Illustrated Factory Technical Service Manual for John Deere 2WD or MFWD Tractors Models 4620 This manual contains high quality images, circuit diagrams, instructions to help you to maintenance, troubleshooting, diagnostic, and repair your truck.This document is printable, without restrictions, contains searchable text.Language: English Format: PDF, 316 pages; Covered models: 4620 Contents: 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 - Delcotron 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 - Syncro-Range Transmission and PTO Clutches Group 10 - Syncro-Range Transmission Group 15 - Engine Disconnect Clutch Group 20 - Power Shift Transmission Group 25 - Differential Group 30 - Final Drive Group 35 - Syncro-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