Part of the John Deere Repair Manuals.
Rebuilding a cutterbar or pulling conditioner rolls goes smoother with 298 pages of John Deere factory instruction behind you: the John Deere 820 technical manual PDF, TM1547, written for the 820 Mower-Conditioner. Near the back, diagrams show how the hydraulic lift cylinders and center link work, and page 267 carries the warning light wiring diagram. Close to a third of the pages go to the conditioner alone, covering roll arms, bearings, and roll service, while the power train section walks the PTO hookup, driveline, and slip clutch from teardown through reassembly. Set drive belt deflection at 8 mm (5/16 in.) under 89 to 125 N (20 to 28 lb) of pull, and torque bolt-on knife section nuts to 11 N·m (8 lb-ft). A guessed torque on a knife section shows up as a broken blade mid-field. Pages are crisp and print-ready, bookmarked for jumps, and once downloaded the file stays yours as long as the 820 does.
What's Inside This John Deere 820, 820 Mower-Conditioner Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-24 | Safety, Specifications (Machine Specifications, Cap Screw Torque Values, Machine Description), Lubrication (Main Drive Gear Case Oil, Cutterbar Drive Gear Case Oil, Grease) |
| Power Train | 25-98 | PTO Hookup, Driveline, Slip Clutch, Main Drive Gear Case |
| Cutting Components | 99-126 | Cutterbar |
| Platform | 127-162 | Platform Components, Reel |
| Conditioner | 163-246 | Roll Arms and Bearings, Rolls |
| Carrier Frame | 247-268 | Carrier Frame Components, Tongue, Wheel Hub and Support |
| Hydraulics | 269-288 | Hydraulic Lift Cylinders, Hydraulic Center Link |
| Tools | 289-294 | Special Tools, Fabricated Tools |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Metric Bolt and Cap Screw Torque (Class 8.8 or 9.8, M6) | 9 N·m (6.5 lb-ft) lubricated, 11 N·m (8.5 lb-ft) dry | p. 19 |
| Metric Bolt and Cap Screw Torque (Class 8.8 or 9.8, M8) | 22 N·m (16 lb-ft) lubricated, 28 N·m (20 lb-ft) dry | p. 19 |
| Conditioner drive belt deflection | 8 mm (5/16 in.) with 89-125 N (20-28 lb) pull | p. 201 |
| Cutterbar drive belt deflection | 8 mm (5/16 in.) with 89-125 N (20-28 lb) pull | p. 88 |
| Bolt-on knife section nut torque | 11 N·m (8 lb-ft) | p. 109 |
| Knife Guard Vertical Alignment | ± 3 mm (0.1 in.) | p. 102 |
| Guard bolt torque | 61-68 N·m (45-50 lb-ft) | p. 110 |
| Reel Drive Chain Deflection | 8-12 mm (5/16-1/2 in.) | p. 166 |
