Due to worn or damaged seals:
* Pump Shaft Seal: Seals the pump shaft that rotates the transmission fluid.
* Input and output shaft seals: Seals the connections between the shafts and the transmission housing.
*Transmission Pan Seals: Seals the connection between the pan and the transmission housing.
Due to damage to the gearbox housing:
*Cracks or holes in the housing: May be caused by shock or excessive stress.
* Gaskets between housing components: May not seal properly or wear out.
Due to faulty parts:
* Damaged oil pump: Can reduce fluid pressure and cause leaks.
* Clogged oil filter: Can restrict fluid flow and create pressure that leads to leaks.
* Worn friction discs: Can create friction and heat the fluid, leading to increased pressure and leaks.
Other reasons:
*Transmission Fluid Overfill: If the transmission fluid is overfilled, fluid may leak through the breather or other points.
* Contaminated transmission fluid: Contaminants can block passages and create pressure, causing leaks.
* Faulty fluid level sensor: May give inaccurate readings resulting in overfilling or low fluid levels.