How to troubleshoot a cat hydraulic excavator with low power?
How to troubleshoot a cat hydraulic excavator with low power? When it comes to troubleshooting low power concerns on a Cat® Hydraulic Excavator, Caterpillar Maintenance Expert Jeff Payne says look at the simple things first, such as checking your machine air filters and fuel filters for restrictions - before looking at cycle times; swing, stick, bucket and boom times, or valve adjustments. How to troubleshoot a pilot operated relief valve? Pilot-operated relief valves have small internal orifices which may become blocked with dirt. Blow out all passages with an air hose and run a small wire through orifices. Check also...