Part of the New Holland Repair Manuals.
Driveline, brakes, hydraulics, frame, electrical, and the full feeding and pressing systems: this New Holland BR740A, BR750A repair manual PDF walks each one end to end, 972 pages under factory publication 604.66.241.00, covering both round balers in stuffer and rotor configurations. Wiring diagrams trace the Bale Command Plus harnesses connector by connector, with component tests for the lights and sensors behind them. Product feeding and pressing, from wide pickup and stuffer through belt rolls, sledge assembly, and the net and twine wrappers, fills nearly half the book on its own. Before the wheels go back on, torque the lug nuts to 380 Nm (280 ft. lbs.); when your belts slip, check the drive roll chain tension spring against the 406 mm (16 in.) spec. Every hour the baler sits, the windrow cures past prime. Print the pages the job calls for and let them get greasy; the bookmarked, keyword searchable file stays clean on your computer.
Other edition of this manual
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Safety | 4-15 | Service Methods, Repair Procedures, Troubleshooting, Precautionary Statements, Personal and Machine Safety, Fluid Safety, Safety Decals, Information Decals |
| Torque, Hardware and Reference Data | 16-31 | Torques and Adjustments, Wheel Bolts, Tire Pressure, Hardware Torque, Locknuts and Jam Nuts, Retaining Compounds and Sealants, Standard Torque Data for Hydraulic Tubes and Fittings, Recommended Lubricants, Roller Chain Wear Limits, Conversion Charts |
| Baler Components and Power Flow | 32-36 | Drive Shaft, Gearbox, Pickup, Floor Roll, Sledge/Pivot Arm, Belts, Power Flow with Stuffer, Power Flow with Rotor, Driveline with Wide Pickup |
| Specifications | 37-41 | Overall Dimensions, Weights, Tires, Driveline, Tractor Requirement, Bale Size |
| Implement Driveline | 45-136 | PTO Driveline, Gearbox, Clutches, Drives, Gearbox Output Driveshaft |
| Brakes | 137-194 | Brake Drum, Brake Shoes, Brake Cylinder, Parking Brakes, Hydraulic Brakes |
| Hydraulics | 195-254 | Tailgate Lift System, Belt Tension System, Pickup Lift Cylinder, Rotor Circuit |
| Frame | 255-332 | Tailgate Replacement, High Hitch, Axles and Wheels |
| Electrical Systems | 333-502 | General Information, Harness and Connectors, Components, Bale Command Monitor |
| Product Feeding | 503-654 | Wide Pickup, Narrow Pickup, Stuffer, Rotor, Feeding Drives |
| Pressing | 655-838 | Belt Tension System, Belt Rolls, Sledge Assembly, Bale Chamber, Density Control |
| Wrapping | 839-972 | Net Wrapper, Twine Wrapper, Wrap Drives, Cutting Knife |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| wheel lug bolts torque | 156 Nm (115 ft.-lbs.) | p. 40 |
| wheel lug nuts torque | 380 Nm (280 ft.-lbs.) | p. 40 |
| Belt drive roll drive chain spring length | 406 mm (16 in.) | p. 43 |
| Starter roll drive chain spring length | 188 mm (7-9/16 in.) | p. 41 |
| Piston nut torque | 129 to 142 Nm (95 to 105 ft. lbs.) | p. 216 |
| Bearing nut torque | 81 to 108 Nm (60 to 80 ft. lbs.) | p. 216 |
| Pickup guard self tapping screw torque | 15 to 18 Nm (133 to 159 in.-lbs.) | p. 513 |
| Cam follower bearing locknut torque | 61 Nm (45 ft.-lbs.) | p. 516 |
| Rotor fingers straightness clearance | 15 mm | p. 617 |
| Drive chain deflection | 0 to 16 mm (0 to 5/8 inch) | p. 622 |
| Knife spring length | 289 to 295 mm (11-3/8 to 11-5/8") | p. 847 |
| Brake spring length | 119 to 123 mm (4-11/16 to 4-27/32") | p. 847 |
