Koehring 566: A Comprehensive Guide to Features, Troubleshooting, and Maintenance

[MikePhua]

The Koehring 566 is a hydraulic crawler crane known for its robust performance in heavy lifting and construction operations. Manufactured by Koehring Company, a well-established name in the equipment industry, the 566 model has been relied upon for a wide range of applications, from material handling to heavy-duty lifting tasks. This article explores the key features of the Koehring 566, common problems, and essential maintenance tips for ensuring the crane’s longevity and performance.
History of Koehring Equipment
Koehring Company was founded in 1907 and quickly became recognized for producing quality construction machinery. In the mid-20th century, the company gained prominence with the introduction of its hydraulic crawler cranes, including models like the 566, which were known for their power, durability, and precision in lifting operations. Over the years, Koehring expanded its product line, making substantial contributions to the heavy equipment industry. Eventually, Koehring was acquired by the Manitowoc Company in the early 1990s, continuing its legacy of innovative crane technology.
The Koehring 566 was part of the company’s long line of hydraulic cranes that catered to contractors, heavy construction companies, and infrastructure developers. Its combination of hydraulic systems and mechanical engineering provided superior lifting capabilities, making it an essential tool in complex construction projects.
Key Features of the Koehring 566
The Koehring 566 was designed with performance and reliability in mind, offering numerous features that made it highly effective for lifting heavy loads in challenging environments.

• Hydraulic System: The crane utilizes a robust hydraulic system that powers the boom and allows for efficient lifting and movement. This system includes advanced controls to ensure smooth operation during heavy lifting tasks.
  
• Lifting Capacity: The Koehring 566 offers an impressive lifting capacity, which can vary based on the configuration of the crane, the counterweights, and the load chart. Typically, it can handle up to 60 tons, making it suitable for large-scale projects.
  
• Crawler Undercarriage: The crawler undercarriage design gives the 566 excellent stability and traction, allowing it to operate on uneven or soft ground. This design minimizes ground pressure, making it suitable for a variety of terrains.
  
• Boom Length and Reach: The crane is equipped with a telescoping boom, allowing it to reach significant heights and extend outwards to lift materials from various angles.
  
• Operator’s Cabin: The crane features a spacious operator’s cabin with ergonomic controls, air conditioning, and a clear view of the load and surrounding environment. This ensures comfort and safety for operators during long working hours.
  

Common Problems with the Koehring 566
While the Koehring 566 is a reliable machine, it is not immune to issues, especially as it ages or undergoes heavy use. Below are some common problems that operators may encounter:

1. Hydraulic Leaks
   Hydraulic leaks are one of the most common issues with older cranes, particularly in the hydraulic hoses, valves, and cylinders. Leaks can lead to a reduction in lifting performance, and in severe cases, complete system failure.
   Possible Causes:
   • Worn-out seals or gaskets
     
   • Cracked or damaged hydraulic hoses
     
   • Loose fittings or connectors
     
   Solution: Regularly inspect hydraulic lines and seals for signs of wear or damage. Replace seals and gaskets as needed, and ensure that hydraulic hoses are properly secured to prevent leaks. Additionally, use high-quality hydraulic fluid that meets manufacturer specifications to prevent damage to components.
   
2. Engine Performance Issues
   The Koehring 566 is powered by a diesel engine, and over time, engine performance may degrade. Common symptoms include difficulty starting, loss of power, or excessive smoke.
   Possible Causes:
   • Clogged fuel filters or air filters
     
   • Low or contaminated fuel
     
   • Worn engine components such as injectors or valves
     
   Solution: Change the fuel and air filters regularly to prevent clogging. Use clean, high-quality fuel to ensure proper engine operation. If the engine continues to exhibit performance issues, a professional inspection of the injectors, valves, and other engine components may be required.
   
3. Electrical System Failures
   The electrical system in older cranes like the 566 can sometimes fail, leading to issues with the ignition, lighting, or control systems.
   Possible Causes:
   • Corroded battery terminals
     
   • Faulty alternator or charging system
     
   • Damaged wiring or connectors
     
   Solution: Inspect the electrical system regularly, checking for loose or corroded battery terminals. Ensure that the alternator and charging system are functioning correctly. If any wires are damaged, replace them immediately to avoid electrical failure during operation.
   
4. Boom and Winch Issues
   The winch and boom systems in the Koehring 566 are subject to high levels of stress, especially during lifting operations. Over time, the cables may wear down, or the winch motor may fail to operate smoothly.
   Possible Causes:
   • Worn winch cables or pulleys
     
   • Hydraulic pump failure
     
   • Incorrect winch alignment
     
   Solution: Regularly check the winch cables for wear and tear, replacing them if they become frayed or damaged. Inspect the hydraulic system powering the winch and ensure that the pump is functioning correctly. Also, check for proper alignment of the winch and boom system to ensure smooth operation.
   

Maintenance Tips for the Koehring 566
Regular maintenance is essential to keep the Koehring 566 in top condition. Here are some maintenance tips for operators:

1. Fluid Changes: Change engine oil and hydraulic fluid at the recommended intervals to maintain smooth operation. Ensure that all fluid levels are checked regularly and top up as necessary.
   
2. Regular Inspections: Perform daily pre-operation checks to identify any potential issues before starting work. Look for signs of wear or leaks in the hydraulic system, engine, and electrical components.
   
3. Cleanliness: Keep the crane clean and free from debris, particularly around the hydraulic lines and engine. This will help prevent the accumulation of dirt and dust, which can cause wear and tear on moving parts.
   
4. Greasing Moving Parts: Regularly grease all moving parts of the crane, including the boom, winch, and undercarriage. This will reduce friction and extend the life of these components.
   
5. Operator Training: Ensure that operators are well-trained and familiar with the machine’s specifications and limitations. Proper use of the crane will reduce the likelihood of damage and increase its lifespan.
   

Conclusion
The Koehring 566 remains a reliable and durable hydraulic crawler crane, trusted for its lifting capabilities and robust performance in construction, heavy lifting, and material handling. However, as with any piece of equipment, it requires regular maintenance and attention to ensure that it operates at peak efficiency. By understanding common issues and implementing the appropriate maintenance procedures, operators can maximize the performance and lifespan of the Koehring 566, ensuring it continues to be a valuable asset on any job site.