JLG Industries 4x2x2 Scissor Lift Model 33-RTS: Understanding the Key Features and Troubleshooting

[MikePhua]

The JLG 33-RTS is a highly regarded model in the world of aerial work platforms, offering versatility and power in a compact design. As a rough terrain scissor lift, the 33-RTS is often used in construction, industrial maintenance, and other applications where mobility across challenging terrain is required. In this article, we will explore the key features of the 1997 JLG 33-RTS, the common issues that users encounter, and some troubleshooting tips that can help ensure smooth operations.
Key Features of the JLG 33-RTS
The JLG 33-RTS scissor lift is designed to provide a safe, reliable solution for workers who need to reach elevated positions while navigating rough or uneven ground. Some of the defining features of this model include:

• 4x2x2 Drive System: The 33-RTS utilizes a 4-wheel drive (4x2x2) system, which is crucial for its ability to navigate various types of rough terrain. The 4-wheel drive configuration ensures that power is evenly distributed across all wheels, enhancing stability and control on uneven ground.
  
• Rough Terrain Capability: As a rough terrain model, the 33-RTS is equipped with large, all-terrain tires that provide superior traction on surfaces like gravel, dirt, and uneven ground. This feature makes it an ideal choice for outdoor construction sites and landscaping projects.
  
• Hydraulic Lifting System: The lift is powered by a hydraulic system that allows the platform to reach a maximum working height of around 33 feet. This hydraulic lifting mechanism provides smooth, controlled elevation, ensuring operator safety at high altitudes.
  
• Compact Design: Despite its powerful performance, the JLG 33-RTS has a compact design that allows it to maneuver in tight spaces. This makes it a valuable tool for projects where space is limited or the terrain is difficult to navigate.
  
• Platform Size: The platform size on the JLG 33-RTS offers sufficient space for operators to work comfortably at height. The platform can be equipped with various optional features, including extendable decks or additional guardrails, depending on the specific needs of the user.
  

Common Issues and Troubleshooting Tips
While the JLG 33-RTS is a highly durable machine, like any mechanical equipment, it can experience problems over time. Here are some common issues and their potential solutions:
1. Engine Starting Problems
One of the more frequently reported issues with the JLG 33-RTS is difficulty starting the engine. This can often be traced to several causes:

• Battery Issues: If the engine struggles to start or does not start at all, it may be due to a dead or weak battery. It's important to regularly check the battery’s charge and condition. If the battery is old or showing signs of corrosion, it may need to be replaced.
  
• Fuel System: Fuel delivery problems, such as clogged fuel lines or filters, can prevent the engine from starting. Ensure that the fuel tank is full and that the fuel lines are free from blockages. Regularly replace the fuel filters to prevent clogs.
  
• Ignition System: The ignition system, including spark plugs and coils, should be inspected if starting issues persist. Faulty spark plugs or damaged ignition coils may prevent the engine from firing properly.
  

2. Hydraulic System Issues
Another common issue with scissor lifts like the JLG 33-RTS is the malfunction of the hydraulic system, which is critical for raising and lowering the platform.

• Hydraulic Fluid Leaks: Leaks in the hydraulic lines or cylinders can cause the lift to lose pressure and fail to operate correctly. Inspect the hydraulic hoses, fittings, and seals for signs of wear or damage. If a leak is found, replace the affected component as soon as possible.
  
• Low Hydraulic Fluid Levels: Insufficient hydraulic fluid can lead to poor performance, such as slow or erratic movement of the lift. Check the fluid levels regularly and top up the reservoir with the correct type of hydraulic fluid as specified by the manufacturer.
  
• Faulty Hydraulic Pump: The hydraulic pump is responsible for generating pressure in the system. If the pump is malfunctioning, it could result in slow operation or complete failure of the lifting mechanism. A professional inspection is recommended to diagnose and repair a faulty pump.
  

3. Electrical System Failures
The electrical system is responsible for controlling many of the lift’s features, including the drive motor, lifting hydraulics, and safety systems. Here are some electrical issues that can occur:

• Blown Fuses: A common electrical issue is a blown fuse, which can cut power to essential components. If the scissor lift stops working or certain functions cease to operate, check the fuses and replace any that are blown.
  
• Wiring Problems: Over time, wires can wear down due to constant movement or exposure to the elements. Inspect the wiring for signs of wear, corrosion, or loose connections. Repair any faulty wiring or connections to ensure smooth operation.
  
• Control Panel Malfunctions: The control panel on the scissor lift is the operator’s interface for controlling the lift. If the controls are unresponsive or erratic, it may be due to a malfunction in the control panel or the electronic components. Consult the manufacturer’s manual for troubleshooting steps or seek professional assistance.
  

4. Tire Wear and Maintenance
Due to the rough terrain capabilities of the JLG 33-RTS, the tires often face significant wear. Maintaining the tires is essential for ensuring stability and performance:

• Check Tire Pressure: Uneven tire pressure can lead to uneven wear and compromise stability. Regularly check the tire pressure and ensure it is within the recommended range.
  
• Inspect for Damage: Rough terrain can cause damage to the tires, including cuts, punctures, and tears. Inspect the tires frequently and replace any that show signs of significant damage.
  
• Proper Tire Rotation: To ensure even wear, rotate the tires periodically. This is especially important if the machine is frequently used in uneven terrain.
  

Maintenance and Care for the JLG 33-RTS
Proper maintenance is essential to keep the JLG 33-RTS in optimal working condition. Regular service intervals should be followed, including:

• Daily Inspections: Check the engine, hydraulic system, and tires before use. Look for any signs of leaks, unusual sounds, or loose components.
  
• Quarterly Maintenance: Every few months, perform a more thorough inspection. This includes checking the hydraulic fluid levels, inspecting the lift’s structural integrity, and testing the electrical system.
  
• Annual Maintenance: On an annual basis, schedule a professional inspection to ensure all major components are functioning correctly and that the lift is safe to use.
  

Conclusion
The JLG 33-RTS scissor lift is a reliable and efficient machine for working at heights in challenging environments. However, like all heavy equipment, it requires regular maintenance and occasional troubleshooting. By understanding its key features, common issues, and maintenance needs, operators can extend the life of the machine and ensure safe, efficient operations.
Whether you are using it for construction, maintenance, or other applications, keeping the JLG 33-RTS in top condition is essential for maintaining high performance and avoiding costly repairs.