Part of the John Deere Repair Manuals.
All 298 pages of this John Deere 920/930 Mower-Conditioner Technical Manual (OEM #TM1548) focus on one machine family: the 920 and 930 Mower-Conditioners, from cutterbar to carrier frame. Inside, you get a full power train section covering PTO hookup, driveline, slip clutch, main drive gear case, and cutterbar drive gear case, plus dedicated troubleshooting charts for each system. Wiring diagrams and hydraulic schematics for the lift cylinders and center link round out the back of the manual. When you're at the cutterbar, set gear backlash at 0.25–0.56 mm for the main drive case and torque the gear hub to 306–372 N·m before buttoning it up. Your machine is down and the field isn't waiting. Pull up the bookmark, jump straight to conditioner roll arm removal or hydraulic diagnosing, and get the right number the first time. One download, works on any device, right there on the tractor.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 2 | Foreword, Fos Manuals, Reference, Technical Manuals, Machine Service, Component Manuals, Component Service |
| Dealer Presentation Sheet | 3-6 | |
| General | 7-26 | Safety, Specifications, General Information, Lubrication |
| Power Train | 27-122 | General Information, Diagnosing Malfunctions, PTO Hookup, Driveline, Slip Clutch, Main Drive Gear Case, Cutterbar Drive Gear Case, Miscellaneous Drive Components |
| Cutting Components | 123-186 | General Information, Diagnosing Malfunctions, Cutterbar, Knives |
| Platform | 187-200 | Platform Description, Gauge Shoes, Remove Platform, Install Platform, Adjust Cut Height, Adjust Platform Float |
| Conditioner | 201-252 | General Information, Diagnosing Malfunctions, Roll Bearings and Arms, Rolls, Impeller |
| Carrier Frame | 253-274 | General Information, Diagnosing Malfunctions, Carrier Frame and Components, Tongue, Wheel Hub and Support, Electrical |
| Hydraulics | 275-294 | General Information, Diagnosing Malfunctions, Hydraulic Lift Cylinders, Hydraulic Center Link |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cutterbar Drive Belt Spring Length (hook-to-hook) | 275—285 mm (10-27/32—11-7/32 in.) | p. 122 |
| Quill Mounting Cap Screws Torque | 102 N·m (75 lb-ft) | p. 126 |
| Cutterbar Gear Hub Torque | 306—372 N·m (225—275 lb-ft) | p. 126 |
| Main Drive Gear Case Gears Backlash | 0.25—0.56 mm (0.010—0.022 in.) | p. 30 |
| Cutterbar Drive Gear Case Gears Backlash | 0.25—0.50 mm (0.01—0.02 in.) | p. 30 |
| Knife Bolt Torque | 150 N·m (110 lb-ft) | p. 126 |
| Knife Pivot Hole Excessive Wear (Replacement Value) | 2 mm (3/32 in.) over initial hole diameter | p. 184 |
| 920 Mower-Conditioners | ||
| Slip Clutch Spring Length (540 RPM) | 41 mm (1-5/8 in.) | p. 30 |
| Hydraulic Pressure to Lift Platform | 13,790 kPa (2,000 psi) | p. 17 |
| Cutterbar Oil Reservoir Capacity | 9.5 L (10 U.S. qt.) | p. 17 |
| 920 and 930 Mower-Conditioners | ||
| Slip Clutch Spring Length (1000 RPM) | 38 mm (1-1/2 in.) | p. 30 |
| 930 Mower-Conditioners (S.N. —986000) | ||
| Hydraulic Pressure to Lift Platform (S.N. —986000) | 14,479 kPa (2,100 psi) | p. 19 |
