John Deere 4620 Tractor Repair Technical Manual

Table of Content (Technical Manual – TM1030)

SECTION 10 – GENERAL
Group 5 – Specifications
Group 10 – Predelivery, Delivery, and After-Sale Services
Group 15 – Tune-Up
Group 20 – Lubrication
Group 25 – Separation
SECTION 20 – ENGINE
Group 5 – General Information, Diagnosis, and Tests
Group 10 – Cylinder Head, Valve Train, and Camshaft
Group 15 – Cylinder Block, Liners, Pistons, and Rods
Group 20 – Crankshaft, Main Bearings, and Flywheel
Group 25 – Lubrication System
Group 30 – Cooling System
SECTION 30 – FUEL SYSTEM
Group 5 – Diagnosing Malfunctions
Group 10 – Air Intake System
Group 15 – Fuel Injection System
Group 20 – Speed Control Linkage
SECTION.40 – ELECTRICAL SYSTEM
Group 5 – Information and Wiring Diagrams
Group 10 – Motorola Charging Circuit
Group 12 – Decatron Charging Circuit
Group 15 – Delco-Flemy Starting Circuit
Group 17 – John Deere Starting Circuit
Group 20 – Lighting and Accessory Circuits
SECTION 50 – POWER TRAIN
Group 5 – Synchro-Range Transmission and PTO Clutches
Group 10 – Synchro-Range Transmission
Group 15 – Engine Disconnect Clutch
Group 20 – Power Shift Transmission
Group 25 – Differential
Group 30 – Final Drive
Group 35 – Synchro-Range PTO
Group 40 – Power Shift PTO
Group 45 – Power Front-Wheel Drive
SECTION 60 – STEERING AND BRAKES
Group 5 – General Information
SECTION 70 – HYDRAULIC SYSTEM
Group 5 – General Information, Diagnosis, and Tests
Group 10 – Main Reservoir, Filters, Valves, Oil Cooler, and Oil Reservoir
Group 15 – Hydraulic Pumps
Group 20 – Power Steering
Group 25 – Power Brakes
Group 30 – Rockshaft and Implement Hitches
Group 35 – Selective Control Valve, Breakaway Couplers, and Remote Cylinders
SECTION 80 – MISCELLANEOUS
Group 5 – Conventional Front Axle
Group 10 – Power Front-Wheel Drive Axle

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.

They are concise guides for specific-machines and  are on-the-job guides-containing only the vital information needed for-diagnosis, analysis, testing, and repair.

Component Technical Manuals are concise service-guides for specific components and are written as stand-alone manuals covering-multiple machine applications.