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 New Holland 311–326, 420–430, 505, 565–575, 1425–1426 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 |
New Holland 311–326, 420–430, 505, 565–575, 1425–1426 Common Problems This Manual Covers
New Holland 575 baler ties the left side but right wire twist shreds and pulls loose
Check twister hook timing before replacing parts: turn the flywheel by hand and confirm both hooks reach home position together, following the timing procedure on page 24. Inspect the shear plates and clamp stacks on the failing side for wear. After any correction, run the baler empty at 540 RPM and trip the twister several cycles before baling.
Manual Section: Twister Hook Timing p. 24Wire pulls to one edge of the bale and twists come out ragged or loose
Adjust the twist wrappers and wire guides so the needles and twister hooks pick up wire square, using the clearance procedure on page 26. Verify each wire guide is tight and not grooved. Shut the PTO off, turn the flywheel one full revolution (360 degrees) by hand, and watch that wire feeds centered through both guides.
Manual Section: Twist Wrapper And Wire Guide Adjustment p. 26Wire won't shear clean, ends fray, and cut wire hangs up in the shear clamp
Inspect the shear plates and clamp plate stacks for rounded edges and wire grooves, following the service steps on page 13. Hold each pivot bolt and back the jam nut off one full turn to free the stack, then reassemble with the plates seated flat. Replace any shear plate that shows a worn cutting edge; dull plates fray every cut.
Manual Section: Servicing Wire Shear Clamp Assemblies p. 13Twister trips but hooks barely turn, clutch ratchets and skips under load
Remove the twister clutch and inspect the pawl assembly, pawl pivots, and rollers for flat spots or seized pins, using the procedure on page 14. Replace worn pawls and rollers as a set, then check drive chain tension at the twister. Test by tripping the twister with the baler running empty at 540 RPM before returning to the field.
Manual Section: Servicing Twister Clutch p. 14Twister hooks scuff the bale case and wire hangs on the hooks after service work
Set twister hook height from the bale case using the mounting bolts and set collars, following the adjustment on page 25. Check twister frame height against the main plate first, since a low frame throws every hook off. Rotate the flywheel a full 360 degrees by hand and confirm neither hook drags the bale case.
Manual Section: Twister Hook Height p. 25Frequently Asked Questions
What is the twister bevel gear clamp bolt torque on New Holland 311, 316, 320, 326, 420, 425, 426, 505, 565, 570, 575?
The twister bevel gear clamp bolt must be tightened to 25 ft. lbs. (34 N·m) of torque. p. 20
New Holland 311, 316, 320, 326, 420, 425, 426, 505, 565, 570, 575 cam follower roller to twister bevel gear clearance?
The clearance between the cam follower roller and the twister bevel gear should be between .010" and .060" (0.3 to 1.5 mm). p. 20
What is the specified vertical play for the twister pinion?
You should install spacer washers as required to obtain a maximum of 1/32" vertical play for the pinion. p. 8
What is the required distance between the top of the bale chamber and the lower edge of the main plate on the twister frame?
The distance between the top of the bale chamber and the lower edge of the main plate on the twister frame should be 3-7/16" (87 mm). p. 24
What is the correct height for the twister hook from the bale case?
The twister hook should be adjusted so the bottom edge of the hook is 2-1/4" (57 mm) from the top of the bale chamber. p. 25
What do I get after purchasing this New Holland 311 manual?
All 38 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Are there any print restrictions on this New Holland 311 manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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