This 42-page New Holland 340-359 Service Manual PDF (OEM #40663002) delivers exact factory rebuild data for all ten grinder-mixer models. The guide details model-specific gearbox disassembly and assembly, split by serial number breakpoints to match your machine. Drive shaft rebuild sequences cover bearing cone heating, sheave installation, and end-play adjustment. Hammer mill shaft and bearing replacement instructions address every variant, including the 340 and 359. A dedicated labor guide provides flat-rate time estimates for augers, drives, hammer mills, hydraulic systems, power bale feeders, remote controls, and scale work. Gear backlash sets to 0.002"-0.015" and tapered roller bearing drag confirms at 2-6 in. lbs. (0.226-0.678 N·m). The file is fully bookmarked by section, so you can search any spec on your phone and get back to grinding.
What's Inside This New Holland 340–359 Manual
| System | Pages | Key Topics |
|---|---|---|
| Gearboxes | 3-18 | Models 340 and 350, Disassembly, Assembly, Figure 1-1, Adjustment, Models 351, 352, 353 and 354 |
| Drive Shaft Assemblies | 19-22 | Models 340, 350, 351, 352, 353, 354, 355, 357 |
| Hammer Mill Shaft and Bearing Replacement | 23-36 | Models 352, 353, 354, 355 and 358, Removal, Installation, Models 355 and 358, Removal and Disassembly |
| Labor Guide | 37-42 | Augers, Drives, Frame, Hammer Mill, Hydraulic System, Power Bale Feeder, Remote Control, Scale |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 351, 352, 353 (below serial number 400864), 354 | ||
| Tapered roller bearing torque (shaft rotation) | 2 in. lbs.-6 in. lbs. (0.226 N·m-0.678 N·m) | p. 6 |
| Gear backlash | 0.002"-0.015" | p. 6 |
| 353 (above serial number 400864), 355 | ||
| Output shaft bearing drag | 2 in. lbs.-6 in. lbs. (0.226 N·m-0.678 N·m) | p. 7 |
| Gear backlash | 0.002"-0.015" maximum | p. 7 |
| 352, 353, 354, 355 (below serial number 733521), 358 (below serial number 733257) | ||
| Hammer mill drive belt sheaves alignment | within 1/32" (0.8 mm) | p. 23 |
| Hammer mill drive belt deflection | 1/4"-5/16" (6.5 mm-8 mm) with a 50 lb. (22 kg) force | p. 23 |
| 359 | ||
| Hammer mill drive sheave bolt torque | 165 ft. lbs. (234 N·m) | p. 35 |
| Hammer mill drive belt deflection | 5/16" (8 mm) with a 70 pounds (31 kg) force | p. 36 |
| Gearbox drive chain sag | 1/8" to 1/2" (3 mm-12 mm) | p. 36 |
| 358 | ||
| Gearbox drive chain sag | 1/8"-1/2" (3 mm-12mm) | p. 11 |
| 340, 350 | ||
| Gear backlash | 0.007"-0.037" | p. 4 |
| 357 | ||
| Gear backlash | 0.005"-0.015" | p. 9 |
New Holland 340–359 Common Problems This Manual Covers
New Holland 359 grinder-mixer produces severe vibration and loud grinding noise near the rear fan housing. p. 34
Inspect the hammer mill fan assembly for loose hardware. Tighten the fan bolts to 90 ft. lbs. (122 N·m) as shown on page 35. Verify the rear bearing cup end play, adjusting it to fall between 0.005" to 0.014" (0.127 mm to 0.356 mm) using the procedures on page 34.
Manual Section: Hammer Mill Shaft And Bearing ReplacementHeavy clunking noise from the main gearbox when engaging the tractor PTO under heavy load. p. 4
Measure the gearbox backlash with a dial indicator. For models 340 and 350, set the backlash between 0.007" and 0.037" following the adjustment steps on page 4. Swap out worn gears if the clearance exceeds these limits and refill with the correct gear oil.
Manual Section: GearboxesExcessive driveline vibration and rapid drive belt wear on the main power feed system. p. 20
Confirm the drive shaft sheave alignment using a straightedge. Align the sheaves within 1/32" (.78 mm) as outlined on page 20. Check the drive shaft housing for excessive end play and replace worn components if they prevent holding this strict tolerance.
Manual Section: Drive Shaft AssembliesGearbox housing runs excessively hot and leaks oil around the main input shaft seals. p. 6
Evaluate the tapered roller bearing torque by rotating the shaft. Adjust the bearing drag to measure between 2 in. lbs. and 6 in. lbs. (0.226 N·m-0.678 N·m) as specified on page 6 for models 351, 352, and 354. Reseal the housing to stop further fluid loss.
Manual Section: GearboxesFrequently Asked Questions
What is the correct gearbox backlash setting for New Holland 340 and 350 grinder-mixers?
The manual specifies gearbox backlash between 0.007" and 0.037" for the 340 and 350 models. Measure with a dial indicator following the adjustment steps on page 4. Replace worn gears if the clearance exceeds these limits.
How do I adjust hammer mill fan bolt torque and bearing end play on the New Holland 359?
Tighten the fan bolts to 90 ft. lbs. (122 N·m) as shown on page 35. Then verify the rear bearing cup end play, adjusting it to between 0.005" and 0.014" (0.127 mm to 0.356 mm) using the procedures on page 34.
What is the tapered roller bearing drag specification for New Holland 351–354 grinder-mixers?
Rotate the shaft and adjust bearing drag to 2 in. lbs.–6 in. lbs. (0.226 N·m–0.678 N·m) as specified on page 6 for models 351, 352, 353 (below serial number 400864), and 354. Maximum gear backlash for the same group is 0.002"–0.015".
What format is this manual in?
This is a 42-page searchable PDF ready for immediate download. It works on any device, allowing you to pull it up on your phone while working on your 340 grinder-mixer. There is no shipping or waiting involved.
Document Quality
This is a scanned service manual for New Holland Grinder-Mixers. The document includes an OCR layer, allowing you to search and copy text from all pages. Text quality is crisp and consistently easy to read throughout the manual. Diagrams and illustrations are a mix of clear rasterized line drawings and photos, with all labels easily readable. Pages are clean, free from scan artifacts, stains, or skewed content, though there are three blank pages that appear to be filler.
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