702-21-07010 EPC Proportional Solenoid Valve for Komatsu Excavator

Product Overview

This 702-21-07010 EPC proportional solenoid valve is a core hydraulic pump control component for Komatsu heavy machinery. Installed on the control valve block of the main hydraulic pump, it receives electric signals from the pump controller to precisely adjust control oil pressure, changing the angle of the main pump swash plate and accurately regulating flow and power output of the whole hydraulic system. Our replacement solenoid valve assembly is built to match the mounting requirements and hydraulic performance for heavy equipment overhaul.

Key Specifications

Compatible Models

• Excavators: PC200-6, PC130-6, PC240-6, PC100-6, PC120-6, PC400-6, PC400-7, PC450-6
• Bulldozers: D155A, D155AX
• Wheel Loaders: WA380, WA400
• Mobile Crushers: BR100J, BR200S, BR350JG

FAQs

Q: What is the role of this 702-21-07010 EPC solenoid valve?

A: It manages the main hydraulic pump swash plate angle by adjusting control pressure based on controller signals. It precisely controls hydraulic flow and power delivery across the machine to deliver smooth digging and lifting performance.

Q: What failure symptoms indicate this EPC valve needs replacement?

A: Common signs include weak digging force, slow excavator movement, fluctuating hydraulic power, unstable engine speed under load, or machine power loss during heavy digging tasks.

Q: Will this valve fit my Komatsu machine directly?

A: It is designed for Komatsu -6 and -7 series excavators, bulldozers and loaders with 4D102 and 6D102 engines. Double-check your original part number and machine model before ordering.

Q: What should I note during installation?

A: Fully clean the hydraulic circuit before installation to avoid contamination. Professional hydraulic service is recommended to prevent hydraulic pump damage and oil leakage after replacement.

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