John Deere 12.5 L Marine Diesel Engines Operator’s Manual PDF

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John Deere 12.5 L Marine Diesel Engines (PowerTech™) Operator’s Manual – PDF DOWNLOAD

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John Deere 12.5 L Marine Diesel Engines (PowerTech™) Operator’s Manual – PDF DOWNLOAD

P/N: OMRG35863_71
Language: English
Division: Construction
Product Lines: Engines
Publication Type: Operator’s Manuals
Associated Models: 12.5L, 6125
Series: POWERTECH
Serial: MARINE ENGINES (2004– )
Additional Information: POWERTECH 6125AFM75 and 6125SFM75 Marine Engines; Manual covers 12.5L marine diesel (models 6125AFM75 and 6125SFM75) engines produced in the year 2004 and later. For the earlier 12.5L marine diesel engines, refer to manual OMRG28994.

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TABLE OF CONTENTS:

John Deere 12.5 L Marine Diesel Engines (PowerTech™) Operator’s Manual – PDF DOWNLOAD

Contents 7
Record Keeping 11
Record Engine Serial Number 11
Engine Option Codes 12
Safety 14
Recognize Safety Information 14
Understand Signal Words 14
Follow Safety Instructions 14
Replace Safety Signs 15
Prevent Machine Runaway 15
Handle Fuel Safely—Avoid Fires 15
Prepare for Emergencies 16
Handle Starting Fluid Safely 16
Handle Fluids Safely—Avoid Fires 16
Service Machines Safely 17
Wear Protective Clothing 17
Protect Against Noise 17
Handle Chemical Products Safely 18
Stay Clear of Rotating Drivelines 18
Practice Safe Maintenance 19
Work In Ventilated Area 19
Avoid High-Pressure Fluids 20
Avoid Heating Near Pressurized Fluid Lines 20
Do Not Open High-Pressure Fuel System 20
Remove Paint Before Welding or Heating 21
Service Cooling System Safely 21
Install All Guards 21
Avoid Hot Exhaust 22
Exhaust Filter Cleaning 22
Prevent Battery Explosions 22
Work in Clean Area 23
Illuminate Work Area Safely 23
Handling Batteries Safely 24
Protect Against High Pressure Spray 24
Use Proper Lifting Equipment 25
Use Proper Tools 25
Decommissioning — Proper Recycling and Disposal of Fluids and Components 26
Precautions for Welding 27
California Proposition 65 Warning 27
Fuels, Lubricants, and Coolant 28
Diesel Fuel 28
Diesel Fuel Additive Products 29
Lubricity of Diesel Fuel 29
Handling and Storing Diesel Fuel 29
Testing Diesel Fuel 29
Biodiesel Fuel 30
Minimizing the Effect of Cold Weather on Diesel Engines 32
Diesel Engine Break-In Oil — Non-Emissions Certified and Certified Tier 1, Tier 2, Tier 3, Stage I, Stage II, and Stage III 33
Diesel Engine Oil — Tier 2 and Stage II 34
Engine Oil and Filter Service Intervals — Tier 2 and Stage II — OEM Applications 35
Mixing of Lubricants 35
Oil Filters 35
Oilscan™ and CoolScan™ 36
Alternative and Synthetic Lubricants 36
Lubricant Storage 36
Multipurpose Extreme Pressure (EP) Grease 37
Diesel Engine Coolant (engine with wet sleeve cylinder liners) 38
Drain Intervals for Diesel Engine Coolant 39
Supplemental Coolant Additives 39
Testing Diesel Engine Coolant 40
Operating in Warm Temperature Climates 40
Disposing of Coolant 41
Engine Operating Guidelines 42
Sea Trials for Performance and Warranty 42
John Deere Instrument (Gauge) Panel 43
John Deere Instrument (Gauge) Panel (Continued) 44
Using Diagnostic Gauge to Access Engine Information 45
Main Menu Navigation 45
Engine Configuration Data 47
Accessing Stored Trouble Codes 49
Accessing Active Trouble Codes 51
Engine Shutdown Codes 53
Adjusting Backlighting 54
Adjusting Contrast 56
Selecting Units Of Measurement 58
Setup 1-Up Display 60
Setup 4-Up Display 65
Normal Engine Operation 70
Break-In Service 71
Auxiliary Gear Drive Limitations 73
Generator Set Applications 73
Starting the Engine 74
Restarting Engine Which Has Run Out Of Fuel 75
Cold Weather Operation 76
Warming Engine 76
Avoid Excessive Engine Idling 77
Stopping the Engine 77
Using a Booster Battery or Charger 78
HelmView Display Panel 79
Product Information 79
Display Features 79
Navigation 80
Setting up your display for the first time 82
Product Features 84
Reprogramming the Display 91
Group Numbers 92
Lubrication and Maintenance 93
Required Emission-Related Information 93
Observe Service Intervals 93
Use Correct Fuels, Lubricants, and Coolant 93
Lubrication and Maintenance Service Interval Chart—Propulsion and Prime Power Units 94
Lubrication and Maintenance Service Interval Chart—Standby Generator Sets 95
Lubrication and Maintenance/Daily 96
Daily Prestarting Checks 96
Lubrication&Maintenance/250 Hour/6 Month 99
Servicing Fire Extinguisher 99
Servicing Battery 99
Changing Engine Oil and Replacing Oil Filter 101
Visually Inspecting Coolant Pump 102
Checking Engine Mounts 103
Inspect and Replace Zinc Plugs – Heat Exchanger Engines 103
Lubrication&Maintenance 500 Hour/12 Month 104
Cleaning and Inspecting Crankcase Ventilation Assembly 104
Replace Closed Crankcase Vent Filter (If Equipped) 104
Checking Air Intake System 105
Checking Engine Electrical Ground Connections 105
Checking Belt Tension and Belt Wear 106
Checking Cooling System 106
Checking Effectiveness of Coolant Solution 107
Adding Supplemental Coolant Additives (SCAs) 107
Pressure Testing Cooling System 108
Inspecting and Cleaning Heat Exchanger Core (Heat Exchanger Engines) 109
Lubrication&Maintenance/2000 Hour/24 Month 110
Checking and Adjusting Engine Speeds 110
Checking and Adjusting Engine Valve Clearance and Electronic Unit Injector Preload 110
Checking Crankshaft Vibration Damper 110
Flushing and Refilling Cooling System 111
Replacing Sea Water Pump Impeller With Pump Installed On Engine (Heat Exchanger Engines) 113
Removing and Installing Sea Water Pump 115
Disassemble, Inspect And Repair Sea Water Pump 116
Assemble Sea Water Pump 117
Service as Required 119
Additional Service Information 119
Replacing Fuel Filter/Cleaning Water Separator 119
Adding Coolant 121
Removing and Installing Thermostats 122
Inspecting Thermostats and Testing Opening Temperature 124
Servicing Air Cleaner Filter Element 125
Replacing Air Cleaner Filter Element 126
Replacing Poly V-Belt 127
Draining Fuel Filter Water Separator Bowl 128
Bleeding Fuel System 128
Checking Fuse 129
Checking Air Compressor (If Equipped) 129
Troubleshooting 130
General Troubleshooting Information 130
Sea Water Flow—Heat Exchanger Engines 132
Precautions for Welding 133
Precautions For Welding On Vessels Equipped With Electronic Engine Control Unit (ECU) 133
Transition Harness Wiring Diagram 134
Engine Wiring Diagram for John Deere Main (Wheel House) Instrument Panel 138
Engine Wiring Diagram for John Deere Main Instrument Panel (Continued) 140
Engine Wiring Diagram for John Deere Optional Fly Bridge Instrument Panel 141
Engine Wiring Diagram for John Deere Electronic Control Unit (ECU) – 12V or 24V 142
Engine Wiring Diagram for John Deere Electronic Control Unit (ECU) (Continued) 143
Engine Troubleshooting 144
Engine Troubleshooting (Continued) 146
Engine Troubleshooting (Continued) 148
Lubrication System Troubleshooting 149
Cooling System Troubleshooting 152
Air Intake System Troubleshooting 154
Low Pressure Fuel System Troubleshooting 157
Retrieving Diagnostic Trouble Codes 158
Displaying Of Diagnostic Trouble Codes (DTCs) 158
Listing of Diagnostic Trouble Codes (DTCs) 159
Intermittent Fault Diagnostics 160
Displaying Diagnostic Gauge Software 161
Storage 163
Engine Storage Guidelines 163
Preparing Engine for Long-Term Storage 163
Removing Engine from Long-Term Storage 164
Specifications 165
General Engine Specifications 165
Engine Power Specifications — Propulsion Applications 165
Engine Power Specifications — Generator Set Applications 166
Engine Crankcase Oil Fill Quantities 166
Unified Inch Bolt and Screw Torque Values 167
Metric Bolt and Screw Torque Values 168
Lubrication and Maintenance Records 169
Using Lubrication and Maintenance Records 169
Daily (Prestarting) Service 169
250 Hour/6 Month Service 169
500 Hour/12 Month Service 170
2000 Hour/24 Month Service 170
Service As Required 171
Emission Systems Warranty 172
Emissions Control System Certification Label 172
U S Marine Compression-Ignition Engine Emission Control Warranty Statement 173
European Union (EU) Declaration of Emissions Conformity 174
John Deere Service Literature Available 175
Technical Information 175
Page Number 7
Section 01 11
Section 05 14
Section 10 28
Section 15 42
Section 16 79
Section 20 93
Section 25 96
Section 30 99
Section 35 104
Section 40 110
Section 50 119
Section 55 130
Section 60 163
Section 65 165
Section 70 169
Section 75 172
Section 80 175

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