New Holland 906 - User Manual

New Holland

Posthole Digger Specifications

906

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MODEL 906 LIGHT DUTY 906 MEDIUM DUTY 906 HEAVY DUTY

itch category I I or II I or II

Input rpm on PTO....................................................................................................................................................540..............................................................................................

Max. tractor PTO horsepower 35 hp 55 hp 90 hp

Drive protection ..................................................................................................................................................shear bolt.........................................................................................

Output shaft diameter, in. (mm)...........................................................................................................................2 (50.8) ..........................................................................................

Maximum digging depth (less extensions), in. (mm)

Without extensions .......................................................................................................................................42 (1066.8) .......................................................................................

With 9-inch extension ...................................................................................................................................51 (1295.4) .......................................................................................

With 14-inch extension.................................................................................................................................56 (1422.4) .......................................................................................

Square steel tube diameter

Boom, in. (mm)................................................................................................................................................3 (76.2) ..........................................................................................

Mast, in. (mm)................................................................................................................................................3.5 (88.9).........................................................................................

Down pressure kit n/a n/a optional

Weight, lbs. (kg) 235 (106.6) 260 (117.9) 335 (152.0)

AUGERS

Semi-double flight, in. (mm)...............................................................................................................................6 (152.4) .........................................................................................

....................................................................................................................................................................9 (228.6) .........................................................................................

12 (304.8) 12 (304.8)

Double flight, in. (mm)........................................................................................................................................9 (228.6) .........................................................................................

12 (304.8) 12 (304.8)

14 (355.6) 14 (355.6)

18 (457.2) 18 (457.2)

24 (609.6)

Safety begins with a thorough understanding of

the equipment. Always make sure you and

your operators read the Operator’s Manual

before using the equipment. Pay close

attention to all safety and operating

decals and never operate machinery

without all shields, protective devices

and structures in place.

Design, materials and/or specifications are subject to

change without notice and without liability therefor.

Specifications are applicable to units sold in Canada, the

United States, its territories and possessions, and may

var y outside these areas.

New Holland is a registered trademark of CNH America LLC.

Visit our Web site at www.newholland.com/na. Or, call toll-free 866-NEW-HLND (866-639-4563).

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Do you have a question about the New Holland 906 and is the answer not in the manual?

The New Holland 906 Posthole Digger is a robust agricultural implement designed for efficiently digging postholes. It is available in three main configurations: 906 Light Duty, 906 Medium Duty, and 906 Heavy Duty, each tailored to different power requirements and operational demands.

Function Description

The primary function of the New Holland 906 Posthole Digger is to create holes in the ground for posts, fences, or other agricultural and construction needs. It attaches to a tractor's power take-off (PTO) system, which provides the rotational power to drive the auger into the soil. The various models offer different levels of power and capability, allowing users to select the appropriate digger for their specific tractor and soil conditions.

Important Technical Specifications

The technical specifications vary across the three models, highlighting their distinct capabilities:

Hitch Category:

All three models (Light Duty, Medium Duty, Heavy Duty) are compatible with Category I hitches.
The Medium Duty and Heavy Duty models also offer compatibility with Category II hitches, providing greater versatility for a wider range of tractors.

Input RPM on PTO:

All models operate at a standard PTO input speed of 540 RPM, ensuring compatibility with most agricultural tractors.

Max. Tractor PTO Horsepower:

906 Light Duty: Requires a maximum of 35 hp from the tractor's PTO. This model is suitable for smaller tractors and lighter digging tasks.
906 Medium Duty: Requires a maximum of 55 hp from the tractor's PTO. This offers increased power for more demanding applications.
906 Heavy Duty: Requires a maximum of 90 hp from the tractor's PTO. This is the most powerful option, designed for heavy-duty digging and challenging soil conditions.

Drive Protection:

All models utilize a shear bolt mechanism for drive protection. This is a crucial safety feature that prevents damage to the digger's drivetrain and the tractor's PTO system by breaking if the auger encounters an obstruction that causes excessive torque.

Output Shaft Diameter:

All models feature an output shaft diameter of 2 inches (50.8 mm), indicating a consistent and robust connection point for the augers.

Maximum Digging Depth (less extensions): The digging depth is measured without additional auger extensions:

Without extensions: All models can achieve a maximum digging depth of 42 inches (1066.8 mm).
With 9-inch extension: All models can achieve a maximum digging depth of 51 inches (1295.4 mm).
With 14-inch extension: All models can achieve a maximum digging depth of 56 inches (1422.4 mm). These figures demonstrate the base digging capabilities and the incremental depth achievable with standard extensions.

Square Steel Tube Diameter:

The specifications do not explicitly state the square steel tube diameter for the main frame or boom, but it is implied to be robust enough for the respective duty levels.

Boom:

All models feature a boom length of 3 inches (76.2 mm). This measurement likely refers to a specific dimension of the boom structure rather than its overall length.

Mast:

All models have a mast length of 3.5 inches (88.9 mm). Similar to the boom, this is likely a specific structural dimension.

Down Pressure Kit:

906 Light Duty: A down pressure kit is not available (n/a).
906 Medium Duty: A down pressure kit is not available (n/a).
906 Heavy Duty: A down pressure kit is an optional feature. This kit allows for additional downward force to be applied to the auger, which can be beneficial in hard or compacted soils, improving digging efficiency for the heavy-duty model.

Weight:

906 Light Duty: Weighs 235 lbs (106.6 kg).
906 Medium Duty: Weighs 260 lbs (117.9 kg).
906 Heavy Duty: Weighs 335 lbs (152.0 kg). The increasing weight across the models reflects their enhanced structural integrity and power handling capabilities.

Augers: The digger supports various auger sizes, available in semi-double flight and double flight configurations:

Semi-double flight augers (in. (mm)):
- 6 (152.4)
- 9 (228.6)
- 12 (304.8) - Available for all three models.
- The 906 Light Duty and Medium Duty models support 6, 9, and 12-inch semi-double flight augers.
- The 906 Heavy Duty model specifically lists 12-inch semi-double flight augers.
Double flight augers (in. (mm)):
- 9 (228.6)
- 12 (304.8) - Available for all three models.
- 14 (355.6) - Available for all three models.
- 18 (457.2) - Available for all three models.
- 24 (609.6) - Exclusively available for the 906 Heavy Duty model. The availability of larger double flight augers for the Heavy Duty model underscores its capacity for larger diameter holes and more demanding tasks. Double flight augers generally offer more efficient material removal, especially in challenging soil types.

Usage Features

The New Holland 906 Posthole Digger is designed for straightforward attachment and operation with a tractor. Key usage features include:

Tractor Compatibility: The different hitch categories (I or I/II) ensure broad compatibility with various tractor sizes. The specified PTO horsepower requirements help users match the digger to an appropriately powered tractor, preventing underperformance or strain on the equipment.
Depth Versatility: The ability to add 9-inch and 14-inch extensions provides flexibility in digging depth, allowing operators to achieve the required hole depth for different post lengths without needing specialized equipment.
Auger Selection: A wide range of auger diameters, from 6 inches to 24 inches, allows for diverse applications, from small fence posts to larger utility poles. The choice between semi-double flight and double flight augers offers options for different soil conditions and digging efficiency. Double flight augers are generally preferred for faster and cleaner digging in most soil types.
Optional Down Pressure Kit (Heavy Duty): For the 906 Heavy Duty model, the optional down pressure kit enhances digging performance in very hard or rocky ground by applying additional force, reducing the effort required from the tractor's hydraulics and improving penetration.
Safety Features: The shear bolt drive protection is a critical safety and maintenance feature, safeguarding both the digger and the tractor from damage due to unexpected obstructions. Operators are reminded to always read the Operator's Manual and ensure all shields and protective devices are in place before use.

Maintenance Features

Maintenance of the New Holland 906 Posthole Digger primarily revolves around ensuring the longevity of its mechanical components and the effectiveness of its safety features:

Shear Bolt Replacement: The shear bolt is a consumable safety component. Regular inspection and replacement of the shear bolt when it breaks (due to overload) are essential. Keeping spare shear bolts on hand is recommended for uninterrupted operation.
Lubrication: As with any PTO-driven implement, regular lubrication of moving parts, such as the gearbox, universal joints, and bearings, is crucial to minimize wear and ensure smooth operation. The Operator's Manual would provide specific lubrication points and schedules.
Auger Inspection and Replacement: Augers are subject to wear, especially the cutting edges and tips. Regular inspection for wear, damage, or dullness is important. Worn augers should be sharpened or replaced to maintain digging efficiency and reduce strain on the digger.
Structural Integrity Checks: Periodically inspect the boom, mast, and frame for any signs of cracks, bends, or other structural damage. Tighten any loose bolts or fasteners.
PTO Shaft Maintenance: The PTO shaft should be kept clean, lubricated, and free from damage. Ensure the safety shields on the PTO shaft are intact and properly installed.
Storage: Proper storage, especially during off-season, can significantly extend the life of the digger. Storing it in a dry, protected area helps prevent rust and corrosion.

The New Holland 906 Posthole Digger series provides reliable and efficient solutions for various post-hole digging needs, with models suited for light, medium, and heavy-duty applications, all while emphasizing safety and ease of maintenance.