Part of the John Deere Repair Manuals.
A Hydra-Push spreader that quits pushing mid-load comes down to a cylinder, a valve, or a worn beater drive, and this John Deere 450, 780 technical manual PDF exists to tell you which. Deere published it as TM1318, 266 pages of factory service coverage for both spreader models, from beater drive to sliding floor. Hydraulics take up close to half the book: testing procedures, schematics for the closed-center and open-center control valves, and full teardown coverage of the primary, secondary, and endgate cylinders. Set input shaft preload between 0.6 and 1.7 N·m (5 to 15 lb-in.), and locate the 450's beater hub mark at 1603 mm (63.1 in.) before you call the rebuild done. Guess wrong and you buy the teardown twice. Print what the job calls for, let those pages take the grease, and keep the bookmarked, text-searchable file ready for when the pit is full and the field is waiting.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 5-24 | Introduction and Safety, General Specifications, Lubricants |
| Beater Drive | 25-122 | Operational Checks, Driveline Repair, Clutch Repair, Input Shaft Repair, Drive Sprockets and Chain Repair, Beater Side Shaft Repair, Gear Case Repair, Main Beater Repair |
| Hydraulics | 123-222 | Testing, Secondary Cylinder Repair, Primary Cylinder Repair, Endgate Cylinder Repair, Closed-Center Hydraulic Control Valve Repair, Open-Center Hydraulic Control Valve Repair |
| Miscellaneous | 223-266 | Wooden Guides and Wiper Seals Repair, Wheels and Axle Repair, Moving Panel Repair, Sliding Floor Repair, Endgate Repair, Frp Panel Repair |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Bolt Torque SAE 2 (1/4 in.) | 8 N·m (6 lb-ft) | p. 17 |
| Bolt Torque SAE 2 (5/16 in.) | 19 N·m (14 lb-ft) | p. 17 |
| Input Shaft Preload Torque | 0.6-1.7 N·m (5-15 lb-in.) | p. 89 |
| Output Shaft Preload Torque | 1.1-2.3 N·m (10-20 lb-in.) | p. 89 |
| 450 Spreader primary cylinder M12 x 30 capscrew torque | 100 N·m (75 lb-ft) | p. 190 |
| 450 | ||
| Beater hub mark dimension | 1603 mm (63.1 in.) | p. 107 |
| Splined hub assembly dimension | 15 mm (0.60-in.) | p. 108 |
| Net draw from tractor hydraulic reservoir (with endgate) | 6.25 L (1.65 U.S. gal) | p. 89 |
| Net draw from tractor hydraulic reservoir (without endgate) | 5.51 L (1.46 U.S. gal) | p. 126 |
| 450 Spreader adjustable flow | 0-17 L/min (4.5 gpm US) | p. 143 |
| 780 | ||
| 780 Spreader adjustable flow | 0-26 L/min (6.8 gpm US) | p. 143 |
| 450 Spreader | ||
| Self-tapping screws torque | 12-20 N·m (9-15 lb-ft) | p. 170 |
