John Deere 2520 Row Crop and Hi-Crop Tractors Technical Manual

Table of Contents(Repair Service Manual – TM1004)

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 and Camshaft Group
15 – Cylinder Block, Liners, Pistons, and Rods Group
20 – Crankshaft, Main Bearings, and Flywheel Group
25 – Timing Gear Train
Group 30 – Lubrication System
Group 35 – Cooling System
Group 40 – Governor and Speed Control Linkage
SECTION 30 – FUEL SYSTEMS
Group 5 – Diagnosing Malfunctions
Group 10 – Diesel Fuel System
Group 15 – Gasoline Fuel System
SECTION 40 – ELECTRICAL SYSTEM
Group 5 – Information and Wiring Diagrams
Group 10 – Charging Circuit
Group 15 – Starting Circuit
Group 20 – Ignition System
Group 25 – 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 – Hi-Crop Final Drive
Group 40 – Syncro-Range PTO
Group 45 – Power Shift PTO
Group 50 – Belt Pulley
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, 3-Point Hitch, and Quik Coupler
Group 35 – Selective Control Valve, Breakaway Couplers, and Remote Cylinders
SECTION 80 – MISCELLANEOUS
Group 5 – Front Axle

This Unit of the Service Manual contains maintenance instructions for the Model ”2520″ 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.

Use this 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 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.