Automatic transmission cooling system Passat B5 Plus
The Passat B5 Plus automatic transmission cooling system is designed to maintain the proper operating temperature of the transmission. It consists of the following components:
Transmission cooler
*Located at the front of the vehicle, next to the engine radiator.
*Consists of a series of tubes through which transmission fluid circulates.
Cooler piping
* Connect the cooler to the gearbox.
* Transport transmission fluid through a cooler.
Transmission fluid pump
* Located inside the automatic transmission.
* Pumps transmission fluid through the cooling system.
Thermostat
*Located in the engine cooling system.
* Regulates the flow of coolant through the automatic transmission cooler.
Coolant
* Circulates through the transmission cooler to remove heat from the transmission.
How the automatic transmission cooling system works:
1. Transmission fluid circulates through the automatic transmission, absorbing heat generated by the operation of clutches, gears and other components.
2. Increased fluid temperature causes the thermostat to open, allowing coolant to circulate through the automatic transmission cooler.
3. The cooler transfers heat from the transmission fluid to the coolant, cooling the fluid to a safe operating temperature.
4. The cooled liquid returns to the thermostat and mixes with the warm liquid, maintaining the desired temperature in the system.
Automatic transmission cooling system maintenance:
*Change transmission fluid and filter regularly: Old and dirty fluid can cause poor cooling and shorten transmission life.
*Check the transmission fluid level: Low fluid levels can cause overheating and damage to the transmission.
* Check the transmission cooler for leaks: Leaks can lead to low fluid levels and overheating.
* Clean the automatic transmission cooler: The cooler fins can become clogged with debris and reduce cooling efficiency.
*Check the thermostat for proper operation: A faulty thermostat can cause the transmission to undercool or overheat.