Passive cooling
*Transmission Housing: The transmission housing typically has cooling fins that help dissipate heat.
* Cooling pipes: Some Pajero 4 models have cooling pipes running through the gearbox housing. These tubes carry coolant from the engine or radiator to help dissipate heat.
*Plate Heat Exchanger: Mounted between the transmission and radiator, this heat exchanger allows the engine coolant to remove heat from the transmission fluid.
Active cooling
*Cooling Fan: The 3.8L and 4.0L Pajero 4 models have a cooling fan that turns on at a certain transmission fluid temperature to increase airflow around the transmission housing.
Additional cooling
*Additional radiator: Some Pajero 4 models, especially those used in heavy-duty applications, may require an additional cooler for transmission fluid.
* Upgraded Cooling Fan: In some cases, installing a larger or additional cooling fan may be beneficial.
Tips for Improving Transmission Cooling
*Change transmission fluid regularly: Fresh fluid dissipates heat more effectively.
* Installing an optional radiator: This is especially important for vehicles that frequently tow heavy loads or are driven in hot climates.
*Adding Cooling Pipes: If the vehicle is not originally equipped with cooling pipes, they can be installed to improve cooling.
*Cooling Fan Upgrade: Installing a larger fan can greatly improve transmission cooling.
* Splash and Mud Protection: Installing mud flaps or shields can help protect the transmission housing from road deposits that can impair cooling.