John Deere 70, 720, 730 (70 Series) Tractors Technical Manual

Table of Contents(Repair Service Manual – SM2017, SM2020, SM2025)

• Description and Specifications
• Preparing the Tractor for Delivery to the Customer
• Tractor Tune-Up and Adjustments
• Engine
• Governor and Fanshaft Assembly
• Ignition and Electrical Systems
• Cooling System
• Engine Lubrication System
• Fuel System
• Pulley, Clutch, and Pulley Brake
• Transmission and Transmission-Driven Power Shaft
• Engine-Driven Power Shaft
• Differential and Final Drive
• Brakes
• Wheels and Tires
• Steering Mechanism and Front Axle
• Powr-Trol

This Unit of the Service Manual contains maintenance instructions for the Model ”70 Series” Tractor.
Included are complete instructions for removal, disassembly, inspection, repair, assembly, and installation of all parts and assemblies.

In addition, the manual contains a brief description of the more complicated systems of the tractor and tells how they operate. Dimensions of many new wearing parts are given as an aid in determining when parts replacement is necessary. Tests and adjustments required to keep the tractor operating at full efficiency are explained in detail. Full instructions on preparing a new tractor for delivery to the customer are included.

Complete instructions for testing, repairing, and adjusting the carburetor, generator, starter, and distributor are given in the “Tractors and Engines (General)” Unit of the Service Manual. For additional information concerning Power-Trol mechanism,
consult “Hydraulic Equipment, Tractors (Waterloo)” Unit of the Service Manual.

Use the manual whenever in doubt about correct maintenance procedures. Use it as a text book for new Service Department personnel who are unfamiliar with John Deere Tractors.
Daily use of the Service Manual as a guide for any and all service problems will reduce error and costly delay to the minimum and assure you the best in finished service work.