Part of the John Deere Repair Manuals.
This 272-page John Deere 1520 Technical Manual (OEM #TM-1012) walks you through every system on the tractor, from the closed-center hydraulic circuit to the Hi-Lo shift power train. You get full wiring diagrams for the charging, starting, and ignition circuits, hydraulic schematics covering the rockshaft and steering systems, and a dedicated troubleshooting section for diagnosing malfunctions before you start pulling parts. Torque tables and clearance specs run throughout, so you're working from real numbers, not shop-manual guesswork. Piston to liner clearance runs 0.0010 to 0.0034 in. on gasoline engines and 0.0084 to 0.0108 in. on diesel; float clearance on the carburetor sits at 1/4 in. from the gasket surface. Stop tearing into the front axle or clutch blind. This PDF is bookmarked and searchable, so you can jump straight from the table of contents to the exact page your 1520 needs.
What's Inside This John Deere 1520 Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Manual | 1-4 | |
| General | 5-24 | Specifications, Predelivery, Delivery, And After-Sale Services, Tune-Up, Lubrication, Separation |
| Engine | 25-70 | General Information and Diagnosis, Cylinder Head, Valves and Camshaft, Cylinder Block, Liners, Pistons, And Rods, Crankshaft |
| Fuel Systems | 71-86 | Diagnosing Malfunctions, Diesel Fuel System, Gasoline Fuel System |
| Electrical System | 87-122 | Information and Diagrams, Charging Circuit, Starting Circuit, Ignition Circuit, Lighting and Accessory Circuits |
| Power Train | 123-190 | Clutches, Hi-Lo Shift Unit, Reverser, Collar Shift Transmission, Differential, Final Drive, Continuous Running and Transmission-Driven PTO, Independent PTO |
| Steering and Brakes | 191-192 | General Information |
| Hydraulic System | 193-268 | General Information, Diagnosis, And Tests, Miscellaneous Hydraulic Components, Hydraulic Pumps, Steering Systems, Hydraulic Brakes, Rockshaft System |
| Miscellaneous | 269-272 | Front Axle (Removal, Repair, Installation, Specifications, Torques for Hardware, Special Tools) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic System Type | Closed center, constant pressure | p. 6 |
| Clutch | Single or dual stage, spring-loaded, dry | p. 5 |
| Clutch Disk Thickness (with facing) | 0.0593 to 0.0643 in. | p. 188 |
| Crankcase Oil Capacity (with filter) | 6 qts. | p. 5 |
| Fuel Tank Capacity | 19-1/2 gals. | p. 5 |
| Gasoline | ||
| Piston to Liner Clearance (top) - Gasoline | 0.0010 to 0.0034 in. | p. 46 |
| Carburetor Float Setting (gasket to float edge) | 1/4 in. | p. 86 |
| Maximum PTO Horsepower (Gasoline) | 47.86 hp | p. 5 |
| Diesel | ||
| Piston to Liner Clearance (top) - Diesel | 0.0084 to 0.0108 in. | p. 46 |
