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The Origins of the 973 and 983 Series
Caterpillar’s track loaders have long been a staple in earthmoving, demolition, and material handling. The 973 and 983 models represent two distinct tiers in the lineup, each designed for different workloads and operational environments. Introduced in the late 1970s and refined through the 1980s and 1990s, these machines were built during Caterpillar’s golden era of mechanical engineering—before electronics dominated the cab.
The 973 was designed as a mid-size high-production loader, while the 983 was a brute-force machine aimed at quarrying, mining, and large-scale land clearing. Both models share Caterpillar’s DNA: rugged frames, powerful hydraulics, and a reputation for surviving decades of hard use.
Core Specifications and Performance Comparison
Here’s a breakdown of key specs:
Terminology Notes
Choosing between the 973 and 983 depends on several factors:
In 2009, a demolition contractor in Ohio ran both machines side by side. The 973 was used for precision work—loading trucks, grading pads, and clearing debris. The 983 handled concrete slabs and steel scrap, often working in tandem with a D8 dozer. After 18 months, the 973 had logged 1,200 hours with minimal downtime, while the 983 required a transmission rebuild at 2,000 hours due to aggressive loading cycles.
In another case, a land-clearing crew in Texas used a 983 to push stumps and root balls into burn piles. The machine’s weight and torque allowed it to uproot trees that would stall smaller loaders. However, the crew noted that the 973 was faster when it came to cleanup and finish grading.
Maintenance and Parts Availability
Both machines benefit from Caterpillar’s extensive parts network. However:
The 973 holds its value better in the used market due to its versatility and lower transport costs. The 983 appeals to niche buyers in mining and bulk material handling. For owner-operators, the 973 offers a better balance of performance and cost. For fleet managers with large-scale operations, the 983 can be a strategic asset.
Conclusion
Choosing between the Caterpillar 973 and 983 depends on your workload, terrain, and long-term goals. The 973 is a nimble, efficient machine that fits into most job sites and budgets. The 983 is a heavy-duty beast built for serious production. Both carry the Caterpillar legacy of durability and power—but only one will match your mission.
Caterpillar’s track loaders have long been a staple in earthmoving, demolition, and material handling. The 973 and 983 models represent two distinct tiers in the lineup, each designed for different workloads and operational environments. Introduced in the late 1970s and refined through the 1980s and 1990s, these machines were built during Caterpillar’s golden era of mechanical engineering—before electronics dominated the cab.
The 973 was designed as a mid-size high-production loader, while the 983 was a brute-force machine aimed at quarrying, mining, and large-scale land clearing. Both models share Caterpillar’s DNA: rugged frames, powerful hydraulics, and a reputation for surviving decades of hard use.
Core Specifications and Performance Comparison
Here’s a breakdown of key specs:
- Caterpillar 973
- Operating Weight: ~50,000 lbs
- Engine: CAT 3306 turbocharged diesel
- Horsepower: ~210 hp
- Bucket Capacity: ~3.5–4.0 cubic yards
- Undercarriage: Sealed and lubricated track (SALT)
- Transmission: Hydrostatic or powershift (varies by year)
- Operating Weight: ~50,000 lbs
- Caterpillar 983
- Operating Weight: ~65,000–70,000 lbs
- Engine: CAT D343 or later 3406
- Horsepower: ~275–300 hp
- Bucket Capacity: ~5.0–6.0 cubic yards
- Undercarriage: Heavy-duty SALT
- Transmission: Powershift only
Terminology Notes
- SALT (Sealed and Lubricated Track): A track system that reduces wear and maintenance by sealing lubricant inside the pin and bushing assembly
- Powershift Transmission: A hydraulically actuated gearbox allowing gear changes without clutching
- Hydrostatic Drive: A variable-speed drive system using hydraulic pumps and motors for smooth directional control
- Bucket Capacity: The volume of material the loader bucket can carry, measured in cubic yards
Choosing between the 973 and 983 depends on several factors:
- Job Site Size and Access
The 973 can maneuver in tighter spaces and is easier to haul on standard lowboys. The 983 may require special permits and larger trailers.
- Material Type
For dense materials like rock, clay, or demolition debris, the 983’s extra weight and horsepower offer better breakout force. For sand, topsoil, or general fill, the 973 is more fuel-efficient and responsive.
- Fuel Consumption and Maintenance
The 973 burns less fuel and has fewer wear points. The 983’s larger engine and heavier undercarriage mean higher operating costs but longer intervals between rebuilds.
- Operator Fatigue and Visibility
The 973’s cab layout is more ergonomic, especially in later models. The 983’s older design can feel cramped and noisy, though some units have been retrofitted with soundproofing and upgraded seats.
In 2009, a demolition contractor in Ohio ran both machines side by side. The 973 was used for precision work—loading trucks, grading pads, and clearing debris. The 983 handled concrete slabs and steel scrap, often working in tandem with a D8 dozer. After 18 months, the 973 had logged 1,200 hours with minimal downtime, while the 983 required a transmission rebuild at 2,000 hours due to aggressive loading cycles.
In another case, a land-clearing crew in Texas used a 983 to push stumps and root balls into burn piles. The machine’s weight and torque allowed it to uproot trees that would stall smaller loaders. However, the crew noted that the 973 was faster when it came to cleanup and finish grading.
Maintenance and Parts Availability
Both machines benefit from Caterpillar’s extensive parts network. However:
- The 973 shares components with other mid-size loaders and excavators, making parts more interchangeable
- The 983’s older engine and transmission may require sourcing from salvage yards or remanufacturers
- Undercarriage parts for both are widely available, though the 983’s heavier components cost more to replace
- Engine oil and filter changes every 250 hours
- Hydraulic fluid and filter every 500 hours
- Track tension checks and roller inspections monthly
- Transmission service every 1,000 hours
The 973 holds its value better in the used market due to its versatility and lower transport costs. The 983 appeals to niche buyers in mining and bulk material handling. For owner-operators, the 973 offers a better balance of performance and cost. For fleet managers with large-scale operations, the 983 can be a strategic asset.
Conclusion
Choosing between the Caterpillar 973 and 983 depends on your workload, terrain, and long-term goals. The 973 is a nimble, efficient machine that fits into most job sites and budgets. The 983 is a heavy-duty beast built for serious production. Both carry the Caterpillar legacy of durability and power—but only one will match your mission.
