BALL BEARING 1G6134 - Caterpillar

Table 1
Related Components: Possible Causes: Recommended Action:
Valve/Lines Idler pump bypass spool is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Boom Pump to Cylinder Rod End (PCRE) spool is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Boom Pump to Cylinder Head End (PCHE) spool is malfunctioning
Boom Cylinder to Tank Head End (CTHE) spool is malfunctioning
Low pilot pressure Refer to Testing and Adjusting, UENR7018, "Relief Valve (Pilot) - Test and Adjust"
Drift Reduction Valve (DRV) poppet is malfunctioning Refer to Troubleshooting, "Drift Reduction Valve - Functional Test"
Boom Lowering Check Valve (BLCV)is malfunctioning Refer to Troubleshooting, "Relief Valve (Line) - Functional Test"
Pilot relief valve failure Refer to Testing and Adjusting, UENR7018, "Relief Valve (Pilot) - Test and Adjust"
Electronics/Harness/Solenoids Boom/Bucket joystick is malfunctioning Refer to Troubleshooting, "Joystick - Functional Test"(1)
Idler pump bypass solenoid is malfunctioning Refer to Troubleshooting, "Bypass Valve (ACS Valve) - Functional Test"
Boom PCRE Proportional Hydraulic Modulating Valve (PHMV) is malfunctioning Refer to Troubleshooting, "IMV Calibration - Functional Test"(1)
Refer to Troubleshooting, "IMV Controllability Troubleshooting"(2)
Boom PCHE PHMV is malfunctioning
Boom CTHE PHMV is malfunctioning
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
DRV solenoid is malfunctioning(3) Refer to Troubleshooting, "Drift Reduction Valve - Functional Test"
The energize circuit of the DRV solenoid is shorted to ground(3)
BLCV solenoid is malfunctioning Refer to appropriate diagnostic code troubleshooting procedure
Software Boom PCRE PHMV cracking current is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"
Boom PCRE PHMV slope is incorrect
Boom PCHE PHMV cracking current is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"
Boom PCHE PHMV slope is incorrect
Boom CTHE PHMV cracking current is incorrect Refer to Troubleshooting, "IMV Calibration - Functional Test"
Boom CTHE PHMV slope is incorrect
Bypass calibration is incorrect Refer to Troubleshooting, "Bypass Valve (ACS Valve) - 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.
(3) Refer to appropriate diagnostic code troubleshooting procedure.