Bobcat 773: A Comprehensive Guide to the Iconic Skid Steer Loader

[MikePhua]

The Bobcat 773 is one of the most recognized skid steer loaders in the construction and landscaping industry. Known for its power, versatility, and durability, this model has been widely used for a variety of applications ranging from digging and lifting to material handling and demolition. In this article, we will explore the key features of the Bobcat 773, common issues faced by operators, maintenance tips, and real-world examples of how this machine excels on job sites.
Overview of the Bobcat 773 Skid Steer Loader
The Bobcat 773 is part of Bobcat’s line of skid steer loaders, designed to provide both performance and ease of use in a compact and maneuverable package. Its rugged design and powerful engine make it well-suited for demanding work environments, while its small size allows for operation in tight spaces where larger machines cannot reach.
Key Terminology:

• Skid Steer Loader: A small, engine-powered machine with lift arms used to attach various tools or buckets, capable of operating in tight spaces. "Skid steer" refers to the unique method of steering by making one side of the machine move faster than the other.
  
• Hydraulics: A system that uses pressurized fluid to power the lift arms and attachments on the skid steer loader.
  
• Auxiliary Hydraulics: A feature that allows the machine to power additional attachments such as augers, breakers, or grapples through hydraulic power.
  

Key Features of the Bobcat 773
The Bobcat 773, released in the late 1990s, has become an industry standard due to its reliability and high performance. Below are the main features that set it apart:

1. Powerful Engine:
   • The Bobcat 773 is equipped with a 49-horsepower diesel engine, providing ample power for a variety of tasks. The engine’s strength allows the loader to handle heavy-duty lifting and digging tasks efficiently.
     
2. Hydraulic System:
   • With a powerful hydraulic system, the Bobcat 773 can lift up to 2,500 lbs (1,134 kg) and features impressive lifting height and reach. The hydraulics are also designed to power a wide range of attachments, increasing the versatility of the machine.
     
3. Compact Size:
   • One of the standout features of the 773 is its compact size. It is easy to maneuver in tight spaces, making it ideal for jobs on crowded construction sites, landscaping tasks, and urban environments where space is limited.
     
4. Versatility with Attachments:
   • The Bobcat 773 is compatible with various attachments, including buckets, snow plows, augers, and hydraulic breakers. This versatility allows operators to switch tools quickly and efficiently, increasing productivity on the job site.
     
5. Operator Comfort:
   • The cab of the 773 is designed for operator comfort, with easy-to-reach controls, a well-cushioned seat, and good visibility. This improves operator productivity and reduces fatigue during long hours of operation.
     
6. All-Wheel Drive and Four-Corner Suspension:
   • The 773 is an all-wheel drive machine, ensuring great traction and stability on uneven or slippery surfaces. Its four-corner suspension system provides smooth operation, reducing wear on the machine and offering a more comfortable ride for the operator.
     

Applications of the Bobcat 773
The Bobcat 773 is used in a wide range of industries and applications, including:

1. Construction:
   • The 773 is frequently used on construction sites for tasks such as excavation, grading, material handling, and lifting. Its compact size allows it to maneuver in small areas, while its lifting power makes it ideal for moving heavy materials.
     
2. Landscaping:
   • Landscaping crews rely on the Bobcat 773 for digging trenches, moving soil, and performing other tasks that require both precision and strength. It is also used for clearing debris and performing general yard maintenance.
     
3. Demolition:
   • The 773’s powerful hydraulics and lifting capacity make it an excellent choice for demolition tasks. It can be equipped with various attachments, such as hydraulic hammers or shears, to break down structures.
     
4. Agriculture:
   • In agricultural settings, the 773 can be used for lifting feed, moving hay bales, or clearing land. Its ability to work in tight spaces makes it an invaluable tool for farmers with smaller operations.
     

Common Issues with the Bobcat 773
Despite its durability and high performance, like all machinery, the Bobcat 773 can experience some issues over time. Some of the most common problems faced by owners and operators include:

1. Hydraulic System Leaks:
   • The Bobcat 773’s hydraulic system is an essential component for lifting and powering attachments. Leaks in the hydraulic hoses, fittings, or cylinders can cause loss of power and performance. Regular inspection of the hydraulic system can help detect leaks early.
     
2. Engine Starting Problems:
   • If the Bobcat 773 has trouble starting, the issue could stem from a faulty battery, alternator, or starter motor. These components should be checked and replaced if necessary to avoid starting issues.
     
3. Overheating:
   • The engine of the Bobcat 773 may overheat if the radiator or cooling system becomes clogged with debris. Regular cleaning and maintenance of the cooling system can help prevent overheating, especially in hot conditions or after heavy use.
     
4. Tire Wear and Damage:
   • The 773’s tires are subjected to heavy stress during operation, especially when working on uneven terrain. Inspecting tires for wear and tear is essential to avoid issues like flat tires or reduced traction.
     
5. Joystick and Control Problems:
   • Some operators report issues with the joysticks or controls becoming unresponsive or sticking. This could be caused by hydraulic pressure problems, wear and tear on the control linkage, or dirt and debris buildup in the control systems.
     

Maintenance Tips for the Bobcat 773
To keep your Bobcat 773 running smoothly and extend its lifespan, regular maintenance is key. Here are some maintenance tips to ensure optimal performance:

1. Check Hydraulic Fluid:
   • Regularly check the hydraulic fluid levels and quality. Clean or replace the fluid if it appears dirty or contaminated, and inspect hoses and fittings for leaks.
     
2. Change Engine Oil and Filters:
   • The engine oil and filters should be changed at regular intervals as outlined in the operator's manual. This helps ensure that the engine operates at peak efficiency and avoids long-term damage.
     
3. Inspect Tires Regularly:
   • Check tire pressure regularly and inspect for damage such as cuts, punctures, or excessive wear. Proper tire maintenance is crucial for maintaining traction and preventing costly tire replacements.
     
4. Clean the Radiator:
   • The radiator should be cleaned regularly to prevent overheating. Debris such as dirt and grass can block airflow, so keep the radiator clean, especially during heavy use.
     
5. Monitor Electrical Components:
   • Ensure that the battery and electrical connections are secure and free of corrosion. A weak battery or faulty wiring can lead to starting issues or intermittent electrical problems.
     
6. Lubricate Moving Parts:
   • Lubricate the moving parts of the Bobcat 773, including the arms, buckets, and control linkages. Regular lubrication reduces wear and ensures smooth operation.
     

Real-World Example: Bobcat 773 in Action
On a recent urban construction project, the Bobcat 773 played a key role in excavation and material handling. The construction site was constrained by space, with narrow passageways and limited room for maneuvering. The compact size of the 773 allowed the crew to move large quantities of debris and materials through tight areas that would have been inaccessible to larger machines. The powerful hydraulic system also enabled the team to use a variety of attachments, including a bucket and hydraulic breaker, to efficiently break through concrete and move rubble. Regular maintenance of the hydraulic and engine systems ensured that the Bobcat 773 performed without fail throughout the project.
Conclusion
The Bobcat 773 is a powerful and reliable skid steer loader that has earned a reputation for its versatility and durability in demanding work environments. Whether used for construction, landscaping, demolition, or agriculture, it provides the strength and maneuverability needed to complete a wide range of tasks efficiently. Regular maintenance and attention to common issues like hydraulic leaks, engine starting problems, and tire wear are essential to keeping the machine in peak condition. By following proper maintenance guidelines, operators can ensure that the Bobcat 773 continues to deliver exceptional performance on job sites for years to come.