CAT 226 Auxiliary Hydraulics Slow: Troubleshooting and Solutions

[MikePhua]

The CAT 226 skid steer experienced slow auxiliary hydraulics. When attempting to use attachments, the hydraulic system was underperforming, with the flow of hydraulic fluid being noticeably sluggish. This issue not only affected the performance of the attachments but also made operating the machine more difficult.
Possible Causes
Several factors could cause slow auxiliary hydraulics on the CAT 226. Some of the most common causes include:

1. Low Hydraulic Fluid Level: One of the first things to check is whether the hydraulic fluid is at the correct level. Low fluid levels can reduce hydraulic pressure and flow, leading to poor performance.
   
2. Dirty Hydraulic Filters: Clogged or dirty hydraulic filters can restrict fluid flow, causing slow operation of the auxiliary hydraulics. Over time, filters can accumulate dirt and debris, which impede the fluid’s movement.
   
3. Faulty Auxiliary Hydraulic Pump: If the hydraulic pump is not functioning properly, it can cause reduced flow. This issue may require the replacement of the pump.
   
4. Hydraulic Leaks: Leaks in the hydraulic system can also cause slow hydraulics. A small leak might not be noticeable but can result in a loss of pressure, affecting the performance of the system.
   
5. Faulty Solenoid or Valve: The solenoid or control valve responsible for directing hydraulic fluid to the auxiliary circuit might be malfunctioning, leading to slower than expected operation.
   

Steps for Troubleshooting

1. Check Hydraulic Fluid Level: Inspect the hydraulic fluid and top it off if necessary. Make sure to use the correct type of fluid as specified in the operator’s manual.
   
2. Inspect and Replace Filters: Remove and clean or replace the hydraulic filters if they appear dirty. This simple step can restore the system’s flow rate.
   
3. Examine for Leaks: Inspect the entire hydraulic system for any visible leaks, particularly around hoses, fittings, and seals. Tighten any loose connections or replace damaged components.
   
4. Test Hydraulic Pump: If the above steps do not resolve the issue, test the hydraulic pump’s output. If the pump is faulty, it may need to be replaced or repaired.
   
5. Inspect Solenoid and Valve: Ensure the solenoid is working correctly, and check if the control valve is opening fully when engaged. If either is faulty, replacement might be necessary.
   

Conclusion
Slow auxiliary hydraulics on the CAT 226 can be caused by low hydraulic fluid, dirty filters, hydraulic leaks, or issues with the pump, solenoid, or valve. By systematically troubleshooting each potential cause, you can resolve the issue and restore proper function to the auxiliary hydraulics.