How to Resolve JCB Excavator C130C-13 Spool Brake Solenoid Open Circuit

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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JCB Diagnostic tool

Potential Causes:

  1. Defective spool brake solenoid coil.
  2. Disconnected or faulty wire harness connected to the spool lock solenoid.

Diagnostic Procedure:

  1. 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.
  2. 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:

  1. Replace the Solenoid Coil
    • If the resistance test indicates a faulty coil, replace it with a new, compatible unit.
  2. 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.