Causes of leakage of the rear crankshaft oil seal of an automatic transmission:

* Oil seal wear due to age, mileage or extreme operating conditions
*Damage during installation or removal
* Axial displacement of the crankshaft due to worn or broken bearings
* Deformation or damage to the gearbox housing
* Increased oil pressure in automatic transmission
*Installing the wrong oil seal

Consequences of a leak:

* Loss of transmission fluid can lead to overheating and premature failure of the automatic transmission.
* Environmental pollution.
* Increased noise and vibration during transmission operation.

Repair:

The repair includes replacing the rear crankshaft oil seal of the automatic transmission. Here are the basic steps:

1. Prepare for repair: Drain the transmission fluid, disconnect the battery and remove the necessary components to access the transmission.
2. Remove the automatic transmission: Disconnect the transmission from the engine and other components and remove it from the vehicle.
3. Replace the oil seal: Remove the old oil seal and install the new one, lubricating the sealing surface with an appropriate sealing lubricant.
4. Install the automatic transmission: Install the transmission back into the vehicle and reconnect any disconnected components.
5. Fill with transmission fluid: Fill with the recommended transmission fluid to the specified level and check the level after starting the engine.

Adviсe:

*Use high quality replacement parts to ensure long lasting repairs.
*Always follow the manufacturer’s instructions for installation and maintenance.
* Inspect and replace other components that may cause leakage, such as journal bearings or O-rings.
* After repair, drive a short distance and check the transmission fluid level and leaks.

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