CAT 226D Dual Auto Leveling Adjust: A Step-by-Step Guide

[MikePhua]

The CAT 226D skid steer loader is equipped with an advanced dual auto-leveling system that ensures the loader arms remain level during lifting. This feature helps operators maintain a consistent load position, making it easier to operate attachments like buckets or forks. However, over time, adjustments may be needed to maintain the system’s accuracy. This guide walks you through the process of adjusting the dual auto-leveling system on a CAT 226D to ensure optimal performance.
What is Dual Auto-Leveling?
Dual auto-leveling is a hydraulic system feature found on many modern CAT skid steers, including the 226D. This system automatically adjusts the loader arms to keep them level as they raise and lower. The benefit of this feature is that it helps prevent the bucket or attachment from tilting, improving load handling and providing a smoother, more controlled operation. The system can also reduce wear on the lift cylinders and other hydraulic components by ensuring even force distribution.
Signs That Adjustments Are Needed

1. Uneven Bucket Position:
   If the bucket or attachment is not staying level during operation, it may indicate that the auto-leveling system needs adjustment. An uneven position can lead to inefficient load handling and unnecessary wear.
   
2. Reduced Lifting Capacity:
   A malfunctioning auto-leveling system can also affect the machine's lifting capacity. If the loader arms are not leveling correctly, the machine may struggle to lift heavy loads or perform tasks that require precise control.
   
3. Hydraulic Drifts:
   If the loader arms drift or move slightly after being set in a specific position, it may signal an issue with the auto-leveling system that requires calibration.
   

How to Adjust the Dual Auto-Leveling System on the CAT 226D
Before beginning any adjustments, ensure the skid steer is safely parked, the engine is off, and the hydraulic system is not under pressure.

1. Locate the Adjustment Points:
   On the CAT 226D, the adjustment points for the dual auto-leveling system are typically located on the hydraulic cylinders that control the loader arms. These points are often marked for easy identification. Refer to the operator’s manual for exact locations.
   
2. Adjust the Load Check Valves:
   The load check valves are responsible for maintaining hydraulic pressure in the system to keep the loader arms in a level position. If the loader arms are not staying level, it’s often necessary to adjust these valves. Use a wrench to turn the adjustment screws on the load check valves. Turn them clockwise to increase pressure or counterclockwise to decrease it. Make small adjustments and test the system after each change.
   
3. Calibrate the Auto-Leveling System:
   Some models, including the CAT 226D, may require a recalibration of the auto-leveling system. To do this, start the machine and raise the loader arms to their maximum height. Once at the top, hold the control lever in the raise position for a few seconds to reset the system. Lower the loader arms and check if they stay level throughout the movement. If they don’t, repeat the calibration steps or further adjust the load check valves.
   
4. Check the Loader Arm Position:
   Once the system has been adjusted or recalibrated, raise and lower the loader arms while observing their movement. The loader arms should remain level throughout the entire lift cycle. If the arms still appear unbalanced, continue fine-tuning the system or inspect for potential leaks or faulty components.
   
5. Inspect for Leaks or Wear:
   If adjustments do not resolve the issue, inspect the hydraulic hoses and connections for any signs of leaks or wear. Hydraulic fluid loss can affect the operation of the auto-leveling system, leading to inconsistent loader arm positioning.
   
6. Test the System Under Load:
   After making the adjustments, test the system under a light load to ensure it performs as expected. Pay attention to how the loader arms behave with different attachments, such as buckets or forks. The arms should maintain their level position regardless of the weight being lifted.
   

Maintenance Tips for the Dual Auto-Leveling System

1. Regularly Check Hydraulic Fluid Levels:
   Ensure that the hydraulic fluid levels are maintained at the proper level. Low hydraulic fluid can cause erratic operation of the loader arms and may lead to malfunctioning of the auto-leveling system.
   
2. Inspect Hydraulic Hoses and Fittings:
   Periodically check the hydraulic hoses, fittings, and seals for wear, cracks, or leaks. These can affect the performance of the entire hydraulic system, including the auto-leveling mechanism.
   
3. Lubricate Moving Parts:
   Keep all moving parts, including the loader arms and hydraulic cylinders, properly lubricated. Lubrication helps reduce friction and prevents excessive wear, ensuring smooth operation of the loader arms.
   
4. Check for System Calibration Regularly:
   Over time, the auto-leveling system may drift or become misaligned. Periodic calibration checks ensure that the system continues to function as intended, maintaining the loader arms in the correct position during operation.
   

Conclusion
The CAT 226D’s dual auto-leveling system is a crucial feature for enhancing the efficiency and precision of the machine’s lifting capabilities. If you notice issues with the loader arms not staying level, follow the steps outlined in this guide to adjust and calibrate the system. Regular maintenance and adjustments will ensure the auto-leveling feature remains accurate, helping you get the most out of your CAT 226D skid steer loader.