John Deere 6068 Diesel Engine Level 21 ECU Repair Technical Manual (CTM104719)

Table of Content
Section 01—General Information
Group 000—Safety
Group 001—Engine Identification Information
Group 002—Fuels, Lubricants, and Coolants
Section 02—Repair and Adjustments
Group 010—Engine Rebuild
Group 020—Cylinder Head and Valves Repair and
Adjustments
Group 030—Cylinder Block, Liners, Pistons and Rods
Group 040—Crankshaft, Main Bearings and Flywheel
Group 050—Camshaft and Timing Gear Train Repair
and Adjustment
Group 060—Lubrication System Repair and Adjustment
Group 070—Cooling System Repair and Adjustment
Group 080—Air Intake and Exhaust System Repair and
Adjustment
Group 085—Air System Repair and Adjustment —
Single Turbocharger Option
Group 090—Electronic Fuel System Repair and
Adjustment
Group 100—OEM Starting and Charging Systems
Repair and Adjustment
Group 110—Electrical Engine Control Repair and
Adjustment
Group 112—Connector Repair and Adjustment
Group 115—Aftertreatment Devices
Section 03—Theory of Operation
Group 120—Base Engine Operation
Group 123—Cooling System
Group 126—Lubrication System
Group 130—Electronic Fuel System
Group 135—Air Intake and Exhaust System
Group 137—Aftertreatment System
Group 140—Electronic Control System
Section 04—Diagnostics
Group 150—Observable Diagnostics and Tests
Group 155—Checks, Tests and Procedures
Group 160—Diagnostic Instructions and Information
Group 161—DTC SPN – 000001—000199
Group 162—DTC SPN – 000200—000699
Group 163—DTC SPN – 000700—001999
Group 164—DTC SPN – 002000—002299
Group 165—DTC SPN – 002300—002999
Group 166—DTC SPN – 003000—003999
Group 167—DTC SPN – 004000—529999
Section 05—Tools and Other Materials
Group 180—Special Tools
Group 190—Lubricants, Sealants, and Other Materials
Section 06—Specifications
Group 200—Repair and General OEM Specifications
Group 210—Diagnostic Specifications
This repair manual covers the 6068 PowerTech™ Engine Above 130 kW (174 hp) — Interim Tier 4/Stage III B platform.
Section 01 covers the safety measures to follow while repairing the engine; engine identification features, engine emission and application details, and information about the fuels, lubricants, and coolants.
Section 02 covers the repair and adjustment procedures.
Section 03 explains the theory of operation of each system.
Section 04 is the diagnostics section that provides troubleshooting procedures to find problems
Section 05 covers other materials needed to do the job.
Section 06 details all specifications, wear tolerances, torque values, and contains the wiring diagrams.