Pattern Change on a Case CX160B Excavator

[MikePhua]

Excavators are integral machines in many construction, mining, and demolition projects. The Case CX160B, a popular mid-sized model, is known for its robust performance and versatility. One of the features that sets this excavator apart is its ability to change the operating pattern, which allows operators to switch between different control schemes for more personalized or efficient handling. This feature is particularly useful for operators transitioning between different machine types or those who have preferences based on experience.
In this article, we’ll delve into how to change the pattern on a Case CX160B, the importance of control pattern changes, and the possible issues you may face when attempting this modification.
Understanding Control Patterns on Excavators
Before diving into how to change the control pattern, it’s essential to understand what control patterns are and why they matter.
Excavators generally operate using two main types of control patterns:

• ISO Pattern: The ISO pattern is the most commonly used control pattern worldwide. In this setup, the left joystick controls the boom (up/down) and arm (in/out), while the right joystick controls the swing (left/right) and the bucket (curling/opening).
  
• SAE Pattern: The SAE pattern, primarily used in the United States, reverses the functionality of the joysticks compared to the ISO pattern. In this setup, the left joystick controls the swing and bucket, while the right joystick operates the boom and arm.
  

This distinction is crucial because many operators prefer one pattern over the other based on their prior experience or specific job requirements. The ability to switch patterns is a feature that improves versatility, allowing operators to adjust to the machine without having to re-learn the controls.
How to Change the Control Pattern on a Case CX160B
On the Case CX160B, the process of switching the control pattern is straightforward but varies slightly based on the year and model variant. The pattern change mechanism is typically mechanical, and the excavator has a built-in feature that allows easy switching without the need for specialized tools.
Steps to Change the Control Pattern:

1. Locate the Pattern Change Lever: The pattern change lever is typically located near the operator’s seat, either on the floor or just beside the armrest. It may be a toggle or a mechanical lever that allows you to change between the two patterns.
   
2. Activate the Pattern Change Mechanism: To change patterns, pull or push the lever depending on the current configuration of the excavator. When this lever is engaged, it adjusts the hydraulic control valves within the excavator, switching the joystick functions between ISO and SAE.
   
3. Test the Joysticks: After switching the pattern, test the joysticks to ensure the control functions match the new pattern. Ensure the boom, arm, bucket, and swing controls are all operating as expected.
   
4. Secure the Lever: Once you’ve confirmed that the pattern change has been successfully completed, make sure the lever is securely in place to avoid accidental switching during operation.
   
5. Calibrate the Controls: If your machine has a digital interface or screen, it may prompt you to calibrate or confirm the pattern change. Follow the instructions on the screen to finalize the pattern change process.
   

It’s important to note that while this process is simple, some models may require specific instructions based on the machine’s configuration. Always refer to the operator’s manual for precise guidance.
Why Change the Control Pattern?
Changing the control pattern is often necessary for a variety of reasons:

• Operator Preference: Some operators may have a long history with either the ISO or SAE pattern and find it more comfortable to work with. By being able to change the pattern, the machine can better cater to the operator's skillset and preferences.
  
• Multi-Machine Operators: For operators who work with multiple machines, having the option to change patterns allows them to seamlessly transition between different excavators or other heavy equipment without needing to adjust their control habits. This is particularly useful in large fleets where different machines may be set to different control patterns.
  
• Efficiency: The flexibility to switch patterns can improve operational efficiency. If one pattern allows for more precise control on certain tasks (such as digging, lifting, or trenching), switching to that pattern can optimize the work being done.
  
• Specialization: Some tasks or terrains may benefit from a specific pattern. For example, working in confined spaces or with specialized attachments may be easier with one control pattern over another. The ability to change patterns gives operators the flexibility to choose the best option for the task at hand.
  

Troubleshooting Pattern Change Issues
Though changing the control pattern on a Case CX160B is usually a smooth process, there can occasionally be issues that prevent a successful change or make the controls feel unresponsive. Here are some common problems and potential solutions:
1. Pattern Change Lever Not Engaging
If the pattern change lever does not engage or switch between patterns smoothly, the problem may lie in a worn or damaged lever mechanism. In this case, you may need to:

• Inspect the Lever Mechanism: Check for any visible damage or debris around the lever. Over time, dirt or corrosion may accumulate around the lever, preventing smooth movement.
  
• Lubricate the Mechanism: If the lever is sticky or difficult to move, apply lubricant to ensure smooth motion.
  
• Check for Obstructions: Ensure that there are no obstructions blocking the lever’s movement or the mechanism’s functionality.
  

2. Hydraulic Controls Not Responding
If the hydraulic system doesn’t respond correctly after a pattern change, the issue could be related to the hydraulic valve configuration. Some potential solutions include:

• Check Hydraulic Fluid Levels: Low hydraulic fluid levels can lead to unresponsive controls. Ensure the fluid is at the proper level and top it up if necessary.
  
• Examine the Solenoids and Valves: The solenoids and control valves may be malfunctioning, affecting the pattern change function. Have these components inspected and serviced by a certified technician if needed.
  

3. Inconsistent Pattern Behavior
In some cases, the control pattern might appear to switch, but one or more joystick controls behave unpredictably. This may indicate:

• Faulty Pattern Control Switch: The switch that triggers the pattern change mechanism could be malfunctioning. This requires testing and possibly replacing the faulty switch.
  
• Calibration Issues: After switching patterns, the machine may require recalibration of its joystick functions. Follow the manual’s instructions for recalibration to restore full control.
  

Conclusion: Understanding the Importance of Control Pattern Changes
The ability to change the control pattern on a Case CX160B excavator provides a significant advantage in terms of flexibility and operator comfort. By following the proper procedure to change the pattern and troubleshooting potential issues, you can optimize your machine’s performance and increase overall productivity.
Operators should always be aware of the machine’s control pattern options and utilize them based on the job requirements or personal preference. This feature is just one of many that makes modern excavators more adaptable to diverse tasks and environments, ultimately ensuring that operators can work efficiently, safely, and comfortably.
If you're facing persistent issues with your pattern change feature, it's always advisable to consult the machine's operator manual or seek professional help to avoid any long-term damage to the equipment.