1986 Grove RT 635 Crane: An Overview and Key Considerations

[MikePhua]

The 1986 Grove RT 635 crane represents a pivotal model in Grove's history, known for its durability, versatility, and reliability in construction and industrial settings. As a rough-terrain crane, the RT 635 was designed to handle tough, off-road conditions while providing the lifting capabilities needed for heavy-duty tasks. This article delves into the specifications, performance, and common issues associated with this crane, offering a comprehensive overview for potential buyers or those considering maintenance or repairs on this classic model.
The Grove RT 635: A Brief History
The Grove RT 635 is part of Grove's line of rough-terrain cranes, which are engineered for use on uneven and unpaved surfaces. Manufactured in the mid-1980s, the RT 635 is one of the company's most iconic models, offering a robust design that balances lifting power and maneuverability. Grove, founded in 1947, quickly became one of the industry's leading manufacturers of mobile cranes. Over the years, the company expanded its offerings to include a wide range of crane models, with the RT 635 being a prominent player in the rough-terrain category.
The rough-terrain crane segment has grown significantly over the decades, with demand rising for equipment capable of working in challenging environments, such as construction sites, oil fields, and mines. The RT 635, designed for these demanding tasks, became a popular choice for its 4-wheel drive and all-terrain capabilities.
Key Features and Specifications of the Grove RT 635
The 1986 Grove RT 635 crane is equipped with a number of features that made it stand out during its production period and still contribute to its durability today. Below are some of the key specifications and components of the RT 635:

1. Lifting Capacity:
   The RT 635 has a lifting capacity of around 35 tons, which made it well-suited for handling heavy loads on rough and uneven terrain. The crane can be used for a variety of tasks, from lifting construction materials to hoisting machinery in industrial settings.
   
2. Boom Length:
   The RT 635 is equipped with a hydraulically adjustable boom that offers an impressive reach. The boom's maximum length is approximately 100 feet, making it versatile for a range of lifting tasks, both in terms of height and horizontal reach.
   
3. Engine Power:
   Powered by a diesel engine, the RT 635 was designed to deliver consistent power for rough-terrain applications. The engine is paired with a transmission system capable of handling tough ground conditions while maintaining fuel efficiency.
   
4. Hydraulic System:
   The crane's hydraulic system is central to its performance, providing smooth control over boom movements, load positioning, and lifting capacity. The RT 635 is equipped with a powerful hydraulic pump and a well-designed control system that allows operators to perform precise operations.
   
5. Chassis and Tires:
   The RT 635 features heavy-duty tires and a rugged chassis designed to withstand harsh conditions. The tires are specifically designed to offer traction on rough terrain, allowing the crane to operate in a variety of environments, including muddy, rocky, and uneven surfaces.
   
6. Cab and Controls:
   The operator's cabin in the RT 635 is spacious, designed for comfort and visibility. The controls are ergonomically positioned for easy access, allowing operators to maintain full control over the crane during operation. The cabin is equipped with safety features, such as roll-over protection and enhanced visibility for optimal safety.
   

Common Issues and Considerations for the Grove RT 635
Like any piece of heavy equipment, the Grove RT 635 is subject to wear and tear over time, especially when it’s used extensively in harsh conditions. While the RT 635 is known for its durability, there are a few common issues that operators and maintenance teams should be aware of:

1. Hydraulic System Leaks:
   Hydraulic system issues are one of the most common problems encountered with older cranes like the RT 635. Over time, seals and hoses can degrade, leading to hydraulic fluid leaks. Regular inspection and maintenance of the hydraulic lines and connections are essential to prevent fluid loss, which can compromise crane performance and safety.
   
2. Engine Performance:
   The diesel engine, while known for its reliability, can develop issues over time, especially if not properly maintained. Common problems include fuel system clogging, wear on engine components, or issues with starting the engine in colder climates. Regular engine checks and maintenance are critical to ensuring the crane continues to perform optimally.
   
3. Boom and Structural Wear:
   The boom is subject to heavy loads and stress during operations. Over time, this can lead to structural wear, including cracks or bends in the boom. Regular inspections of the boom and related components, such as the winch and lifting components, are necessary to detect any signs of wear and prevent failures.
   
4. Tire Wear and Traction Issues:
   Due to the rough-terrain nature of the RT 635, the tires can experience significant wear, especially when operating on rocky or uneven surfaces. Replacing worn-out tires is essential to maintain proper traction and ensure that the crane can move safely across rough terrain.
   
5. Electrical Problems:
   As with many older models, electrical issues can arise due to the age of the wiring and electrical components. Problems such as faulty switches, damaged wires, or malfunctioning sensors can occur, leading to operational challenges. It's important to address electrical issues promptly to avoid further complications.
   

Maintenance Tips for Extending the Life of the Grove RT 635
Proper maintenance is key to extending the life of the Grove RT 635 crane and ensuring its reliable operation. Here are some essential maintenance tips:

1. Regular Inspections:
   Conducting thorough, periodic inspections of the crane’s critical components—such as the boom, tires, engine, hydraulic system, and chassis—can help identify issues before they become serious problems. Inspections should be done after every major job or every 100 hours of operation, whichever comes first.
   
2. Hydraulic Fluid and Filter Changes:
   Regularly changing the hydraulic fluid and replacing filters is essential to prevent damage to the hydraulic system. Contaminants in the fluid can cause wear on hydraulic pumps and valves, which can lead to costly repairs.
   
3. Tire Maintenance:
   Tire wear should be checked regularly, especially if the crane is operating in extremely rough conditions. If a tire is found to be worn or damaged, it should be replaced immediately to avoid performance issues. Additionally, maintaining the proper tire pressure is crucial to ensuring proper traction and load-bearing capacity.
   
4. Engine Maintenance:
   Perform routine checks on the engine to ensure that it’s running smoothly. This includes checking oil levels, changing the oil at recommended intervals, and inspecting the fuel system. A well-maintained engine is essential for maintaining the crane's overall performance and reliability.
   
5. Boom and Structural Integrity:
   Regularly inspect the boom and all related lifting components for signs of wear, corrosion, or structural issues. Any cracks or damage should be repaired immediately to prevent further damage to the crane and to ensure operator safety.
   

Conclusion
The 1986 Grove RT 635 crane continues to be a reliable and valuable piece of equipment for rough-terrain applications. While it may be an older model, its robust design and impressive lifting capacity still make it a popular choice for construction and industrial work. By understanding the common issues and performing regular maintenance, operators and fleet owners can ensure the longevity and reliability of the RT 635, keeping it in good working condition for many years to come.