31N4-30131 Solenoid Valve for Hyundai R140LC-7, R210LC-7, R215LC-7

   The 31N4-30131 is designed for the rigorous 24V electrical systems of Hyundai’s Dash-7 series. These machines rely on CAPO (Computer Aided Power Optimization) technology, where the 31N4-30131 acts as the bridge between the computer's commands and the hydraulic system's physical movement. It is built to maintain precise shifting even under high-vibration and high-temperature conditions found in heavy earthmoving environments.

The SPARKLING MACHINERY NEW 31N4-30131 Solenoid Valve Photo:

Why Choose the SPARKLING 31N4-30131 Solenoid Valve?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Optimized Coil Winding: Designed to prevent "heat soak" failure during continuous 24-hour operation.

                                                        •    - Corrosion-Resistant Plunger: Features a hardened internal spool to resist wear from hydraulic micro-particles.

                                                        •    - Standard 2-Pin Connector: Ensures a waterproof and dustproof connection to the Hyundai factory wiring harness.

                                                        •    - Enhanced Pilot Precision: Provides the exact pressure drop required for smooth transitions in travel speed and power modes.

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                                          • Compatible Hyundai Excavator Models

                                            This solenoid is widely used across the medium-class Robex crawler excavator range:

                                            Machine Model	Series	Operating Voltage
                                            R140LC-7	Robex Dash-7	24V DC
                                            R210LC-7	Robex Dash-7	24V DC
                                            R215LC-7	Robex Dash-7	24V DC
                                            R250LC-7	Robex Dash-7	24V DC

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Q&A Section

Q1: What are the common symptoms of a failed 31N4-30131 solenoid?

A: If your excavator is "stuck" in low travel speed, the power boost function isn't engaging, or the swing motor feels locked, the 31N4-30131 may be faulty. You might also see an error code on the instrument cluster related to the pump solenoid or pilot circuit.

Q2: Is it possible to clean this valve if it is sticking?

A: While you can remove the cartridge and clean it with brake cleaner to remove debris, a solenoid that is sticking due to a weak internal spring or a burnt coil cannot be repaired and must be replaced to ensure machine safety.

Q3: Does this part number fit the Dash-9 series?

A: No. While they may look similar, the Dash-9 series (e.g., R210LC-9) typically uses different part numbers with different resistance values. Always verify your parts manual for the Dash-7 specific 31N4-30131.

About SPARKLING MACHINERY:
   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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