John Deere 844J Loader Engine 6125HDW03 Operator’s Manual – PDF DOWNLOAD

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John Deere 844J Loader Engine 6125HDW03 Operator’s Manual – PDF DOWNLOAD

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John Deere 844J Loader Engine 6125HDW03 Operator’s Manual – PDF DOWNLOAD

P/N: OMT207807_RS
Language: English
Division: Construction
Product Lines: Loaders
Publication Type: Operator’s Manuals
Associated Models: 844J
Series: J SERIES

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere 844J Loader Engine 6125HDW03 Operator’s Manual – PDF DOWNLOAD

Contents 5
Safety—Safety and Operator Conveniences 9
Safety and Operator Convenience Features 9
Safety—General Precautions 10
Recognize Safety Information 10
Follow Safety Instructions 10
Operate Only If Qualified 10
Wear Protective Equipment 10
Avoid Unauthorized Machine Modifications 11
Add Cab Guarding For Special Uses 11
Inspect Machine 11
Stay Clear of Moving Parts 12
Avoid High-Pressure Fluids 12
Avoid High-Pressure Oils 12
Work In Ventilated Area 13
Prevent Fires 13
Clean Debris from Machine 14
Prevent Battery Explosions 14
Handle Chemical Products Safely 15
Dispose of Waste Properly 15
Prepare for Emergencies 15
Safety—Operating Precautions 17
Use Steps and Handholds Correctly 17
Start Only From Operator’s Seat 17
Use and Maintain Seat Belt 17
Prevent Unintended Machine Movement 17
Avoid Work Site Hazards 17
Use Special Care When Operating Loader 18
Keep Riders Off Machine 18
Avoid Backover Accidents 19
Avoid Machine Tip Over 19
Operating on Slopes 20
Operating or Traveling On Public Roads 20
Inspect and Maintain ROPS 21
Add and Operate Attachments Safely 21
Prevent Unintended Detonation of Explosive Devices 21
Safety—Maintenance Precautions 22
Park and Prepare for Service Safely 22
Service Cooling System Safely 22
Service Tires Safely 22
Remove Paint Before Welding or Heating 23
Make Welding Repairs Safely 23
Drive Metal Pins Safely 24
Safety—Safety Signs 25
Safety Signs 25
Operation—Operator’s Station 27
Operator Controls 27
Pedals 27
CAN Monitor Unit (CMU) 28
Monitor Panel Functions 29
Switch Pad 32
Switch and Accessory Functions 32
Monitor Display Unit—Key Off 34
Monitor Display Unit—Normal Display 34
Monitor Display Unit—Main Menu 36
Monitor Display Unit—Main Menu—Codes 36
Monitor Display Unit—Main Menu—Codes—Active Codes 36
Monitor Display Unit—Main Menu—Codes—Stored Codes 37
Monitor Display Unit—Main Menu—Machine Settings 38
Monitor Display Unit—Main Menu—Machine Settings—Quick Shift 38
Monitor Display Unit—Main Menu—Machine Settings—Auto to 1st 39
Monitor Display Unit—Main Menu—Machine Settings—Job Timer 39
Monitor Display Unit—Main Menu—Machine Settings—Stopwatch 40
Monitor Display Unit—Main Menu—Machine Settings—Ride Control 40
Monitor Display Unit—Main Menu—Diagnostics 40
Monitor Display Unit—Main Menu—Diagnostics—Battery Monitor 41
Monitor Display Unit—Main Menu—Diagnostics—Engine Sensors 41
Monitor Display Unit—Main Menu—Diagnostics—Transmission 42
Monitor Display Unit—Main Menu—Diagnostics—Hydraulic 43
Monitor Display Unit—Main Menu—Diagnostics—Machine 44
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches 44
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches—Cab 45
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches—Brak 45
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches—Tran 46
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches—Stee 46
Monitor Display Unit—Main Menu—Diagnostics—Machine Switches—Misc 47
Monitor Display Unit—Main Menu—Diagnostics—Switch Module 47
Monitor Display Unit—Main Menu—Diagnostics—Machine I D 47
Monitor Display Unit—Main Menu—Monitor Settings 48
Monitor Display Unit—Main Menu—Monitor Settings—Units 48
Monitor Display Unit—Main Menu—Monitor Settings—Hide Main Menu 49
Monitor Display Unit—Main Menu—Monitor Settings—Backlighting 49
Monitor Display Unit—Main Menu—Monitor Settings—LCD Contrast 49
Horn Button 50
Turn Signals 50
Air Conditioning Controls and Heater Operation 51
Adjusting Steering Wheel Tilt 51
Adjusting Joystick Steering Arm Rest 52
Opening and Securing Side Door 52
Opening Side Window/Secondary Exit 53
Opening Rear Side Window 54
Adjusting Seat 54
Operation—Operating the Machine 56
Inspect Machine Daily Before Starting 56
Engine Break-In Period 56
Check Instruments Before Starting 56
Starting the Engine 57
Starting Fluid—If Equipped (Cold Weather Starting Aid) 58
Engine Heater—If Equipped 59
Using Coolant Heater—If Equipped 60
Warm-Up 60
Cold Weather Warm-Up 60
Neutral Lock 60
Shifting the Transmission 60
Quick Shift Switch 61
Joystick Steering Activation/Deactivation 62
Park Brake Switch 64
Boom and Bucket Control Lever—One Lever Design 65
Boom and Bucket Control Lever—Two Lever Design 66
Ride Control—If Equipped 67
Secondary Steering—If Equipped 68
Boom Height Kickout Adjustment 69
Return-to-Carry Kickout Adjustment 69
Return-To-Dig Adjustment 69
Using the Loader Bucket 70
Backdragging 71
Parking the Machine 72
Loading Machine on a Trailer 72
Towing Procedure 74
Lifting the Machine—If Equipped With Lift Hooks 76
Maintenance—Machine 77
Diesel Fuel 77
Lubricity of Diesel Fuel 77
Handling and Storing Diesel Fuel 77
Biodiesel Fuel 78
Testing Diesel Fuel 79
Minimizing the Effect of Cold Weather on Diesel Engines 79
Low Sulfur Diesel Fuel Conditioner 80
Alternative and Synthetic Lubricants 81
Diesel Engine Break-In Oil 81
Diesel Engine Oil 81
Diesel Engine Oil and Filter Service Intervals 82
Hydraulic Oil 83
Axle Gear Lubricant 84
Transmission and Park Brake Oil 84
Grease 85
Heavy Duty Diesel Engine Coolant 85
Drain Intervals for Diesel Engine Coolant 86
John Deere COOL-GARD™ II Coolant Extender 86
Supplemental Coolant Additives 87
Operating in Warm Temperature Climates 87
Additional Information About Diesel Engine Coolants and John Dee 88
Testing Diesel Engine Coolant 89
Maintenance—Periodic Maintenance 91
Service Machine at Specified Intervals 91
Check Hour Meter Regularly 91
Prepare Machine for Maintenance 91
Locking Machine Frame 93
Supporting the Boom 93
Opening Engine Side Shields and Service Doors 93
Opening Grille Door 94
Fuel Tank 95
Check Windshield Washer Fluid Level 95
Fluid Analysis Program Test Kits and 3-Way Coolant Test Kit 95
Service Intervals 96
Required Parts 98
Maintenance—As Required 101
Check Tire Pressure 101
Tire Pressures (844J) 102
Tighten Wheel Retainer Nuts 102
Check Air Inlet Cover 103
Inspect Serpentine Belt 103
Inspect External Seal 103
Check Cab Fresh Air Filter—If Equipped 104
Check Cab Recirculating Air Filter 105
Inspect Air Conditioner Compressor and Alternator Belt 106
Check Coolant 106
Maintenance—Every 10 Hours or Daily 108
Check Coolant Recovery Tank Level 108
Clean Air Cleaner Dust Unloader Valve 108
Check Engine Oil Level 108
Check Hydraulic Oil Level 109
Check Transmission Oil Level 109
Inspect Split Seals—If Equipped 110
Maintenance—Every 100 Hours 112
Grease Loader Linkage and Cylinder Pivots (If Equipped) 112
Grease Front Steering Cylinder Pivots (S N —612719) 112
Grease Rear Steering Cylinder Pivots (S N —612719) 112
Grease Oscillating Rear Axle 113
Maintenance—Initial Service – 250 Hours 114
Change Front and Rear Axle Oil 114
Change Engine Break-In Oil and Replace Filter 115
Maintenance—Every 250 Hours 116
Take Engine Oil Sample 116
Maintenance—Every 500 Hours 117
Check Air Intake Hoses 117
Check Battery Electrolyte Level and Terminals 117
Check Radiator Coolant Level 119
Replace Primary and Final Fuel Filters 120
Replace In-Line Fuel Filter 121
Replace Fast Fuel Filter—If Equipped 121
Check Park Brake Oil Level 121
Change Engine Oil and Replace Filter 121
Take Fluid Samples 122
Maintenance—Every 1000 Hours 123
Replace Transmission Oil Filters 123
Replace Air Cleaner Dust Unloader Valve 123
Replace Air Cleaner Elements 124
Clean Engine Crankcase Vent Tube 124
Check Radiator Hoses 124
Replace Hydraulic System Return Filters 125
Replace Hydraulic Reservoir Breather Filter 125
Grease Frame Hinge Pivots 125
Change Park Brake Oil 126
Change Front and Rear Axle Oil 126
Inspect and Clean Hydraulic Pump Case Drain Fittings 126
Check Coolant 127
Maintenance—Every 2000 Hours 128
Change Transmission Oil 128
Check and Adjust Engine Valve Lash and Electronic Injector Prelo 129
Re-Run Clutch Calibration 129
Replace Spit Seals—If Equipped 129
Maintenance—Every 4000 Hours 130
Change Hydraulic System Oil 130
Clean Hydraulic System Fill Strainer 131
Replace Engine Torsional Dampener 132
Maintenance—Every 5000 Hours 133
Check Brake Wear 133
Inspect Drive Line Damper 133
Maintenance—Every 6000 Hours 134
Replace Engine Coolant 134
Miscellaneous—Machine 135
Checking Fuel Tank Vent Hose 135
Bleeding Fuel System 135
Drain Water Separator Bowl 135
Clean Water Separator Bowl 136
Checking Fire Extinguisher—If Equipped 136
Precautions for Alternator and Regulator 136
Handling, Checking, and Servicing Batteries Carefully 136
Using Booster Batteries—24-Volt System 138
Using Battery Charger 138
Removing and Installing Batteries 139
JDLink™ Machine Monitoring System (MMS)—If Equipped 140
JDLink™ Machine Monitoring System (MMS) Direct Laptop Connection 140
Replacing Fuses 141
Fuse (Blade-Type) Color Codes 144
Replacing Halogen Bulbs 144
Engine Speeds 146
Fluid Sampling Test Ports—If Equipped 146
Checking Neutral Start System 146
Servicing Air Conditioning System—If Equipped 147
Welding On Machine 147
Welding Near Electronic Control Units 147
Keep Electronic Control Unit Connectors Clean 147
Checking Brake Accumulators 148
Checking Ride Control Accumulator—If Equipped 149
Service Brake Bleeding Procedure 150
Cooling Package External Cleaning Procedure 151
Service Recommendations For Snap-To-Connect (STC®) Fittings 152
Do Not Service Control Valves, Cylinders, Pumps or Motors 154
Keep ROPS Installed Properly 154
Hardware Torque Specifications 154
Unified Inch Bolt and Screw Torque Values 154
Metric Bolt and Screw Torque Values 155
Miscellaneous—Operational Checkout 157
Operational Checkout 157
Key Switch OFF, Engine OFF Checks 157
Key Switch ON, Engine OFF Checks 158
Key Switch ON, Engine ON Checks 159
Miscellaneous—Troubleshooting 173
Troubleshooting Procedure 173
Engine 173
Fast Fill 175
Transmission 175
Differential And Axle 184
Service Brake 186
Drive Line 189
Park Brake 189
Hydraulic System 191
Air Conditioning System 199
Heater System 202
Miscellaneous—Storage 203
Prepare Machine for Storage 203
Monthly Storage Procedure 203
Miscellaneous—Machine Numbers 205
Record Product Identification Number (PIN) 205
Record Engine Serial Number 205
Record Transmission Serial Number 205
Record Hydraulic Pump Serial Number 205
Keep Proof of Ownership 206
Keep Machines Secure 206
Miscellaneous—Specifications 208
844J Loader Specifications 208
Drain and Refill Capacities—844J 210
Page Number 5
Section 1-1 9
Section 1-2 10
Section 1-3 17
Section 1-4 22
Section 1-5 25
Section 2-1 27
Section 2-2 56
Section 3-1 77
Section 3-2 91
Section 3-3 101
Section 3-4 108
Section 3-5 112
Section 3-6 114
Section 3-7 116
Section 3-8 117
Section 3-9 123
Section 3-10 128
Section 3-11 130
Section 3-12 133
Section 3-13 134
Section 4-1 135
Section 4-2 157
Section 4-3 173
Section 4-4 203
Section 4-5 205
Section 4-6 208

S.V 03/24