Part of the New Holland Repair Manuals.
A draper belt that crawls in heavy canola and a knife that chatters at the ends usually trace back to two numbers nobody keeps in their head: the relief valve setting and the hold-down clip clearance. Both are here, with the drawings that show where to put the gauge.
Publication 84157369 covers the New Holland 18HB, 21HB, 25HB, 30HB and 36HB draper headers across 152 PDF pages. Hydraulics runs the draper drive, knife drive, reel drive and reel lift, with schematics and pressure tests. Attachments handles cutting systems, guards, draper decks and drive rollers. Electrical covers lights, remote speed control and the sickle drive speed sensor, and the Decals section lists decal part numbers.
Guessing has a price: the wrong knifehead kit, a second teardown of the cutterbar, a motor ruined for want of a torque figure. Look it up, get the torque and shim figures right the first time, and get back in the field while the crop stands.
What's Inside This New Holland 18HB–36HB Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 11-30 | Precautionary Statements, Safety, Operating and Maintenance Safety, Hydraulic Safety, Welding Safety, Before Transporting, Transport Safety, Transporting Checks |
| Specifications | 31-34 | |
| Hydraulics - Draper Drive | 35-54 | Draper Drive |
| Hydraulics - Windrower Headers | 55-56 | |
| Hydraulics - Schematics and Troubleshooting | 57-62 | |
| Hydraulics - Pumps, Motors and Flow Dividers | 63-84 | Hydraulic Motors, Flow Dividers, Hydraulic Manifold Block |
| Hydraulics - Reel Lift | 85-98 | Reel Lift, Hydraulic Cylinders |
| Electrical - Windrower Headers | 99-106 | Electrical System, Lights, Remote Speed Control, Sickle Drive Speed Sensor, Automatic Reel Speed Control |
| Attachments - Knife Drive | 107-126 | Knife Drive, Cutting Systems, Guards, Connector Bar |
| Attachments - Draper Decks | 127-136 | Draper Decks, Drive Rollers |
| Decals | 137-144 | Safety Decals, Decal Locations, Decal Part Numbers, Warning Signs |
| Complete Contents | 145-152 | General Information, Precautionary Statements, Safety, Transporting, Specifications, Hydraulics, Draper Drive, Reel Lift, Windrower Headers, Schematics, Troubleshooting, Pumps, Motors, Flow Dividers, Electrical, Drivelines, Knife Drive, Feeding Components |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Knife head cross bolt torque | 55.5 N⋅m (41 lb ft) | p. 118 |
| Knife head bolts torque (Schumacher) | 13.5 N⋅m (9.96 lb ft) | p. 119 |
| Knife hold-down clip clearance at X | 0.125 - 0.64 mm (0.005 - 0.025 in) | p. 115 |
| Knife hold-down clip clearance at Y | less than 0.50 mm (0.020 in) | p. 115 |
| Fixed idler plate retaining bolt torque | 87 N⋅m (64 lb ft) | p. 135 |
| Transport tire pressure | 3.4 bar (50 psi) | p. 16 |
| Maximum transport speed | 32 km/h (20 mph) | p. 16 |
| Pressure relief valve setting | 207 bar (3000 psi) | p. 23 |
| Knife stroke | 84 mm (3.31 in) | p. 32 |
| Reel speed | 20-48 rpm | p. 32 |
| Reverser motor cap screw torque | 68 ± 7 N·m (50 ± 5 lb ft) | p. 76 |
| Pressure relief assembly torque | 34 N·m (25 lb ft) | p. 78 |
