Possible causes of oil leakage from a Volkswagen automatic transmission:
1. Seals and gaskets:
* Worn or damaged shaft seals, pan gaskets or filter gaskets may leak oil.
2. Seals:
* The seals on the input and output shafts may become worn or damaged, causing oil to leak.
3. Brake bands:
* Worn or damaged brake bands may cause oil leakage due to friction.
4. Oil filter:
* A clogged or leaking oil filter can cause oil leakage.
5. Oil pan:
*A damaged or deformed oil pan or drain plug may cause oil leakage.
6. Piping and hoses:
* Worn or damaged cooling or oil supply lines or hoses may leak oil.
7. Torque converter:
* Oil leakage from the torque converter may be caused by damaged seals or wear.
8. Oil overflow:
* Excessive oil in the transmission may cause leakage from the overflow holes.
Consequences of oil leakage from the automatic transmission:
*Damage to internal gearbox components
* Deterioration of gearbox performance
* Increased wear and reduced service life
* Problems with gear shifting
* Complete gearbox failure
Diagnosis and elimination of oil leaks:
1. Determine the source of the leak: Inspect the transmission for visible leaks. Use an ultraviolet light to detect small leaks.
2. Replace worn parts: Repair all damaged seals, gaskets and seals.
3. Check and clean the oil filter: Replace a dirty or clogged filter.
4. Repair the oil pan: Replace a damaged or deformed oil pan or drain plug.
5. Check lines and hoses: Replace worn or damaged lines and hoses.
6. Check the torque converter: If necessary, repair or replace the faulty torque converter.
7. Drain and refill oil: Drain the old oil and replace it with new oil that meets the manufacturer’s specifications.
Preventing oil leaks:
* Check the gearbox oil level regularly.
* Change the oil and filter in the gearbox in accordance with the maintenance schedule.
* Avoid aggressive driving and overload.
* Promptly repair any leaks found.