08-01-2025, 07:12 PM
The Caterpillar 955 is one of the most iconic crawler loaders ever built by CAT, and it has earned its place in history as a workhorse in construction and excavation projects. Though no longer in production, the 955 still commands a degree of respect in the world of heavy equipment, particularly among collectors and those operating older machinery. In this article, we’ll explore the history, features, and common issues of the CAT 955, while offering advice on maintenance, troubleshooting, and parts replacement.
The History of the CAT 955 Crawler Loader
The CAT 955 crawler loader was first introduced in the late 1950s and became one of the most popular pieces of equipment in the industry for decades. It was originally built to combine the functions of a bulldozer and a wheel loader into a single, versatile machine that could handle digging, lifting, and grading tasks with ease.
This crawler loader was designed for smaller to medium-sized construction projects, where flexibility and maneuverability were essential. Its compact size and powerful hydraulics made it a preferred choice for tasks such as digging, grading, and material handling in tight spaces.
Over the years, the CAT 955 went through several iterations, with enhancements to its engine, hydraulics, and control systems, making it a valuable asset to construction crews and operators who needed a reliable machine in demanding conditions.
Key Features of the CAT 955
The CAT 955 was known for its durability and versatility. Here are some of the key features that made it stand out in its class:
1. Engine Power and Performance
The CAT 955 was powered by a diesel engine, typically the Caterpillar D334, which was known for its power and efficiency. The engine produced a solid output of approximately 140 horsepower, allowing the loader to handle a variety of tasks, including digging, lifting, and pushing materials.
With its ability to perform multiple functions, the 955 was particularly valuable for contractors working in small to medium-sized construction projects, where versatility and power were crucial.
2. Crawler Undercarriage
One of the defining characteristics of the 955 was its crawler undercarriage, which provided excellent traction and stability on rough and uneven terrain. The steel tracks distributed the weight of the machine evenly, allowing it to operate in areas where wheeled machines might struggle.
This design made the 955 ideal for use on job sites with soft ground, steep inclines, and muddy or rocky terrain, where stability and low ground pressure were essential to prevent the machine from getting stuck.
3. Hydraulic System
The CAT 955 featured a powerful hydraulic system that powered its loader arm and other attachments. The hydraulics were essential for controlling the bucket and were designed to be both powerful and responsive, allowing operators to perform tasks like digging, loading, and grading with precision. The system was built for durability, and the machine’s performance in demanding environments was a testament to the strength of the hydraulic components.
4. Versatility of Attachments
The 955 was designed to handle various attachments, such as buckets, forks, and other specialized tools. This flexibility allowed operators to use the same machine for a wide range of tasks, from digging to material handling. The ability to switch attachments quickly made the 955 a favorite among operators who needed a machine that could adapt to changing job site requirements.
5. Operator Comfort and Control
For its time, the CAT 955 was equipped with an operator’s cab that provided a reasonable level of comfort. Though by modern standards, the cab may seem basic, it provided protection from the elements and allowed the operator to have good visibility and control over the machine’s functions. The controls were straightforward, with a combination of levers and pedals that allowed for precise operation of the machine’s functions.
Common Issues with the CAT 955
While the CAT 955 is a reliable machine, it is not without its challenges. Many of these issues stem from the age of the machine, as most 955 loaders are now several decades old. Here are some of the most common problems faced by operators and mechanics working with the 955:
1. Hydraulic System Leaks
Hydraulic system leaks are one of the most common issues with older CAT 955 models. Over time, seals and hoses can degrade, causing the hydraulic system to lose pressure and functionality. This issue can lead to reduced performance in the loader’s arms and bucket, which makes digging and lifting more difficult.
Solution: Regularly inspect the hydraulic lines, hoses, and seals for wear. Replacing old or cracked hoses and seals can prevent further leakage and restore the machine’s hydraulic efficiency.
2. Engine Overheating
The engine in the CAT 955 is a workhorse, but like any older engine, it can suffer from overheating issues due to coolant leaks, blocked radiators, or a malfunctioning thermostat. Overheating can cause significant damage to the engine, resulting in costly repairs and downtime.
Solution: Regularly check the radiator and coolant levels. Cleaning the radiator fins and ensuring the thermostat is working properly can help prevent overheating issues.
3. Wear on Tracks and Undercarriage
The tracks and undercarriage on the CAT 955 are built to last, but over time, they can wear out, especially if the machine has been used heavily on rough or abrasive terrain. Track wear can lead to reduced traction and efficiency, as well as an increased risk of damage to other components.
Solution: Regularly inspect the tracks for signs of wear, such as cracks or missing links. If the tracks are excessively worn, it may be necessary to replace them to maintain proper traction and performance.
4. Electrical Issues
Like many older machines, the CAT 955 can suffer from electrical problems, including issues with the battery, alternator, or wiring. These electrical issues can cause the machine to fail to start or exhibit erratic behavior during operation.
Solution: Perform routine checks of the electrical system, including the battery, alternator, and wiring. Replacing old batteries or corroded wiring can help prevent electrical issues and ensure reliable operation.
Maintenance Tips for Extending the Life of Your CAT 955
To keep the CAT 955 running smoothly and extend its operational life, regular maintenance is essential. Here are some key maintenance tips:
1. Keep the Hydraulic System in Good Condition
The CAT 955 crawler loader may be an older model, but its legacy endures in the construction and heavy equipment world. Built to last and capable of handling a wide range of tasks, it remains a valuable machine for those who appreciate its reliability and versatility. While it does present some challenges, especially as it ages, regular maintenance and attention to key components can ensure that this classic machine continues to perform for years to come.
For those operating a CAT 955, whether in a current work environment or as part of a collection, it’s important to understand the history, features, and common issues associated with the machine. By investing in regular maintenance and being proactive about repairs, operators can continue to get great value out of this iconic piece of Caterpillar equipment.
The History of the CAT 955 Crawler Loader
The CAT 955 crawler loader was first introduced in the late 1950s and became one of the most popular pieces of equipment in the industry for decades. It was originally built to combine the functions of a bulldozer and a wheel loader into a single, versatile machine that could handle digging, lifting, and grading tasks with ease.
This crawler loader was designed for smaller to medium-sized construction projects, where flexibility and maneuverability were essential. Its compact size and powerful hydraulics made it a preferred choice for tasks such as digging, grading, and material handling in tight spaces.
Over the years, the CAT 955 went through several iterations, with enhancements to its engine, hydraulics, and control systems, making it a valuable asset to construction crews and operators who needed a reliable machine in demanding conditions.
Key Features of the CAT 955
The CAT 955 was known for its durability and versatility. Here are some of the key features that made it stand out in its class:
1. Engine Power and Performance
The CAT 955 was powered by a diesel engine, typically the Caterpillar D334, which was known for its power and efficiency. The engine produced a solid output of approximately 140 horsepower, allowing the loader to handle a variety of tasks, including digging, lifting, and pushing materials.
With its ability to perform multiple functions, the 955 was particularly valuable for contractors working in small to medium-sized construction projects, where versatility and power were crucial.
2. Crawler Undercarriage
One of the defining characteristics of the 955 was its crawler undercarriage, which provided excellent traction and stability on rough and uneven terrain. The steel tracks distributed the weight of the machine evenly, allowing it to operate in areas where wheeled machines might struggle.
This design made the 955 ideal for use on job sites with soft ground, steep inclines, and muddy or rocky terrain, where stability and low ground pressure were essential to prevent the machine from getting stuck.
3. Hydraulic System
The CAT 955 featured a powerful hydraulic system that powered its loader arm and other attachments. The hydraulics were essential for controlling the bucket and were designed to be both powerful and responsive, allowing operators to perform tasks like digging, loading, and grading with precision. The system was built for durability, and the machine’s performance in demanding environments was a testament to the strength of the hydraulic components.
4. Versatility of Attachments
The 955 was designed to handle various attachments, such as buckets, forks, and other specialized tools. This flexibility allowed operators to use the same machine for a wide range of tasks, from digging to material handling. The ability to switch attachments quickly made the 955 a favorite among operators who needed a machine that could adapt to changing job site requirements.
5. Operator Comfort and Control
For its time, the CAT 955 was equipped with an operator’s cab that provided a reasonable level of comfort. Though by modern standards, the cab may seem basic, it provided protection from the elements and allowed the operator to have good visibility and control over the machine’s functions. The controls were straightforward, with a combination of levers and pedals that allowed for precise operation of the machine’s functions.
Common Issues with the CAT 955
While the CAT 955 is a reliable machine, it is not without its challenges. Many of these issues stem from the age of the machine, as most 955 loaders are now several decades old. Here are some of the most common problems faced by operators and mechanics working with the 955:
1. Hydraulic System Leaks
Hydraulic system leaks are one of the most common issues with older CAT 955 models. Over time, seals and hoses can degrade, causing the hydraulic system to lose pressure and functionality. This issue can lead to reduced performance in the loader’s arms and bucket, which makes digging and lifting more difficult.
Solution: Regularly inspect the hydraulic lines, hoses, and seals for wear. Replacing old or cracked hoses and seals can prevent further leakage and restore the machine’s hydraulic efficiency.
2. Engine Overheating
The engine in the CAT 955 is a workhorse, but like any older engine, it can suffer from overheating issues due to coolant leaks, blocked radiators, or a malfunctioning thermostat. Overheating can cause significant damage to the engine, resulting in costly repairs and downtime.
Solution: Regularly check the radiator and coolant levels. Cleaning the radiator fins and ensuring the thermostat is working properly can help prevent overheating issues.
3. Wear on Tracks and Undercarriage
The tracks and undercarriage on the CAT 955 are built to last, but over time, they can wear out, especially if the machine has been used heavily on rough or abrasive terrain. Track wear can lead to reduced traction and efficiency, as well as an increased risk of damage to other components.
Solution: Regularly inspect the tracks for signs of wear, such as cracks or missing links. If the tracks are excessively worn, it may be necessary to replace them to maintain proper traction and performance.
4. Electrical Issues
Like many older machines, the CAT 955 can suffer from electrical problems, including issues with the battery, alternator, or wiring. These electrical issues can cause the machine to fail to start or exhibit erratic behavior during operation.
Solution: Perform routine checks of the electrical system, including the battery, alternator, and wiring. Replacing old batteries or corroded wiring can help prevent electrical issues and ensure reliable operation.
Maintenance Tips for Extending the Life of Your CAT 955
To keep the CAT 955 running smoothly and extend its operational life, regular maintenance is essential. Here are some key maintenance tips:
1. Keep the Hydraulic System in Good Condition
- Check for leaks regularly and replace any worn hoses or seals.
- Maintain proper hydraulic fluid levels and use the recommended type of fluid for the system.
- Change the engine oil and filters regularly to ensure smooth operation.
- Check for signs of overheating and address any issues promptly to avoid engine damage.
- Regularly inspect the tracks for signs of wear and replace them when necessary.
- Clean the undercarriage to prevent the buildup of dirt and debris that can cause premature wear.
- Inspect the battery, alternator, and wiring regularly for any signs of damage or corrosion.
- Clean electrical connections to prevent poor performance or electrical failure.
The CAT 955 crawler loader may be an older model, but its legacy endures in the construction and heavy equipment world. Built to last and capable of handling a wide range of tasks, it remains a valuable machine for those who appreciate its reliability and versatility. While it does present some challenges, especially as it ages, regular maintenance and attention to key components can ensure that this classic machine continues to perform for years to come.
For those operating a CAT 955, whether in a current work environment or as part of a collection, it’s important to understand the history, features, and common issues associated with the machine. By investing in regular maintenance and being proactive about repairs, operators can continue to get great value out of this iconic piece of Caterpillar equipment.
