Part of the New Holland Repair Manuals.
Factory repair coverage for every system on your disc mower-conditioner fills these 234 pages (OEM #40143110). Wiring schematics and hydraulic diagrams map the full electrical circuit and cylinder routing. Step-by-step procedures walk through drivelines, slip clutch tear-down, three gearbox rebuilds, full cutter bar disassembly, conditioner roll replacement, and all four hydraulic cylinders: master, slave, tilt, and tongue swing. Torque the cutter bar mounting bolts to 250 ft. lbs. (339 N·m) and set conditioner roll gap between 1/64" and 1/8" before every season. Reference figures run from the 13'3" cutting width to the 3000 RPM disc speed, cited where the procedures call for them. When your mower goes down at the worst time of year, pull this up on your tablet, walk to the machine, and start wrenching. Bookmarked by section and keyword-searchable throughout.
What's Inside This New Holland 1431 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-8 | |
| General Information | 9-26 | Serial Number, Toolbox, Shielding, Tractor Requirements, Tractor Drawbar Dimensions, Option 1, Option 2, Bumper Extensions |
| Adjustments | 27-36 | Swathing, Windrowing, Conditioning (Roll Pressure), Unplugging the Conditioner Rolls, Roll Gap, Roll Timing, Conditioner Belt, Cutter Bar Flotation |
| Drivelines | 37-56 | Introduction, Auto-Lok Slide Lock, Auto-Lok Slide Lock - Disassembly, Auto-Lok Slide Lock - Assembly, Drive Shaft Removal and Installation, Standard Driveline Guards - Disassembly, Primary Driveline Guards - Disassembly, Driveline Guards - Inspection |
| Slip Clutch | 57-68 | Introduction, Slip Clutch - Run-In, Slip Clutch - Wear Inspection, Slip Clutch - Removal, Slip Clutch - Disassembly, Slip Clutch - Inspection, Slip Clutch - Reassembly, Overrunning Clutch - Disassembly |
| Gearbox | 69-124 | Introduction, Header Drive Belt Replacement, Right Side Drive Belt, Left Pedestal Shaft - Disassembly, Left Pedestal Shaft - Assembly, Center Pivoting Gearbox - Removal, Center Pivoting Gearbox - Disassembly, Parts Identification |
| Cutter Bar | 125-160 | Type, No. of Discs, Knives per Disc, Disc Cutting Diameter, Disc Drive, Disc Speed, Cutting Height, Cutter Bar Angle |
| Conditioner Rolls and Drive | 161-186 | Introduction, Conditioner Belt Adjustment, Conditioner Belt Replacement, Conditioner Roll Drive Shaft - Removal, Conditioner Roll Drive Shaft - Disassembly |
| Hydraulic Cylinders | 187-204 | Introduction, Hydraulic Diagram, Bleeding Air From the Lift Cylinders, Lift Cylinder Removal, Master Cylinder - Disassembly, Master Cylinder - Inspection, Master Cylinder - Assembly, Slave Cylinder - Disassembly |
| Electrical System | 205-220 | Introduction, Wiring Schematic, Trailer Connector Repair, Grease Fittings, Gearboxes, PTO Slide Collar, Primary PTO, Front 80° Cv Joint |
| Optional Equipment | 221-223 | Safety Chain, Bumper Extensions, Trailing Light Kit, High Stubble Kit |
| Troubleshooting | 224-228 | Crop Conditioning, Knife Performance, Cutter Bar Flotation, Windrow Formation, Material Flow, PTO Speed |
| Specifications | 229-230 | Overall Dimensions, Driveline, Header, Cutter Bar, Conditioner, Performance |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cutter bar tie bolts torque | 50 ft. lbs. | p. 154 |
| Gear set backlash within module | 0.005" to 0.011" | p. 147 |
| Cutter bar mounting bolts torque | 250 ft. lbs. (339 N·m) | p. 157 |
| Center Pivoting Gearbox oil capacity | 68 oz. (2000 ml) | p. 159 |
| Conditioner roll gap | 1/64" to 1/8" | p. 32 |
| Conditioner belt tension spring length | 11" (279 mm) | p. 33 |
| Output shaft end play | 0 - 0.002" (0 - 0.05 mm) | p. 155 |
| Center Pivoting Gearbox oil type | API GL5 80W90 gear oil | p. 159 |
| Overall Width | 13'3" (4000 mm) | p. 229 |
| Weight | 5600 lbs. (2557 kg) | p. 229 |
| Tractor PTO HP Requirement | 90 HP (67 KW) or greater | p. 229 |
| Hydraulic Pressure Capability | 1500 PSI (104 bar) | p. 229 |
