John Deere 820 Tractor Service Technical Manual
（tm1297）
John Deere Power tech 4.5 L & 6.8 L Diesel Engines Service Repair Manual
This manual is written for an experienced technician. Essential tools required in performing certain service work are identified in this manual and are recommended for
use.
This manual covers only Level 12 Electronic Fuel System with the Stanadyne DE10 injection pump. It is one of five volumes on 4.5 L and 6.8 L engines. There are four companion manuals which cover the base engine, mechanical fuel system, level 4 electronic fuel system and level 1 electronic fuel system repair, operation and diagnostics:
Other manuals may be added in the future to provide additional information on electronic fuel systems as needed. Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text of the manual.
Use this component technical manual in conjunction with the machine technical manual. An application
listing in Section 01, 001 identifies product model/component type model relationship.
John Deere 820 Tractor Service Technical Manual
See the machine technical manual for information on component removal and installation, and gaining access to the components.
Section 01—General Information
000—Safety
001—Engine Identification
002—Fuels
Section 02—Repair and Adjustments
090—Electronic Fuel System Repair and
Adjustments
110—Electrical Engine Control Repair and
Adjustment
Section 03—Theory of Operation
130—Electronic Fuel System Operation
140—Electronic Control System Operation
Section 04—Diagnostics
150—Observable Diagnostics and Tests
160—Trouble Code Diagnostics and Tests
Section 05—Tools and Other Materials
170—Electronic Fuel/Control System Repair
Tools and Other Materials
180—Diagnostic Service Tools
Section 06—Specifications
200—Repair Specifications
210—Diagnostic Specifications