[davidgarner]

Does anyone know where the breather vent is located on the Transfer Case? I am not referring to the weep hole on the right axle housing that is situated between two seals. The transfer case needs a way to equalize the air pressure inside the TC with the outside air. Otherwise gear oil can be forced past the drive axle seals when the oil in the TC heats up.

2004 Sienna AWD

 

[Jagz]

Does anyone know where the breather vent is located on the Transfer Case? I am not referring to the weep hole on the right axle housing that is situated between two seals. The transfer case needs a way to equalize the air pressure inside the TC with the outside air. Otherwise gear oil can be forced past the drive axle seals when the oil in the TC heats up.

2004 Sienna AWD

The breather vent is sadly in an inaccessible place without removing the tc. It is located on the top the rear cover. Here is a diagram.

36111H is the breather.

 

[davidgarner]

Thanks Jagz!