John Deere 4010 and 4020 models Tractors Service Manual (P/N SM-2039)

• Covers 1960–1972 John Deere 4010 and 4020 tractors, including Row-Crop, Standard, and Hi-Crop configurations with Syncro-Range or Power Shift transmissions.
• Official John Deere publication SM-2039, revised April 1967 edition.
• Contains 747 pages of technical specifications, operating controls, lubrication charts, and descriptive data for tractor repair.
• Serves as an essential OEM reference for maintaining and calibrating these classic heavy-duty tractors to original factory standards, detailing serial-number specific differences for fuel systems and hydraulic components.

Manual Contents and Shop Utility

Accurate data removes the guesswork from daily workshop tasks. This document offers a structured breakdown of tractor maintenance, ensuring mechanics can efficiently evaluate necessary service. It starts with operational controls and specification tables for all engine and drivetrain variants. You get complete lubrication requirements. Periodic service intervals and specific engine tune-up schedules are mapped out for diesel, gasoline, and LP-Gas models. Working on vintage agricultural machinery involves inherent hazards, especially regarding heavy lifting and pressurized fluids. Always ensure the tractor is properly supported and system pressure is safely relieved before inspecting or disassembling any components.

Subsequent chapters systematically outline the core mechanical layout. You will find comprehensive overviews covering the engine block, cooling system, transmission types, hydraulic networks, and electrical circuits. Each assembly is described through its component parts, operating principles, and technical tolerances. Having this structured overview on hand expedites planning and descriptive repair analysis for complex systems.

Technical Specifications Overview

This service publication includes extensive torque, capacity, and clearance charts straight from the manufacturer. Intake valve clearance for diesel engines is strictly specified at 0.018 in., while gasoline and LP-Gas intake valves are documented at 0.015 in. The coolant system capacity for the 4020 diesel tractor requires 24 U.S. quarts.

The power steering system operates using a common oil supply. It shares fluid with the transmission and hydraulic systems to maintain a constant pressure. Fuel pump pressure for the diesel injection system is governed by precise injection pump timings. These are clearly documented at TDC for the 4020 and 14° BTDC for the 4010. Throughout the reference section, you will find baseline values for piston rings, camshaft journals, and transmission gear backlashes to verify accurate assembly.