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Legacy of the CAT 955H
The Caterpillar 955H track loader was part of a lineage that helped define mid-20th-century earthmoving. Introduced in the late 1960s, the 955H evolved from earlier models like the 955K and 955L, offering improved hydraulic systems, a more robust undercarriage, and a torque converter transmission that made it easier to operate in variable terrain. It was powered by the Caterpillar D330 engine, a 4-cylinder diesel producing around 100 horsepower, and weighed approximately 30,000 pounds.
Caterpillar Inc., founded in 1925, had by then become a global leader in construction machinery. The 955H was manufactured during a time when Caterpillar was expanding aggressively into international markets, and the model saw widespread use in Europe, North America, and parts of Asia. Though exact production numbers are hard to pin down, estimates suggest tens of thousands were sold globally before the model was phased out in favor of more advanced hydrostatic loaders in the 1980s.
Understanding the Track Loader’s Core Systems
A unit offered for $2,857 may seem like a bargain, but the real cost lies in restoration. If the machine has been sitting idle for years, expect deterioration in seals, hoses, and electrical components. Loose tracks often point to hydraulic adjuster failure, which is repairable but may indicate broader neglect.
Inspect the following:
One technician in Ontario recalled a 955H that had been parked in a field for over a decade. The machine ran, but the undercarriage was so degraded that it couldn’t be moved safely. Another operator in Missouri described a unit with mismatched cab and hood components, likely cobbled together from multiple machines. These stories are common among vintage equipment buyers.
Restoration requires:
The CAT 955H remains a symbol of Caterpillar’s golden era, but buying one today is a gamble. While the price may be low, the cost of making it functional can be steep. For collectors or experienced mechanics, it can be a rewarding project. For others, it may be wiser to invest in a newer model with better parts support and safety features. As with any vintage machine, the key is knowing what you're getting—and being prepared for what it might cost to bring it back to life.
The Caterpillar 955H track loader was part of a lineage that helped define mid-20th-century earthmoving. Introduced in the late 1960s, the 955H evolved from earlier models like the 955K and 955L, offering improved hydraulic systems, a more robust undercarriage, and a torque converter transmission that made it easier to operate in variable terrain. It was powered by the Caterpillar D330 engine, a 4-cylinder diesel producing around 100 horsepower, and weighed approximately 30,000 pounds.
Caterpillar Inc., founded in 1925, had by then become a global leader in construction machinery. The 955H was manufactured during a time when Caterpillar was expanding aggressively into international markets, and the model saw widespread use in Europe, North America, and parts of Asia. Though exact production numbers are hard to pin down, estimates suggest tens of thousands were sold globally before the model was phased out in favor of more advanced hydrostatic loaders in the 1980s.
Understanding the Track Loader’s Core Systems
- Track Adjusters: Hydraulic cylinders that maintain track tension. Leaks here can cause slack tracks, which affect stability and steering.
- Undercarriage Components: Includes rails, sprockets, rollers, and track shoes. These wear heavily and are costly to replace.
- Torque Converter Transmission: Allows smooth power delivery but requires clean fluid and regular maintenance.
- Ripper Attachment: A rear-mounted tool for breaking up hard ground. Not all units have this, and retrofitting can be expensive.
A unit offered for $2,857 may seem like a bargain, but the real cost lies in restoration. If the machine has been sitting idle for years, expect deterioration in seals, hoses, and electrical components. Loose tracks often point to hydraulic adjuster failure, which is repairable but may indicate broader neglect.
Inspect the following:
- Track Tension and Shoe Wear: Replacement track shoes can cost $50–$100 each, and a full set may exceed $3,000.
- Cab and Hood Fitment: Many older machines have modified cabs. Poor fitment can suggest amateur repairs or part cannibalization.
- Air Intake and Exhaust Height: Excessively tall stacks may be aftermarket additions, possibly affecting engine airflow.
- Undercarriage Condition: If rails and rollers are worn, expect a full rebuild costing upwards of $10,000.
One technician in Ontario recalled a 955H that had been parked in a field for over a decade. The machine ran, but the undercarriage was so degraded that it couldn’t be moved safely. Another operator in Missouri described a unit with mismatched cab and hood components, likely cobbled together from multiple machines. These stories are common among vintage equipment buyers.
Restoration requires:
- Deep Mechanical Knowledge: Especially of hydraulic systems and diesel engines.
- Access to Parts: Many components are no longer manufactured, requiring salvage or fabrication.
- Budget Flexibility: Initial purchase price is often dwarfed by repair costs.
- Avoid machines with unknown service history unless you have access to parts and skilled labor.
- Prioritize units with intact undercarriages and original cab configurations.
- Use a grease gun to test track adjusters—if they hold pressure, the issue may be minor.
- Verify model identity. Some units may be misidentified due to swapped hoods or decals.
- Always inspect hydraulic lines for cracking or leaks before operation.
- Check for signs of rodent damage in wiring if the machine has been stored outdoors.
- Use caution when testing swing or lift functions—unexpected movement can occur if valves stick.
- If the machine has a ripper, ensure the linkage is intact and not seized.
The CAT 955H remains a symbol of Caterpillar’s golden era, but buying one today is a gamble. While the price may be low, the cost of making it functional can be steep. For collectors or experienced mechanics, it can be a rewarding project. For others, it may be wiser to invest in a newer model with better parts support and safety features. As with any vintage machine, the key is knowing what you're getting—and being prepared for what it might cost to bring it back to life.
