This guide provides step-by-step instructions to diagnose and resolve the C130C-13 Spool Brake Solenoid Open Circuit issue on JCB 140 excavators.
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Potential Causes:
- Defective spool brake solenoid coil.
- Disconnected or faulty wire harness connected to the spool lock solenoid.
Diagnostic Procedure:
- Check Solenoid Coil Resistance
- Use a multimeter to measure the resistance across the terminals of the spool lock solenoid coil.
- The correct resistance should be approximately 37 ohms.
- If the value is significantly different, the coil may be faulty.
- Inspect Wire Harness Connection
- Ensure the wire harness is securely connected between the spool lock solenoid and the machine wiring system.
- Use the attached diagram or photo for solenoid location reference.
Corrective Actions:
- Replace the Solenoid Coil
- If the resistance test indicates a faulty coil, replace it with a new, compatible unit.
- Repair or Replace the Wire Harness
- If the wiring is found to be damaged, corroded, or not properly connected, repair or replace the faulty section.
More topics for JCB machine,please refer to:JCB Machine Trouble Repair.