New Holland TN70: Problems, Durability, and Specs

The TN70 is a Two-Wheel Drive (2WD) or Four-Wheel Drive (4WD) utility tractor from global agricultural equipment manufacturer New Holland. They originally produced it between 2000 and 2003 in the United States of America. Despite its age, the New Holland TN70 has stuck around, and you can still find a used one for purchase.

This article assesses the New Holland TN70s specifications. In addition, we look at TN70 problems and explore the machine's durability to help with purchase and rental considerations.

New Holland TN70 Specifications

New Hollands TN70 utility specifications suit some needs more than others. So, this section presents an overview of its key specifications to help determine if it meets your needs.

The specifications outlined include those for the TN70s dimensions, weight and height, engine, transmission, power, tires, mechanical system, hydraulics, mechanical, rear power take-off, and tractor hitch and attachments.

1) Dimensions

The New Holland TN70 has compact specs, with wheelbase lengths that range from 78.9 inches to 93.5 inches, depending on the model. The 2WD Rollover Protection Structure (ROPS) model has a wheelbase of 81.5 inches. For the 4WD ROPS model, the wheelbase is 78.9 inches. Furthermore, the wheelbase for the cab model of the 2WD is 83.9 inches. The 4WD cab model's wheelbase is 81.3 inches. The 4WD has an additional SuperSteer model that offers the most extended wheelbase at 93.5 inches.

TN70s overall length is 155 inches, and its height is 67.2 inches. Although not as small as some newer tractors, the compact size of the TN70 enhances its maneuverability in tight spaces, making it useful for work in small agricultural areas and versatile in different applications.

2) Weight and Height

The TN70 also varies in weight depending on the model and configuration. Its weight ranges from 4960 to 5800 pounds (lbs.). The 2WD and 4WD ROPS models have a shipping weight of 4960 lbs. and 5165 lbs. accordingly. The 2WD cab model has a shipping weight of 5055 lbs. Its 4WD counterpart has a 5655 lbs. shipping weight. The SuperSteer model has a shipping weight of 5360 lbs. with a ROPS and 5800 lbs. with a cab.

The operating weight of the cab model is 4850 lbs. and 5665 lbs. for the 2WD and 4WD models, respectively. Regardless of the model, the TN70 tractor should provide exceptional stability and traction while not overly cumbersome.

The machine's height measures 95.1 inches for the ROPS, 90.8 inches for the cab, and 90 inches for the exhaust. New Holland TN70s dimensions provide a balance between agility and functionality. Operators should be able to navigate through varying field conditions without much trouble.

3) Engine

New Holland equipped the TN70 tractor with an Iveco 8035 turbocharged diesel engine with a cylinder liquid-cooled design. The TN70s engine has a displacement of 2.9 liters. Its power output is 69 horsepower (hp) or 51.5 kilowatts (kW), so it should deliver sufficient power for various agricultural applications.

The engine's power output significantly improves on the TN70s predecessor, the tn65, which only offers a gross power of 57 hp.

The Iveco 8035 engine in the TN70s turbocharger enhances fuel delivery and efficiency. Also, its dual paper element air cleaner will help improve engine cleanliness.

4) Transmission

The TN70 tractor offers a few transmissions to suit operator needs or preferences. The synchro-command transmission comes in partially or fully synchronized versions, providing 8 or 16 forward and reverse gears, respectively. These gears will allow operators to select the right speed for different situations.

The partial and fully synchronized transmissions have a dry disc clutch with a mechanical shuttle or a wet disc with a power shuttle option.

5) Power

The TN70s gross power of 69 hp provides enough power for different tasks. The engine's net power is slightly lower at 65 hp, and the claimed power of the Power Take-Off (PTO) is 57 hp. Also, the tested power at the drawbar is 53.3 hp. The tested power at the PTO is 60.1 hp.

6) Tires

Here we have standard agricultural tires on the TN70. The 2WD model has 7.50-16 and 14.9-28 tires for the front and rear, respectively. For the 4WD version, we have 8.3-24 for the front. Its rear tire dimensions are 14.9-28. These tire sizes in good condition will provide sufficient traction in diverse situations and help maneuverability and stability in operation.

7) Mechanical

New Hollands TN70 has a sturdy chassis with planetary drives for improved traction for the 2WD and 4WD models. The power steering ensures easy maneuvering, while the differential hydraulic wet disc brakes should provide reliable stopping power. You can equip the TN70 tractor with an optional two-post folding ROPS for the safety and protection of operators.

8) Hydraulics

New Holland incorporated the TN70 with a pressure rating of 2755 Pounds Per Square Inch (PSI). It includes 2 or 3 hydraulic valves, and its pump flow ranges from 12.4 to 16.9 Gallons Per Minute (GPM). Steering flow ranges from 7.2 to 9.2 GPM. These specs should give you the ability to operate a variety of hydraulic implements and attachments.

9) Electrical

The TN70 uses a negative ground electrical system allowing compatibility with standard electrical connections. An alternator is here to recharge the battery efficiently. The ROPS version of the TN70 has a charging capacity of 45 amperes. In comparison, the cab version has a higher capacity of 65 amperes.

The battery has a cold cranking amperes rating (CCA) 730 and operates at 12 volts. The New Holland TN70s robust electrical system ensures consistent and reliable electrical performance.

10) Power Take-Off and Tractor Hitch

The New Holland TN70 has an independent rear PTO propelled by a dry disc clutch design, which should enable reliable power transfer. An independent rear PTO allows operators to engage the PTO separately from the tractor's other functions, providing flexibility in operating different implements or attachments.

The rear PTO's standard speed is 540 Revolutions Per Minute (RPM), enabling broad compatibility with PTO-powered implements.

The independent PTO on the TN70 is advantageous because it allows operators to engage and disengage the PTO without affecting the tractor's transmission or other functions.

For the Tractor Hitch, we have a rear Type II three-point hitch. It should enable compatibility with various attachments. This hitch system provides convenient and secure connections. Operators will be able to attach and detach implements as needed easily. The rear lift capacity of the TN70 is 3962 lbs.; the lifting capacity will allow you to use pretty heavy implements and increase productivity.

11) Attachments

The New Holland TN70 tractor is compatible with several attachments. New Holland provided various loaders for the TN70, including:

• New Holland 32LA Loader
• New Holland 32LA MSL Loader
• New Holland 33LA Loader
• New Holland 33LA MSL Loader

New Holland TN70 Tractor Problems

The New Holland TN70 is a compact, rugged utility tractor that excels in agricultural work. Nevertheless, it has some known issues. We discuss the TN70s tractor problems in this section.

1) Fuel System Failure

This issue has come to be associated with the TN70 series. It is a malfunction in the components and processes necessary for fueling the engine. Fuel system failure in the TN70 could result from several things, including damaged fuel lines, low fuel, and faulty gaskets or seals.

Fixing the fuel system will require an inspection of the components of the fuel system for issues. However, the easiest thing to check is if you have enough fuel in the tractor. If the fuel line, gaskets, seals, pump, or injectors have suffered damage, replace them. Also, check for leaks in the system and contaminants like dirt and debris that can clog fuel lines and filters.

To prevent fuel system failure in your TN70, do not let the fuel levels get too low. Also, frequently replace the fuel filter. In addition, service the fuel system regularly.

2) Starting Issues

A common issue with the TN70 is an engine starting problem. A known culprit for this is the glow plug. The glow plug preheats the engine cylinder to ensure the fuel ignites easily and the engine starts. It is especially beneficial in cold weather.

You should inspect the wiring for the glow plug to ensure proper contact. Also, check the fuse and ignitions switch for issues. You may need to replace the glow plug if there are no wiring, fuse, or ignition issues.

Other things that could cause starting issues include low battery, faulty starter, and fuel-related issues.

3) Front Axle Problem

The TN70 has a front axle that may experience problems because of its prominent role in load-bearing. Front axle problems in the New Holland TN70 could include steering issues, axle seal leaks, noises and vibrations, contamination, suspension problems, or misalignment.

It is best to consult a technician to fix the front axle problems on the TN70. To prevent rear axle problems, frequently clean areas that collect dirt. Also, get any leaks inspected and repaired as soon as possible.

New Holland TN70 Tractor Durability

New Hollands' reputation as a leading manufacturer of durable agricultural machinery serves the TN70's reputation. Like many products in their lineup, New Holland built the TN70 with sturdy and robust materials. It should withstand the rigors of everyday operation with careful use and maintenance.

The TN70's Iveco engine is known for its reliability and longevity. In addition, the engine's widespread use on various machines means there is a lot of technical support even today.

Despite its sturdiness and durability, this machine will not be as reliable as described without correct usage and adequate maintenance. To help with the durability, operators, and technicians must adhere to the manual for operating and servicing the TN70. Maintenance procedures must be frequent, and issues must be addressed promptly. If you do this, the TN70 is a great tractor that will serve you long.

However, New Holland no longer produces the TN70 tractor, so you will not get one brand new with guarantees or warranties. Yet, you can still purchase it in decent condition second-hand. Ensure you do your due diligence on the state of any used machine before purchasing. If possible, seek binding guarantees or warranties on the second-hand TN70 tractor you intend to purchase.

Conclusion

This piece has looked at the New Holland TN70's specifications, problems, and durability. The TN70 tractor combines a range of good specifications in a compact body for agricultural work. For example, the independent rear PTO enables flexibility in using different implements. Also, its type II three-point hitch ensures secure connections with a significant rear lift capacity. The electrical system and the tractor's compatibility with various attachments and implements also enhance this tractor's versatility.

Despite its advantages in terms of specifications, the TN70 does have a few known problems, including fuel system failure, starting issues, and front axle problems. Regarding durability, the TN70 is a robust machine that will serve you for years with proper usage and maintenance. However, make sure you do a thorough inspection of a second-hand TN70 before you make a purchase.