The Komatsu 360 heater hose switch is located in the connection area between the inlet and outlet pipes of the heater water tank and the engine, and has a mechanical valve, which is easily overlooked by many drivers.
The heating water pipe is a pipe that brings the heat of the engine to the car through the water in the car water tank to warm the car. Usually one in and one out. If it is not installed correctly, it may make the water flow too smooth and will not have much impact.