Engine Enclosure
Hood Remove and Install
Rear Hood Remove and Install
Engine Side Shields Remove and Install
Section 31: Loader
Group 3102: Bucket
Bucket Remove and Install
Welded Bucket Cutting Edges Remove and Install
Bolt On Bucket Cutting Edge and Bucket Guard Remove and Install
Cracked Cutting Edge Repair
Bucket Teeth with Segmented Cutting Edge Remove and Install
Bucket Wear Plate Remove and Install
Bucket Spill Guard Remove and Install
Rock Bucket Disassemble and Assemble
Rock Kicker Remove and Install
Group 3140: Frames
NeverGrease™ Pin Joints
Bucket Tilt Linkage Remove and Install
Bucket Linkage Seals and Bushings Remove and Install
Boom Remove and Install
Boom Bushings and Seals Remove and Install
Group 3160: Hydraulic System
Hydraulic Pump Start-Up Procedure
Hydraulic Pump 1 Remove and Install
Hydraulic Pump 2 Remove and Install
Hydraulic Pump 3 Remove and Install
Hydraulic Pump 1, 2 and 3 Disassemble and Assemble
Loader Control Valve Remove and Install
Loader Control Valve Disassemble and Assemble
Auxiliary Valve Section and Bucket Valve Section Disassemble and Assemble
Boom Section Disassemble and Assemble
System Relief Valve Disassemble and Assemble
Circuit Relief Valve Disassemble and Assemble
Service Auxiliary, Bucket and Boom Section Pilot Orifice Check Valve
Boom Cylinder Remove and Install
Bucket Cylinder Remove and Install
Boom and Bucket Cylinder Bushings and Seals Remove and Install
Boom or Bucket Cylinder Disassemble and Assemble
Loader Start-Up Procedure
Hydraulic System Manifold Remove and Install
Hydraulic System Manifold Disassemble and Assemble
Boom Down Accumulator Remove and Install
Single Lever (Joystick) Pilot Control Valve Remove and Install
Pilot Control Valve Disassemble and Assemble
Two Lever (Fingertip) Pilot Control Valve Remove and Install
Hydraulic Oil Reservoir Remove and Install
Hydraulic Return Manifold Remove and Install
Ride Control Valve Remove and Install
Ride Control Valve Disassemble and Assemble
Ride Control Accumulator Remove and Install
Pin Disconnect Valve Remove and Install
Pin Disconnect Valve Disassemble and Assemble
Fan Motor Remove and Install