Part of the New Holland Repair Manuals.
Hay on the ground and the baler throwing loose bales is not the moment to hunt for answers. The New Holland BR740, BR750 service manual PDF (OEM 604.66.231.00) puts all 963 pages of factory repair data for both round balers in front of you: driveline and gearbox teardowns, brake service, tailgate and pickup lift hydraulics, and the full pressing and wrapping systems from belts to net wrapper. Wiring diagrams map the Bale Command Plus and Auto Wrap circuits down to individual harness connectors, while troubleshooting charts trace feeding and wrapping faults back to their cause. Set duckbill spring length to 384 to 390 mm, pickup flotation to 23 kg, and retire roller chains at 3 percent elongation, straight from the spec tables. When the twine wrapper quits at dusk, there is no one to call. Bookmarked and text-searchable, this PDF drops you on the wrapping section in three taps, not thirty minutes of page flipping.
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 2-43 | Safety, Safety Decals, Torques and Adjustments, Technical Information |
| Implement Driveline | 44-135 | PTO Driveline, Gearbox, Clutches, Drives |
| Brakes | 136-193 | Brake Drum, Brake Shoes and Brake Cylinder, Parking Brakes, Hydraulic Brakes, Emergency Brakes, Pneumatic Brakes |
| Hydraulics | 194-253 | Tailgate Lift System, Belt Tension System, Pickup Lift, Rotor Knives and Reverse Cylinders, Lubrication - Greaselines and Oiler |
| Frame | 254-331 | Tailgate, High Hitch |
| Electrical Systems | 332-499 | Harness and Connectors, Components - Operation, Location, And Testing, Bale Command Plus Electrical System, Auto Wrap Electrical System, Lights |
| Product Feeding | 500-649 | Wide Pickup with Stuffer, Wide Pickup with Rotor |
| Pressing | 650-833 | Take Up Arm, Belts, Starter Roll, Stationary Roll, Belt Rolls, Sledge Assembly |
| Wrapping | 834-941 | Net Wrapper Mechanical System, Twine Wrapper Mechanical System, Auto Wrap System |
| Ejection | 942-945 | Bale Ejector |
| Shielding | 946-963 | Side Doors, Net and Twine Boxes |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Duckbill spring | 384 to 390 mm | p. 14 |
| Knife spring | 289 to 295 mm | p. 14 |
| Maximum allowable wear elongation for roller chains | 3% | p. 23 |
| Maximum allowable wear elongation for fixed center distance drives | 1.5% | p. 24 |
| Pickup flotation setting | 23 kg (50 lbs.) | p. 40 |
| Sledge Protection | 677 - 767 N·m (499 - 566 ft. lb.) | p. 35 |
| Endless Belts Length (BR750) | 10681 mm (420.5 inch) | p. 39 |
| Standard inside bore | 50.0 mm (2.00") | p. 199 |
| Bore wear limit | 0.127 mm (0.005") | p. 199 |
| Net actuator circuit voltage | 12 volts (plus or minus 0.5 volts) | p. 450 |
| Twine actuator circuit voltage | 12 volts (plus or minus 0.5 volts) | p. 452 |
| Floor roll shaft bolt torque | 98 N⋅m (72 ft.-lbs.) | p. 506 |
