WASHER 2210351 - Caterpillar

Table 1
Related Components: Possible Causes: Recommended Action:
Valve/Lines Main relief valve failure Refer to Troubleshooting, "Relief Valve (Main) - Functional Test"
Idler pump bypass stem is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Boom/bucket warm-up valve failure
Bucket Rod End (RE) line relief valve failure Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Bucket Pump to Cylinder Rod End (PCRE) Independent Metering Valve (IMV) spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Bucket Cylinder to Tank Head End (CTHE) IMV spool is malfunctioning
Low pilot pressure Refer to Testing and Adjusting, UENR0445, "Relief Valve (Pilot) - Test and Adjust"
Compensator spool in boom IMV section is malfunctioning Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Electronics/Harness/Solenoids Boom/Bucket joystick is malfunctioning Refer to Troubleshooting, "Joystick - Functional Test"(2)
Bucket PCRE Proportional Hydraulic Modulating Valve (PHMV) is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Bucket CTHE PHMV is malfunctioning
Bucket bypass PHMV is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
The ECM is malfunctioning. A failure of the ECM is unlikely Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with Caterpillar. This consultation may effect repair time. Follow the procedure in Troubleshooting, "ECM - Replace" to replace the ECM
Software Idler pump bypass calibration is incorrect Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Bucket PCRE PHMV cracking current is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Bucket PCRE PHMV slope is incorrect
Bucket CTHE PHMV cracking current is incorrect
Bucket CTHE PHMV slope is incorrect
Engine Low engine speed Refer to Troubleshooting, "Hydraulic Power - Functional Test"
(1) Denotes actions that should be completed first in the troubleshooting sequence.
(2) Denotes Functional Tests that should be considered as a last resort in the troubleshooting process.