John Deere 7520 Tractor Service Repair Manual
（TM1053）
Service Technical Manual Covers:
SECTION 10 – GENERAL
5 – General Tractor Specifications
10 – Predelivery, Delivery, and After-Sale Services
15 – Tune-Up
20 – Lubrication
25 – Separation
30 – Torques and Special Tools
SECTION 20 – ENGINE
5 – General Information, Diagnosis, and Tests
10 – Cylinder Head, Valve Train, and Cam-Shaft
15 – Cylinder Block, Liners, Pistons, and Rods
20 – Crankshaft, Main Bearings, and Flywheel
25 – Lubrication System
30 – Cooling System
35 – Specification
SECTION 30 – FUEL SYSTEM
5 – Diagnosing Malfunctions
10 – Air Intake System
15 – Fuel Injection System
20 – Speed Control Adjustment
25 – Specifications
SECTION 40 – ELECTRICAL SYSTEM
5 – Information and Wiring Diagrams
10 – Motorola Charging Circuit
15 – Delcotron Charging Circuit
20 – Starting Circuit
25 – Lighting and Accessory Circuits
30 – Specifications
SECTION 50 – POWER TRAIN
5 – Clutch
10 – Torque Divider
15 – Syncro-Range Transmission
20 – Differentials
25 – Final Drives
30 – PTO
35 – Specifications
SECTION 60 – STEERING AND BRAKES
5 – General Information
SECTION 70 – HYDRAULIC SYSTEM
5 – General Information, Diagnosis, and Tests
10 – Main Reservior, Filters, Valves, Oil Cooler, and Oil Reservior
15 – Hydraulic Pumps
20 – Power Steering
25 – Power Brakes
30 – Selective Control Valve, Breakaway Couplers, and Remote Cylinders
35 – Specifications
SECTION 80 – MISCELLANEOUS
5 – Hinge Assembly
And More……