230634 - Miller Throttle Solenoid Kit with Spring

Genuine Miller 230634 Throttle Solenoid Assembly

The Miller 230634 Throttle Solenoid is a critical electromechanical component designed specifically for Miller engine-driven welding power sources. This OEM part serves as the primary actuator for the machine's automatic idle control system. By dynamically adjusting the engine throttle linkage, the solenoid allows the welder to maintain low RPMs during periods of inactivity and instantly ramp up to operating speed when a welding arc is struck or an auxiliary load is applied. This functionality is essential for maintaining fuel efficiency, reducing job site noise pollution, and extending the overall lifespan of the engine by minimizing unnecessary high-RPM runtime.

This assembly includes a specifically calibrated return spring with a tension rating of 4-8.4 lbs. This spring is integral to the system, providing the necessary mechanical resistance to return the throttle to the idle position when the solenoid de-energizes. Using a generic solenoid or an incorrect spring rate can lead to erratic idle behavior, failure to reach top speed, or "hunting" where the engine RPM fluctuates unstably. The Miller 230634 is engineered to meet the precise electrical and mechanical specifications of the original equipment, ensuring a seamless installation and reliable performance under the harsh conditions typical of industrial environments.

Constructed with high-quality materials, the solenoid features a durable housing that protects the internal coil and plunger from dust, moisture, and vibration—common hazards in welding applications. The electrical connectors are designed to mate perfectly with the machine's existing wiring harness, eliminating the need for splicing or modification. For maintenance professionals and fleet managers, utilizing genuine Miller parts like the 230634 ensures that equipment downtime is minimized and that the machine continues to operate within factory specifications for output and efficiency.

Whether replacing a failed unit that has caused the machine to stick at high idle or repairing a unit that fails to rev up, this kit provides the complete solution. It is compatible with a range of Miller engine drives; please verify compatibility with your specific model's parts manual before installation.