Evaluating the International TD-15B as a Backup Dozer

[MikePhua]

The TD-15B and Its Historical Significance
The International Harvester TD-15B crawler dozer was introduced in the 1970s as part of the company’s long-standing TD series, which had been serving construction, forestry, and landfill operations since the 1940s. International Harvester, founded in 1902, was a major player in heavy equipment manufacturing until its construction division was absorbed into Dresser Industries in the 1980s. The TD-15B was designed to fill the mid-size dozer niche, offering a balance between power, maneuverability, and affordability.
With an operating weight of approximately 33,000 pounds and a power output in the 150–165 horsepower range, the TD-15B was often compared to Caterpillar’s D6 series. It featured a torque converter transmission, hydraulic blade control, and optional configurations such as winches and double-angle tilt blades. These features made it suitable for landfill cleanup, site leveling, and light-to-medium earthmoving tasks.
Comparing the TD-15B to the Caterpillar D6
The Caterpillar D6 has long been a benchmark in the mid-size dozer category. While the D6 is known for its rugged undercarriage and parts availability, the TD-15B offers several advantages in specific use cases:

• The TD-15B’s torque converter transmission provides smoother operation in variable terrain, especially useful in landfill environments where traction can be inconsistent.
  
• The double-angle tilt blade allows for more precise shaping and slope control, which is beneficial for contouring landfill surfaces or grading access roads.
  
• The TD-15B often comes equipped with a rear winch, adding utility for pulling debris or assisting stuck vehicles.
  

However, the D6 typically holds its value better due to Caterpillar’s global parts network and brand recognition. For a machine used only five days a month, the TD-15B may offer a more cost-effective solution if reliability and parts access are confirmed.
Assessing Suitability for Landfill Operations
Landfill environments present unique challenges for heavy equipment:

• Debris and uneven terrain can strain undercarriage components
  
• Frequent stop-and-go operation demands responsive hydraulics
  
• Exposure to corrosive materials requires durable seals and fittings
  

The TD-15B’s hydraulic blade system and robust frame make it well-suited for these conditions. Its weight and blade width allow for efficient spreading and compaction of cover material. Additionally, the winch can assist in repositioning containers or clearing obstructions.
Operators should inspect the following before committing to purchase:

• Undercarriage wear, especially track pads and rollers
  
• Hydraulic cylinder seals and blade articulation points
  
• Transmission responsiveness and torque converter engagement
  
• Cooling system integrity, particularly in dusty environments
  

Parts Availability and Maintenance Considerations
One of the primary concerns with older International models is parts availability. While many components are still supported through aftermarket suppliers and salvage yards, certain proprietary items—such as transmission internals or blade control valves—may be harder to source.
Recommended strategies include:

• Establishing a relationship with a regional salvage yard specializing in IH/Dresser equipment
  
• Stocking common wear items like filters, seals, and track bolts
  
• Consulting with legacy mechanics familiar with TD-series machines
  
• Cross-referencing parts with Dresser TD-15C models, which share some components
  

Routine maintenance should include:

• Hydraulic fluid changes every 500 hours
  
• Track tension checks monthly
  
• Blade pivot lubrication weekly
  
• Cooling system flush annually
  

Field Anecdotes and Practical Experience
In Alberta, a landfill operator acquired a TD-15B as a backup unit for cleanup and slope maintenance. The machine was used roughly five days per month and performed reliably for over two years. The operator noted that while the blade hydraulics were slower than newer machines, the double-angle tilt allowed for precise grading on uneven fill.
Another contractor in Montana used a TD-15B for snow removal and site prep. He appreciated the winch for pulling logs and the machine’s ability to push through compacted material. After replacing the track pads and resealing the blade cylinders, the dozer ran without major issues for over 1,000 hours.
Conclusion
The International TD-15B remains a viable option for light-duty landfill work and occasional grading tasks. While it may not match the resale value or parts support of a Caterpillar D6, its torque converter transmission, blade versatility, and winch capability make it a strong candidate for backup use. With proper inspection and a proactive maintenance plan, the TD-15B can deliver dependable performance at a fraction of the cost of newer machines. For operators seeking a practical solution without overcapitalizing, this classic dozer still has plenty of life left in its tracks.