John Deere 6.8L Compressed Natural Gas Engine Operator’s Manual PDF

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John Deere 6.8L Compressed Natural Gas Engine (PowerTech™) Operator’s Manual – PDF DOWNLOAD

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John Deere 6.8L Compressed Natural Gas Engine (PowerTech™) Operator’s Manual – PDF DOWNLOAD

P/N: OMRG27896_71
Language: English
Division: Construction
Product Lines: Engines
Publication Type: Operator’s Manuals
Associated Models: 6.8L, 6068
Series: POWERTECH
Serial: COMPRESSED NATURAL GAS ENGINE

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

John Deere 6.8L Compressed Natural Gas Engine (PowerTech™) Operator’s Manual – PDF DOWNLOAD

Contents 7
Identification Numbers 9
Record Engine Serial Number 9
Engine Option Codes 11
Safety 13
Recognize Safety Information 13
Understand Signal Words 13
Follow Safety Instructions 13
Prevent Vehicle Runaway 14
Prepare for Emergencies 14
Handle Compressed Natural Gas Safely 15
Protect Against Noise 15
Avoid Heating Near Pressurized Fluid Lines 16
Wear Protective Clothing 16
Work In Ventilated Area 16
Handle Chemical Products Safely 17
Practice Safe Maintenance 17
Avoid High-Pressure Fluids 18
Service Cooling System Safely 18
Stay Clear of Rotating Drivelines 18
Remove Paint Before Welding or Heating 19
Avoid Harmful Asbestos Dust 19
Decommissioning — Proper Recycling and Disposal of Fluids and Components 20
Fuels, Lubricants, and Coolant 21
Natural Gas Recommendations 21
Engine Break-In Oil 21
Natural Gas Engine Oil 21
Oilscan™ and CoolScan™ 22
Cold Weather Operation 22
Alternative and Synthetic Lubricants 23
Mixing of Lubricants 23
Lubricant Storage 23
Grease 23
Recommended Engine Coolant 24
Engine Coolant Specifications 25
Testing Engine Coolant 26
Replenishing Supplemental Coolant Additives (SCA) Between Coolant Changes 27
Operating in Warm Temperature Climates 27
Disposing of Coolant 28
Operating the Engine 29
Engine Break-In 29
Starting the Engine 30
Warming the Engine 31
Changing Engine Speed 32
Idling the Engine 32
Stopping the Engine 32
Using a Booster Battery or Charger 32
Lubrication and Maintenance 33
Required Emission-Related Information 33
Observe Service Intervals 33
Use Correct Fuels, Lubricants, and Coolant 33
Lubrication and Maintenance Service Interval Chart 34
Lubrication and Maintenance—Daily 35
Lubrication and Maintenance—Daily 35
Maintenance—12 Months/12,500 Miles 37
Servicing Battery 37
Changing Engine Oil and Filter 38
Checking Belt Tensioner 40
Checking Air Intake System 41
Checking Cooling System 41
Checking Effectiveness of Coolant Solution 41
Adding Supplemental Coolant Additives (SCA) 42
Maintenance—24 Months/25,000 Miles 43
Cleaning PCV Orifice 43
Checking Crankshaft Vibration Damper 43
Inspecting Natural Gas Lines 44
Pressure Testing Cooling System 44
Flushing Cooling System 45
Replacing Spark Plugs 47
Removal of Seized Spark Plugs (Tool JDG1193 Not Available or Spark Plug Ceramic Stem Has Broken Off) 49
Inspecting Air Compressor 50
Checking and Adjusting Engine Valve Clearance 50
Service as Required 52
Additional Service Information 52
Replacing Belts 52
Replacing Air Cleaner Elements 53
Adding Coolant 53
Troubleshooting 54
Diagnostic Overview 54
Reading Diagnostic Fault Codes 54
Diagnostic Codes 56
Storage 57
Storing the Engine 57
Removing Engine From Storage 58
Specifications 59
General 59
Lubrication System 59
Cooling System 59
Lubrication and Maintenance Records 60
Using Lubrication and Maintenance Records 60
Daily (Prestarting) Service 60
12 Months/12,500 Miles Service 60
24 Months/25,000 Miles Service 60
Service as Required 61
Emissions System Warranty 62
Emission System Label 62
U S Emissions Control Warranty Statement (United States Only) 62
California Emission Control Warranty Statement (California Only) 63
John Deere Service Literature Available 65
Technical Information 65
Other Publications for This Engine 66
John Deere Service Keeps You on the Job 71
NO TITLE 71
Page Number 7
Section 01 9
Section 05 13
Section 10 21
Section 15 29
Section 20 33
Section 25 35
Section 30 37
Section 35 43
Section 50 52
Section 55 54
Section 60 57
Section 65 59
Section 70 60
Section 75 62
Section 80 65

S.V 04/24