Part Compatibility: The Mitsubishi Excavator Engine Parts MM433424, S4L 32A45 - 00040, S4S Water Pump is designed specifically for Mitsubishi excavator engines. It is an essential component for the proper cooling of the engine.
Model Designation: The part numbers MM433424 and S4L 32A45 - 00040 (along with S4S, which might indicate a specific engine series or subtype) help in the precise identification of the water pump model for correct installation and replacement purposes.
Performance Specifications
Flow Capacity
The water pump is designed to provide a specific flow rate of coolant. While the exact value may vary depending on the engine's requirements and operating conditions, it typically has a flow rate in the range of several tens to a few hundred liters per minute. For example, it might have a nominal flow rate of around 80 - 120 liters per minute to ensure efficient heat transfer from the engine to the radiator.
Pressure Generation
It generates a certain amount of pressure to circulate the coolant through the engine's cooling passages and the radiator. The pressure is usually in the range of 0.8 - 1.2 bars (11.6 - 17.4 psi). This pressure is sufficient to overcome the resistance of the hoses, passages, and the radiator core to ensure a continuous and smooth coolant flow.
Speed - Dependent Performance
The performance of the water pump is related to the engine speed. As the engine speed increases, the pump's rotational speed also increases, which in turn affects the flow rate and pressure. The pump is designed to operate effectively over a range of engine speeds. For example, it can function well from the engine's idle speed (around 600 - 800 revolutions per minute, rpm) up to the maximum operating speed (which could be around 2000 - 2200 rpm for this type of excavator engine).
