COVER AS 1347771 - Caterpillar

Table 1
Related Components: Possible Causes: Recommended Action:
Valve/Lines Main relief valve failure Refer to Troubleshooting, "Relief Valve (Main) - Functional Test"
Low setting on main relief valve
Stick Head End (HE) line relief failure Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Refer to Testing and Adjusting, UENR0445, "Relief Valve (Pilot) - Test and Adjust"
Low setting on stick HE line relief
Bucket HE line relief failure Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Refer to Testing and Adjusting, UENR0445, "Relief Valve (Pilot) - Test and Adjust"
Low setting on bucket HE line relief
Drive pump bypass malfunction Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Idler pump bypass malfunction
Warm-up valve malfunction
Boom Independent Metering Valve (IMV) spool malfunction Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Bucket IMV spool malfunction
Stick IMV spool malfunction
Software Boom Proportional Hydraulic Modulating Valve (PHMV) slope calibration is incorrect Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Bucket PHMV slope calibration is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Stick PHMV slope calibration is incorrect
Boom PHMV cracking calibration is incorrect
Bucket PHMV cracking calibration is incorrect
Stick PHMV cracking calibration is incorrect
Pump/Motor/Tank Pumps fail to stroke up Refer to Troubleshooting, "Pump Stroke - Functional Test"
Engine Low engine power 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.