John Deere 20A Nursery and Green House Tractor Service Manual
TM103219 – John Deere 20A Nursery and Green House Specialty Tractor Technical Service Manual
Comprehensive Service Manual Table of Contents
Foreword
- 🔹 General Information
- Safety Guidelines
- General Specifications
- Recommended Fuel and Lubricants
- Serial Number Location
- Features and Accessories
Engine Repair
- 🔹 Engine Overview
- 🔹 Cylinder Head and Valves: Maintenance and repair.
- 🔹 Cylinder Block, Liners, Pistons, and Connecting Rods
- 🔹 Crankshaft, Main Bearings, and Flywheel
- 🔹 Camshaft and Timing Gear Train
- 🔹 Lubrication System
Fuel and Air Repair
- 🔹 Fuel System: Diagnostics and repairs.
- 🔹 Air Intake and Exhaust System
- 🔹 Speed Control Linkage
Electrical Repair
- 🔹 Battery, Starter, and Alternator
- 🔹 Electrical System Components
- 🔹 Wiring Harness Maintenance
Power Train Repair
- 🔹 Clutch Housing
- 🔹 Clutch Assembly
- 🔹 Transmission
- 🔹 Central Pivot
- 🔹 Rear PTO Drive Shaft
- 🔹 Differential
- 🔹 Final Drives
Steering and Brake Repair
- 🔹 Steering System Repair
- 🔹 Brake System Repair
Hydraulic Repair
- 🔹 Hydraulic Pump and Filter
- 🔹 Rock shaft
Miscellaneous Repair
- 🔹 Wheels
- 🔹 3-Point Hitch
Operator Station Repair
- 🔹 Seat and Support
- 🔹 ROPS (Roll-Over Protective Structure)
- 🔹 Operator Platform
- 🔹 Fenders
Operational Checkout Procedures
- 🔹 General Operational Checkout
Engine Operation, Tests, and Adjustments
- 🔹 Component Location
- 🔹 Theory of Operation
- 🔹 Diagnostics, Tests, and Adjustments
Fuel and Air System Operation, Tests, and Adjustments
- 🔹 Component Location
- 🔹 Theory of Operation
- 🔹 Diagnostics, Tests, and Adjustments
Electrical System Operation, Tests, and Adjustments
- 🔹 General Electrical System Operation and Tests
- Starting System (SE01)
- Charging System (SE02)
- Instrument Panel (SE03)
- Lighting System (SE04)
- Turn Signal and Hazard Warning Lights (SE05)
- Horn (SE06)
- Rear PTO Warning System (SE07)
- 7-Pin Trailer Connector (SE08)
- 🔹 Component Information
- Connectors
- Wiring Harnesses
- Ground Connections
- 🔹 Wiring Diagrams
Power Train Operation, Tests, and Adjustments
- 🔹 Transmission
- Component Location
- Theory of Operation
- Diagnostics, Tests, and Adjustments
Steering and Brake Operation, Tests, and Adjustments
- 🔹 Component Location
- 🔹 Theory of Operation
- 🔹 Diagnostics, Tests, and Adjustments
Hydraulic System Operation, Tests, and Adjustments
- 🔹 Component Location
- 🔹 Theory of Operation
- 🔹 Diagnostics and Tests
- 🔹 Hydraulic Schematics
