9131576 PVC Main Pump Controller for HITACHI Excavator EX100-2 EX120-2 EX120-3C EX120K-3

Common Symptoms That May Require Controller Inspection

Weak hydraulic response: boom, arm, bucket, swing or travel functions respond slowly or inconsistently.

Main pump control issues: hydraulic pump output may not match operating demand, load condition or machine command.

Mode control problems: work modes, speed modes or pump output settings may not respond as expected.

Communication faults: monitor display or system communication may become unstable when the controller, harness or connector has an issue.

No power or unstable signal: fuse, power supply, ground or wiring harness faults can imitate controller failure.

Fitment Check Before Ordering

Before ordering this Hitachi 9131576 PVC main pump controller, compare it with your original controller. Important confirmation points include the controller label, part number, connector quantity, connector shape, pin layout, mounting position and software version.

For faster confirmation, please send clear photos of the original controller label, front housing, rear connector side, plug layout and machine model plate. This helps reduce wrong orders and confirms whether the controller matches your Hitachi EX100-2 or EX120-series excavator configuration.

Installation and Maintenance Notes

Disconnect machine power before removing or installing the PVC main pump controller.

Do not pull directly on the wiring harness. Release connector locks before unplugging.

Inspect all connectors for bent pins, corrosion, water ingress and loose terminals.

Check fuse, power supply, ground and harness continuity before replacing the controller.

After installation, check monitor display, machine start-up, work mode response, hydraulic pump response and fault-code status before returning the machine to work.

Ordering Information

Topvelsun supplies controllers, ECUs, MCUs, PVC controllers, pump controllers, monitor panels, sensors, wiring harnesses and electrical components for Hitachi, Caterpillar, Komatsu, Hyundai, Kobelco, Volvo and other heavy equipment brands. For this 9131576 PVC main pump controller, please provide your machine model, serial number, original part number and connector photos before quotation.

FAQ

What is 9131576 used for?

9131576 is listed as a PVC main pump controller reference for Hitachi excavator hydraulic pump control applications. Final fitment should be verified by the original controller label and connector layout.

Can this controller be confirmed by machine model only?

No. PVC main pump controllers may vary by machine serial number, software version, connector layout and hydraulic pump configuration. Photos of the original controller are recommended before ordering.

Are there confirmed cross reference numbers for 9131576?

No additional cross reference has been confirmed from public sources. Use 9131576 as the primary reference and verify by the original controller label or parts catalog.

What photos should I send for confirmation?

Please send photos of the original controller label, front and rear housing, all connectors, pin layout, mounting position and machine model plate.