17A-15-17271 Solenoid Valve (for Komatsu WA380) Full Product Overview
1. Basic Product Information
Part Number: 17A-15-17271
Name: Solenoid Valve
Applicable Models: Komatsu wheel loader WA380-3/WA420/WA470, bulldozer D155, etc.
Core Function: As the "electronic control switch" in the loader hydraulic/transmission control system, it controls the flow direction and pressure of hydraulic oil via electromagnetic force to achieve precise switching and adjustment of travel, steering, and work equipment actions.
2.Operating Instructions (Exclusive for WA380 Models)
Core Role
In the WA380 loader, this solenoid valve is mainly used for transmission control or hydraulic pump flow regulation:
Controls the on/off of transmission clutch oil circuits to realize gear shifting and power transmission;
Or adjusts hydraulic system pressure to match engine power output and avoid stalling or slow action.
Precautions
Medium Requirements: Only compatible with Komatsu original hydraulic oil (ISO VG46). Oil cleanliness must be ≤ NAS 8 level, otherwise spool jamming may occur.
Installation Orientation: The coil must be installed vertically upward (or horizontally); never install the coil downward to avoid impurity deposition causing failure.
Electrical Parameters: Adapts to 24V DC vehicle power supply. Correct positive/negative wiring is required to avoid burning the coil due to reverse connection.
Maintenance Interval: Inspect every 2000 hours, clean the valve body and replace seals to prevent leakage.
Product Category & Introduction
Product Category
3. Product Category & Introduction
Product Category
It belongs to the pilot-operated solenoid valve for construction machinery hydraulic systems, a core actuator in the loader hydraulic control circuit.
Key Category Features
Working Principle: When energized, the electromagnetic coil generates magnetic force to drive the pilot spool, using hydraulic pressure difference to push the main valve open/closed, realizing fluid on/off or direction change; when de-energized, the spring resets and the valve closes.
Structure: Composed of an electromagnetic coil (black housing), brass valve body, spool assembly, and wiring harness plug, compatible with Komatsu original electrical interfaces.
Industry Position: Unlike general industrial solenoid valves, it features high vibration resistance, high pressure resistance, dust/waterproofing (IP65), and extreme temperature adaptability (-20℃~+80℃), specially designed for harsh working conditions such as mines and construction sites.
