Part of the New Holland Repair Manuals.
An hour from now you could have the twister off your baler and on the bench with this New Holland 311 service manual PDF, a 38-page factory guide (OEM 40331803) covering fourteen rectangular baler models, from the 311 through the 575 plus the 505 heavy-duty twister and the 1425 and 1426. The whole book lives on the wire twister: removal, teardown of the pinion support, frame, shuttle cam shaft, and clutch, then reassembly, mounting, and timing. Stack dimension charts fill the back third, drawn separately for each model group so your shim and spacer order comes out right. Set twister frame height at 3-7/16 inches, hold the twist wrapper 1/16 inch off the hook shank, and torque the bevel gear clamp bolt to 25 ft. lbs. (34 N·m) on the 420 through 426. A mis-stacked twister means missed ties and a second teardown mid-baling. Print the pages you need, let them get greasy, and keep the bookmarked PDF on file for next season.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Removing Twister Assembly From Baler | 3 | Hold-Down Hardware, Twister Arm Bolt, Trip Arm Cam Follower Nut, Twister Drive Chain, Wire Guides, Tail Twist Wrappers |
| Twister Disassembly | 4-6 | Clamp Bolt, Twister Arm, Brake, Disc, Woodruff Key, Bearing |
| Servicing the Twister Pinion Support Assembly | 7 | Groove Pin, Sprocket Set Screws, Pinion Wear Plate, Shims |
| Assembly of Twister Pinion Support | 8 | Spacer Washers, Drive Lock Pin, Woodruff Key, Sprocket, Wear Plate, Shim |
| Disassembly of the Twister Frame Assembly | 9-10 | Twister Hook Shaft Drive Sprockets, Twister Hook Shafts, Wire Shear Clamp Jam Nuts, Pivot Bolts, Shear Plates, Clamp Plate Stacks |
| Servicing the Twister Frame | 11 | Bushings |
| Servicing the Shuttle Cam Shaft Assembly | 12 | Shuttle Cam Bearing, Cam Follower Bearings, Cam Bearing Support, Shaft, Roll Lock Pin |
| Servicing Wire Shear Clamp Assemblies, Shear Plate Clamp Stacks and Guides | 13 | Shear Plates, Clamp Plate Stacks, Wire Shear Clamp, Pivot Bolts |
| Servicing Twister Clutch | 14 | Pawl Pivots, Rollers, Pawl Assembly, Pins |
| Assembling Twister Frame Shuttle Shaft | 15 | Cam Bearing Support, Shaft, Cam Follower Bearing, Support |
| Shuttle Bar Assembly | 16 | Shuttle Bar, Support, Cam Follower, Bearing |
| Twister Hooks and Shafts Installation | 17 | Hooks, Shafts, Collars, Bushings, Drive Sprockets |
| Assembling the Twister | 18-21 | Twister Drive Hub, Spacer Washers, Snap Ring, Cotter Pin, Twister Frame Assembly |
| Mounting Twister on Baler | 22-23 | Bearing Support Hardware, Hold-Down Hardware, Trip Arm Roller, Drive Chain, Flywheel |
| Twister Frame Height | 24 | Bale Chamber, Main Plate, Bracket |
| Twister Hook Height | 25 | Twister Hook, Bale Case, Unloading Rollers, Mounting Bolts, Set Collar |
| Twister Wrapper and Wire Guide | 26-27 | Twist Wrapper, Wire Guide, Needle, Twister Hook, Twister Hook Shaft |
| Twister Stack Dimensions, 311 - 316 | 28 | Clutch Assembly, Left Bearing Assembly, Twister Frame, Bevel Gear, Right Bearing Assembly |
| Twister Stack Dimensions, 320 - 326 | 29 | Clutch Disc Assembly, Twister Frame, Bevel Gear, Brake Spring, Spacer Washers |
| Twister Stack Dimensions, 565 - 570 | 30 | Special Washer, Twister Frame, Bevel Gear, Bracket, Spacer Washers |
| Twister Stack Dimensions, 575 | 31 | Special Washer, Twister Frame, Bevel Gear, Spacer Washers, Wire Guide |
| Twister Stack Dimensions, 16” X 18” Balers | 32-33 | Collar, Twister Frame, Spacer Washers, Spacer |
| Assembling the 505 Heavy-Duty Twister | 34 | Clutch Disc Assembly, Left Bearing Support, Trip Return Cam, Twister Frame, Bevel Gear, Pinion Bracket, Crank Arm, Twister Brake Assembly |
| Twister Stack Dimensions, 505 | 35-38 | Special Washer, Twister Frame, Bevel Gear, Spacer Washers, Bracket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 420, 425, 426 | ||
| Twister bevel gear clamp bolt torque | 25 ft. lbs. (34 N·m) | p. 20 |
| All Models | ||
| Twister frame height | 3-7/16 inches | p. 24 |
| Twister hook height from bale case | 2-1/4 inches | p. 25 |
| Twist wrapper clearance from twister hook shank | 1/16 inch | p. 26 |
| Twist wrapper distance from twister hook | 1/4 inch | p. 26 |
| Wire guide clearance from twister hook shaft | 1/8 inch | p. 26 |
| Wire guide clearance from twister hook | 1/4 inch | p. 26 |
| Twister bevel gear clamp bolt torque | 25 ft-lbs | p. 20 |
| Twister pinion backlash | 0.002-0.010 inches | p. 20 |
| Twister pinion clearance | 0.002-0.007 inches | p. 20 |
| 320, 326 | ||
| Brake spring length | 1-5/8 inches | p. 29 |
| 420, 425, 426, 1425, 1426 | ||
| Brake spring length | 1-1/4 inches | p. 33 |
