Automatic transmission oil pump for Volkswagen Passat
Function:
The oil pump is one of the main components of an automatic transmission, responsible for delivering pressurized transmission fluid (ATF) through the system to the various lubrication points within the transmission.
Location:
Typically the oil pump is located in the transmission housing, next to the oil pan.
Types:
Volkswagen Passat transmissions use two main types of oil pumps:
*Gear Pump: Consists of two gears that rotate and pump ATF.
* Rotary Pump: Uses a spinning rotor placed in the stator to generate ATF pressure.
Signs of a malfunctioning oil pump:
*Low ATF pressure
* Transmission fluid leaks
*Loud noises when shifting gears
* Gear shift slippage or delay
* Transmission overheating
Causes of malfunction:
* Wear of gears or pump rotor
* Pump blockage due to dirt or debris
* Damage to seals or pump housing
*Low transmission fluid level
Consequences of the malfunction:
A faulty oil pump can cause serious transmission damage, including:
* Wear of gears and bearings
* Damage to hydraulic components
* Transmission overheating
* Complete gearbox failure
Service:
The oil pump should be maintained according to the vehicle manufacturer’s recommendations. This includes:
* Replace ATF and oil filter at regular intervals
* Checking the transmission fluid level
* Inspect the oil pump for leaks or damage