6.8 L OEM Diesel Engines (PowerTech™)
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All information, illustrations and specifications in this manual are based on the latest information available at the time of publication. The right is reserved to make changes at any time without notice.
OEM Engine and Drivetrain Warranty Registration
Foreword
Engine Owner
Download Instructions
Identification Views
Trademarks
Section 01 - Record Keeping
Engine Serial Number Plate
Record Engine Serial and Model Number
Engine Option Codes
Emission Control Information Label
Record High-Pressure Fuel Pump Model Number
Record Engine Control Unit (ECU) Serial Number
Section 05 - Safety
Recognize Safety Information
Understand Signal Words
Follow Safety Instructions
Replace Safety Signs
Illuminate Work Area Safely
Work in Clean Area
Use Proper Tools
Live With Safety
Prevent Machine Runaway
Handle Fuel Safely—Avoid Fires
Prepare for Emergencies
Handle Starting Fluid Safely
In Case of Fire
Handle Fluids Safely—Avoid Fires
Avoid Static Electricity Risk When Refueling
Service Machines Safely
Wear Protective Clothing
Protect Against Noise
Handling Batteries Safely
Prevent Acid Burns
Stay Clear of Rotating Drivelines
Install All Guards
Practice Safe Maintenance
Remove Paint Before Welding or Heating
Avoid Heating Near Pressurized Fluid Lines
Avoid High-Pressure Fluids
Do Not Open High-Pressure Fuel System
Protect Against High Pressure Spray
Prevent Battery Explosions
Avoid Hot Exhaust
Work In Ventilated Area
Service Cooling System Safely
Decommissioning — Proper Recycling and Disposal of Fluids
and Components
Section 10 - Fuels, Lubricants, and Coolants
Diesel Fuel
Supplemental Diesel Fuel Additives
Lubricity of Diesel Fuel
Handling and Storing Diesel Fuel
Biodiesel Fuel
Testing Diesel Fuel
Fuel Filters
Minimizing the Effect of Cold Weather on Diesel Engines
Diesel Engine Break-In Oil — Non-Emissions Certified and
Certified Tier 1, Tier 2, Tier 3, Stage I, Stage II, and Stage III
Diesel Engine Oil — Tier 2 and Stage II
Engine Oil and Filter Service Intervals — Tier 2 and Stage
II — OEM Applications
Mixing of Lubricants
Alternative and Synthetic Lubricants
Lubricant Storage
Oil Filters
Diesel Engine Coolant (engine with wet sleeve cylinder liners)
Water Quality for Mixing with Coolant Concentrate
Operating in Warm Temperature Climates
Testing Coolant Freeze Point
Disposing of Coolant
Section 15 - Instrument Panels
PV101 Instrument Panels
PV101 Diagnostic Gauge — Using
PV101 Diagnostic Gauge — Main Menu
PV101 Diagnostic Gauge — Essential Menus
DG14 Diagnostic Gauge — Using
DG14 Diagnostic Gauge — Main Menu
DG14 Diagnostic Gauge — Essential Menus
PV480 Instrument Panel
PV480 Diagnostic Gauge — Using
PV480 Diagnostic Gauge — Main Menu
PV480 Diagnostic Gauge — Essential Menus
Main Menu Navigation
Engine Configuration Data
Accessing Stored Trouble Codes
Accessing Active Trouble Codes
Engine Shutdown Codes
Adjusting Backlighting
Adjusting Contrast
Selecting Units Of Measurement
Setup 1-Up Display
Setup 4-Up Display
John Deere PowerSight
Section 20 - Engine Operation
Engine Break-In Service
Starting the Engine
Restarting Engine After Emergency Shutdown
Normal Engine Operation
Warming Engine
Idling Engine
Changing Engine Speed
Cold Weather Operation
Avoid Excessive Engine Idling
Stopping the Engine
Auxiliary Gear Drive Limitations
Generator Set (Standby) Applications
Using a Booster Battery or Charger
Section 30 - Lubrication and Maintenance
Required Emission-Related Information
Observe Service Intervals
Use Correct Fuels, Lubricants, and Coolant
Lubrication and Maintenance Service Interval Chart
Section 35 - Lubrication & Maintenance — Daily
Daily Prestarting Checks
Section 40 - Lubrication & Maintenance — 500 Hours/12 Months
Servicing Fire Extinguisher
Checking Engine Mounts
Servicing Battery
Changing Engine Oil and Replacing Filter
Checking Air Intake System
Replacing Fuel Filter Elements
Checking Belt Tensioner Spring Tension and Belt Wear (Automatic
Tensioner)
Checking Engine Electrical Ground Connections
Checking Cooling System
Pressure Testing Cooling System
Checking and Adjusting Engine Speeds
Section 45 - Lubrication & Maintenance — 2000 Hours/24 Months
Checking Crankshaft Vibration Damper
Section 50 - Lubrication & Maintenance — 3000 Hours/36 Months
Checking and Adjusting Valve Clearance
Testing Glow Plugs for Continuity (If Applicable)
Section 55 - Lubrication & Maintenance — 6000 Hours/72 Months
Flushing and Refilling Cooling System
Testing Thermostat Opening Temperature
Section 60 - Service As Required
Additional Service Information
Do Not Modify Fuel System
Adding Coolant
Pre-Start Cleaning Guide
Replacing Single Stage Air Cleaner
Replacing Axial Seal Air Cleaner Filter Element
Replacing Radial Seal Air Cleaner Filter Element
Replacing Fan and Alternator Belts
Checking Fuses
Checking Air Compressors (If Equipped)
Section 65 - Troubleshooting
General Troubleshooting Information
Instrument Panel Method for Retrieving Diagnostic Trouble Codes
Displaying Of Diagnostic Trouble Codes (DTCs)
Listing of Diagnostic Trouble Codes (DTCs)
Intermittent Fault Diagnostics (With Electronic Controls)
Displaying Diagnostic Gauge Software
Engine Troubleshooting
Precautions for Electrical System When Steam Cleaning Engine
Engine Wiring Layout and Sensor Location
Precautions For Welding
Engine Wiring Diagrams
Control Panel Wiring Diagram
Section 70 - Storage
Engine Storage Guidelines
Preparing Engine for Long-Term Storage
Removing Engine from Long Term Storage
Section 75 - Specifications
General OEM Engine Specifications
Engine Power Ratings And Fuel System Specifications
Engine Crankcase Oil Fill Quantities
Unified Inch Bolt and Screw Torque Values
Metric Bolt and Screw Torque Values
Section 80 - Lubrication and Maintenance Records
Using Lubrication and Maintenance Records
Daily (Prestarting) Service
500 Hour/12 Month Service
1500 Hour/24 Month Service
3000 Hour/36 Month Service
6000 Hour/72 Month Service
Service as Required
Section 85 - Warranty
John Deere Warranty in OEM Applications
Emissions Control System Certification Label
EPA Non-road Emissions Control Warranty Statement—Compression
Ignition
CARB Non-road Emissions Control Warranty Statement—Compression
Ignition
Section 90 - John Deere Service Literature Available
Technical Information