ADAPTER 1296400 - Caterpillar

Table 1
Related Components: Possible Causes: Recommended Action:
Valve/Lines Low pilot pressure Refer to Testing and Adjusting, KENR9615, "Relief Valve (Pilot) - Test and Adjust"
Stick Pump to Cylinder Head End (PCHE) Independent Metering Valve (IMV) spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Stick Pump to Cylinder Rod End (PCRE) IMV spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Stick Cylinder to Tank Rod End (CTRE) IMV spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Stick Drift Reduction Valve (DRV) is malfunctioning Refer to Troubleshooting, "Drift Reduction Valve - Functional Test"
Combiner spool is malfunctioning Refer to Troubleshooting, "Flow Combiner Valve - Functional Test"
Idler or drive pump bypass stem is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Compensator spool in stick IMV section is malfunctioning Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Stick Lowering Check Valve (SLCV) is malfunctioning Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Pilot relief valve is malfunctioning Refer to Testing and Adjusting, KENR9615, "Relief Valve (Pilot) - Test and Adjust"
Main relief valve is malfunctioning Refer to Troubleshooting, "Relief Valve (Main) - Functional Test"
Warm-up valve is malfunctioning Refer to Troubleshooting, "Hydraulic System Warm-Up - Functional Test"
Stick line relief valve is malfunctioning Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Electronics/Harness/Solenoids Drive pump bypass Proportional Hydraulic Modulating Valve (PHMV) solenoid is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Idler pump bypass PHMV solenoid is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Stick PCHE PHMV solenoid is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Stick CTRE PHMV solenoid is malfunctioning
Stick PCRE PHMV solenoid is malfunctioning
Combiner PHMV solenoid is malfunctioning Refer to Troubleshooting, "Flow Combiner Valve - Functional Test"
SLCV solenoid is malfunctioning Refer to the appropriate diagnostic code troubleshooting procedure
Software Drive pump bypass calibration is incorrect Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Idler pump bypass calibration is incorrect
Stick PCHE PHMV cracking current is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"
Stick PCRE PHMV cracking current is incorrect
Stick CTRE PHMV cracking current is incorrect
Stick PCHE PHMV slope is incorrect
Stick PCRE PHMV slope is incorrect
Stick CTRE PHMV slope is incorrect
Combiner calibration is incorrect Refer to Troubleshooting, "Flow Combiner Valve - Functional Test"
Pump/Motor/Tank Pump displacements do not match desired displacements Refer to Testing and Adjusting, KENR9615, "Pump Flow Measurement"
(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.