Description

John Deere 4620 Tractor Technical Manual (TM1030)

John Deere 4620 Tractor INDEX:

GENERAL
Specifications
Delivery, and Services
– Tune-Up
Lubrication
Separation
ENGINE
Genera} Information, Diagnosis, and Tests
Cyiinder Head, Valve Train, and Camshaft
Cylinder Block, Liners, Pistons, and Rods
– Crankshaft, Main Bearings, and Flywheel
Lubrication System
Cooling System
FUEL SYSTEM
Diagnosing Malfunctions
Air Intake System
Fuel Injection System
– Speed Control Linkage
ELECTRICAL SYSTEM
– Information and Wiring Diagrams
Motorola Charging Circuit
Delcotron Charging Circuit
Delco-Remy Starting Circuit
John Deere Starting Circuit
Lighting and Accessory Circuits

SECT ON 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
Differentia!
Group30
Final Drive
Group 35 –
Syncro-Range PTO
Group 40
Power Shift PTO
Group 45
– Power Front-Wheel Drive
SECTION 60
STEERI NG AND BRAKES
Group 5
General Information
SECTION 70
HYDRAULIC SYSTEM
Group 5
General Information, Diagnosis, and Tests
Group 10
Main Reservoir t 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