Part of the New Holland Repair Manuals.
Hydrostatic drive, main gearbox, conditioner rolls, sickle drive, and reel: the New Holland 499 service manual PDF (OEM 40049910) takes each system on the Pivot Tongue Haybine Mower-Conditioner from removal through reassembly across 48 pages. Hydraulic schematics map the pump, relief valve, motor, and tongue reservoir circuit, so you can trace where pressure is going before you pull a single line. Cylinder rebuilds get the same treatment: swing, master, and slave, each stripped and reassembled with inspection checks that tell you whether seals or bores are at fault. Set the relief valve at 3500 psi, fill the reservoir with 20 gallons (75.7 L) of oil, and torque the gearbox attaching bolts to 70 to 80 ft. lbs. Nobody around still works on these. It's you, the machine, and this bookmarked, text-searchable PDF; print the pages that matter and let them take grease on the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and General Information | 2-3 | Scope of the Manual and Its Relationship to the Operator's Manual, How the Hydrostatic Troubleshooting Section Is Organised, The Safety-Symbol Convention, Directional Orientation, Bolt Installation, Lock Washer and Flat Washer Practice |
| Hydrostatic System | 4-5 | Pump and Gearbox Assembly, Relief Valve, Hydrostatic Motor, Oil Filter, Tongue Reservoir, Hydrostatic Oil |
| Hydrostatic Pump and Gearbox | 6-13 | Pump Disassembly, Pump Assembly |
| Hydrostatic Motor | 14-18 | Motor Disassembly, Motor Assembly |
| Hydraulic Cylinder | 19-25 | Swing Cylinder Disassembly, Master Cylinder Disassembly, Slave Cylinder Disassembly |
| Main Gearbox | 26-28 | Gearbox Removal, Gearbox Disassembly, Gear Inspection, Bearing Assembly, Gearbox Installation |
| Conditioner Rolls | 29-31 | Lower Roll Removal, Upper Roll Removal, Roll Assembly |
| Sickle Drive Gearbox | 32-36 | Right Side Removal, Gearbox Disassembly, Gearbox Assembly |
| Connecting Rod | 37-39 | Crank Pin Bearings, Rocker Arm Bearings, Bearing Assemblies, Slotted Nut, Cotter Pin, Grease Zerk |
| Reel | 40-44 | Tine Bar Bearings, Reel U-Joints, Reel Cams and Bushings |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Relief valve pressure setting | 3500 psi (24,133 kPa) | p. 4 |
| Hydrostatic reservoir capacity | 20 gallons (75.7 L) | p. 6 |
| Back plate bolts torque | 15-18 ft. lbs. (20-24 N·m) | p. 18 |
| Gearbox attaching bolt torque | 70 to 80 ft. lbs. (95 to 108 N·m) | p. 28 |
| Connecting rod bearing preload (running torque) | 2-6 in. lbs. (0.35-1.05 N·m) | p. 35 |
| Gearbox bearing running torque | 2-6 in. lbs. (0.35-1.05 N·m) | p. 35 |
| Pump case drain flow limit | 2 gallons per minute | p. 5 |
| Motor case return flow limit | 2 gallons per minute | p. 5 |
| Reservoir oil capacity | 20 gallons | p. 6 |
| Back plate cap screw torque | 15-18 ft. lbs. | p. 12 |
| Adapter plate cap screw torque | 55-60 ft. lbs. | p. 14 |
| Cylinder rod nut torque | 250 ft. lbs. | p. 22 |
