Hydraulic On-Demand Fan Drive (A Key Feature of the 345B):
Unlike fixed-speed or mechanically-clutched fans, the 345B utilizes an electronically controlled, hydraulic fan motor.
An Electronic Control Module (ECM) receives data from temperature sensors for coolant, hydraulic oil, and intake air.
The ECM modulates the fan speed proportionally to the actual cooling demand. This "on-demand" operation provides significant benefits:
Fuel Efficiency: The fan doesn't run at full speed unnecessarily, reducing parasitic power loss from the engine.
Noise Reduction: Lower fan speed means significantly lower operating noise.
Cooling Optimization: Prevents engine overcooling and ensures precise temperature management.
Debris Control: Running slower in clean conditions pulls less dust and debris into the cores.
This 149-1145 radiator is used for 345B excavator.
Related part number:
148-9107
148-9108
148-9109
099-0001
8T-4183
8T-4223
8T-4956
7X-0618
8C-3681
096-4035
8C-3631
