Overview of the Bobcat 743 Skid Steer Loader

[MikePhua]

The Bobcat 743 is one of the most iconic skid steer loaders ever produced, and it continues to be a popular choice for construction professionals and operators around the world. With its compact design, high performance, and durability, the Bobcat 743 is suited for a variety of tasks including material handling, digging, and landscaping. In this article, we will dive into the features of the Bobcat 743, discuss common issues and maintenance tips, and explore how it stands out in the competitive skid steer market.
History of the Bobcat 743 Skid Steer Loader
The Bobcat 743 was introduced in the late 1980s and became a staple in the Bobcat lineup. It quickly earned a reputation for reliability and versatility, making it one of the top choices for many industries such as construction, agriculture, and landscaping. Bobcat, a brand owned by Doosan, has long been known for producing durable and efficient equipment, and the 743 is no exception.
The 743’s popularity was driven by its ability to maneuver in tight spaces while offering the power and lift capacity needed for tough jobs. Over the years, Bobcat introduced several improvements, including engine upgrades and enhanced hydraulics. However, the 743 remains a trusted and highly regarded machine in the used equipment market due to its solid build and long-lasting performance.
Specifications of the Bobcat 743
The Bobcat 743 comes equipped with features that allow it to handle a wide range of tasks with ease. Below are some of the key specifications:

• Engine:
  • Model: 4-cylinder diesel engine
    
  • Horsepower: 47-50 hp
    
  • Engine capacity: 1.9L
    
• Operating Capacity:
  • Rated Operating Capacity (ROC): 1,400 lbs (635 kg)
    
  • Lift capacity: 2,800 lbs (1,270 kg)
    
• Dimensions:
  • Length (without bucket): 105.7 inches (2680 mm)
    
  • Width: 61 inches (1550 mm)
    
  • Height: 76.5 inches (1940 mm)
    
  • Wheelbase: 33.7 inches (855 mm)
    
• Hydraulics:
  • Pump flow: 14.7 GPM (55.7 LPM)
    
  • Maximum lift height: 8 feet 2 inches (2490 mm)
    
• Transmission:
  • Hydrostatic drive
    
• Fuel Tank Capacity: 15 gallons (56.8 liters)
  
• Tires: The 743 can be equipped with either pneumatic tires or solid tires depending on the operating conditions.
  

Performance and Versatility
One of the standout features of the Bobcat 743 is its compact size, which makes it ideal for working in tight spaces. Whether it’s a narrow alley, a construction site with limited space, or a landscaping project that requires precision, the Bobcat 743 excels. Its lifting capabilities and ability to travel at a maximum speed of 6.4 mph (10.3 km/h) make it suitable for a range of applications, from loading and unloading materials to digging and grading.
In addition to its compactness, the Bobcat 743 offers versatility with a wide range of attachments. These include bucket loaders, augers, pallet forks, snowplows, and more. The loader’s quick-attach system allows operators to switch between different tools quickly, improving efficiency on the job site.
Common Issues with the Bobcat 743
Like any piece of heavy equipment, the Bobcat 743 may face certain challenges over time, particularly as it accumulates hours of operation. However, with proper maintenance, these issues can be minimized or resolved. Some common issues include:
1. Hydraulic System Issues
The hydraulic system is crucial for the smooth operation of the Bobcat 743, particularly for lifting and controlling attachments. Over time, the hydraulic fluid can degrade, causing slower lift times or weaker performance. Leaks in the hydraulic hoses or cylinders can also occur, reducing efficiency.

• Solution: Regularly inspect the hydraulic system for leaks and change hydraulic fluid at the recommended intervals. Also, check for any wear or damage to hydraulic hoses and cylinders.
  

2. Engine Overheating
Engine overheating is a common issue in older machines, particularly when the radiator or cooling system is not functioning properly. This can lead to decreased engine performance or even damage if not addressed promptly.

• Solution: Ensure the radiator is cleaned and free of debris, and monitor coolant levels. If the engine temperature rises, check for coolant leaks or problems with the thermostat.
  

3. Electrical Issues
The Bobcat 743 can experience electrical problems such as issues with the starter motor, battery, or alternator. These problems can prevent the machine from starting or cause it to lose power during operation.

• Solution: Regularly inspect the battery, clean the terminals, and check for loose wiring. Ensure that the alternator is charging the battery correctly.
  

4. Uneven Tire Wear
Due to the heavy lifting and frequent use of attachments, the Bobcat 743 may experience uneven tire wear, especially if it is constantly used on uneven ground or improperly loaded.

• Solution: Rotate the tires regularly to ensure even wear. Use the correct tire type for the specific job conditions (e.g., solid tires for tougher environments or pneumatic tires for smoother surfaces).
  

Maintenance Tips for the Bobcat 743
To keep your Bobcat 743 in top working condition, regular maintenance is essential. Here are some key maintenance tips:

• Engine Maintenance: Change the engine oil at the recommended intervals and inspect the air filter regularly. Clean or replace the fuel filters as needed.
  
• Hydraulic System: Check the hydraulic fluid regularly, and ensure the system is free from leaks. Replace the hydraulic fluid as per the service intervals.
  
• Tires and Tracks: Regularly inspect the tires for wear and tear, and check the track tension if equipped with tracks. Ensure that the tires are properly inflated to prevent uneven wear.
  
• Cooling System: Clean the radiator and cooling system regularly to avoid overheating.
  
• Battery and Electrical System: Check the battery’s charge and clean the terminals regularly to avoid electrical problems.
  

Conclusion
The Bobcat 743 skid steer loader remains a highly reliable and versatile machine, especially for those who need a compact but powerful machine for construction, landscaping, or material handling tasks. Its combination of performance, maneuverability, and the wide range of attachments it can handle make it an invaluable asset to any job site. By following proper maintenance routines and addressing common issues, the Bobcat 743 can provide years of efficient service. Whether you’re a contractor, landscaper, or equipment owner, the 743 offers a great balance between power and size for many industrial applications.