702-21-07610 Solenoid Valve for Komatsu PC200-8 PC300-8 PC350-8

702-21-07610 Main Pump Solenoid Valve

The 702-21-07610 solenoid valve is used in Komatsu electro-hydraulic control systems. It is commonly identified as a main pump or hydraulic control solenoid valve on Dash-8 excavators and also appears on selected Komatsu dozers and wheel loaders.

This wide machine coverage makes the old valve more useful for identification than the machine model alone. The connector, wire exit, mounting face and hydraulic port layout should match the removed part before shipment.

One Valve Across Different Komatsu Machine Types

Unlike many solenoid valves that are searched mainly by one excavator series, 702-21-07610 is found across Komatsu excavators, bulldozers and wheel loaders. This explains why buyers may encounter the same number while repairing very different machines.

For older machines or equipment with previous hydraulic repairs, compare the physical valve rather than relying only on a PC, D-series or WA-series model number.

Komatsu Applications for 702-21-07610

Excavator references include PC78US-8, PC130-8, PC138US-8, PC160-8, PC190-8, PC200-8, PC210-8, PC220-8, PC228US-8, PC240-8, PC270-8, PC300-8, PC350-8, PC400-8, PC450-8, PC490-10 and PC550LC-8.
Dozer references include D61, D65, D85 and D155.
Wheel loader and wheel dozer references include WA450, WA470, WA480, WA500, WA600 and WD600.
HB205 and HB215 hybrid excavator references may also appear in parts catalogs.
Exact fitment can vary by machine serial number and hydraulic arrangement, so the machine model should be used as an application reference rather than the only identification method. Compare the removed valve number, connector and mounting face before ordering.

702-21-07630 as a Checking Reference

702-21-07630 is sometimes listed together with 702-21-07610 in aftermarket main pump solenoid valve catalogs for similar Komatsu applications. However, it should be treated as a checking reference rather than an automatically interchangeable part number.

If the removed valve shows 702-21-07630, compare the connector, cable position, valve body, mounting holes and hydraulic ports with the 702-21-07610 sample before confirming replacement.

What to Compare with the Old Valve

The supplied sample has an external lead with a plug connector and a compact two-port mounting face. For photo checking, send a clear view of the connector, full cable, cylindrical coil body and hydraulic mounting face.

Also photograph the old part number or packaging label when available. A similar-looking Komatsu solenoid from the 702-21-076xx family should not be selected only because the outside shape appears close.

Replacement Check After Installation

Keep the hydraulic mounting area clean during replacement and inspect the electrical plug for loose pins, oil contamination or damaged wiring. These faults can produce an incorrect diagnosis even when the solenoid valve itself is serviceable.

After installation, test hydraulic response under light operation first. If the original control problem remains, continue checking the wiring, controller signal and hydraulic circuit instead of replacing another valve without diagnosis.