John Deere 20A Nusery and Green House Tractors Repair Manual (TM103219)

Table of Contents
Section 10—General Information
Group 05—Safety
Group 10—General Specifications
Group 15—Fuel and Lubricants
Group 20—Serial Number Location
Group 25—Features and Accessories
Section 20—Engine Repair
Group 05—Engine
Group 10—Cylinder Head and Valves
Group 15—Cyl. Block, Liners, Pistons and Rods
Group 20—Crankshaft, Main Bearings and Flywheel
Group 25—Camshaft and Timing Gear Train
Group 30—Lubrication System
Section 30—Fuel and Air Repair
Group 05—Fuel System
Group 10—Air Intake and Exhaust System
Group 15—Speed Control Linkage
Section 40—Electrical Repair
Group 05—Battery, Starter and Alternator
Group 10—Electrical System Components
Group 15—Wiring Harness
Section 50—Power Train Repair
Group 05—Clutch Housing
Group 10—Clutch Assembly
Group 15—Transmission
Group 20—Central Pivot
Group 25—Rear PTO Drive Shaft
Group 30—Differential
Group 35—Final Drives
Section 60—Steering and Brake Repair
Group 05—Steering Repair
Group 10—Brake Repair
Section 70—Hydraulic Repair
Group 05—Hydraulic Pump and Filter
Group 10—Rockshaft
Section 80—Miscellaneous Repair
Group 10—Wheels
Group 15—3 Point Hitch
Section 90—Operator Station Repair
Group 05—Seat and Support
Group 10—ROPS
Group 15—Operator Platform
Group 20—Fenders
Section 210—Operational Checkout Procedures
Group 10—Operational Checkout Procedures
Section 220—Engine Operation, Tests and Adjustments
Group 05—Component Location
Group 10—Theory of Operation
Group 15—Diagnosis, Tests and Adjustments
Section 230—Fuel/Air Operation, Test and Adjustments
Group 05—Component Location
Group 10—Theory of Operation
Group 15—Diagnosis, Tests and Adjustments
Section 240—Electrical System Operation, Tests and Adjust
Group 00—Operation and Tests—General
Group S01—SE01—Starting System
Group S02—SE02—Charging System
Group S03—SE03—Instrument Panel
Group S04—SE04—Lighting System
Group S05—SE05—Turn Signal and Hazard Warning Lights
Group S06—SE06—Horn
Group S07—SE07—Rear PTO Warning System
Group S08—SE08—7Pin Trailer Connector
Group 105—Component Information—Connectors
Group 110—Component Information—Wiring Harnesses
Group 115—Component Location—Electrical Parts
Group 120—Component Information—Ground Connections
Group 200—Wiring Diagrams
Section 250—Power Train Operation, Tests and Adjustments
Group 05—Component Location—Transmission
Group 10—Theory of Operation—Transmission
Group 15—Diagnosis, Tests, and Adjustments Transmission
Section 260—Steering and Brake Operation, Test & Adjustments
Group 05—Component Location
Group 10—Theory of Operation
Group 15—Diagnosis, Tests and Adjustments
Section 270—Hydraulic System Operation, Test and Adjustments
Group 05—Component Location
Group 10—Theory of Operation
Group 15—Diagnosis
Group 20—Hydraulic Tests
Group 45—Hydraulic Schematics
Technical manuals are divided in two parts: repair and diagnostics. Repair sections tell how to repair the components. Diagnostic sections help you identify the majority of routine failures quickly.
This manual was planned and written for the Service Department; its place is in the shop. Use the manual whenever in doubt about correct maintenance procedures. Use it as a text book for training new Service Department personnel who are unfamiliar with John Deere Tractors.