What is a breather on a transmission?
Breather allows the transmission to breathe air when the air inside transmission expands or contracts due to heating and cooling of lubricating oil during vehicle running. Breather allows the hot air to escape and cool air to enter into the transmission to prevent overheating issue.
What is the purpose of a gearbox breather?
In this article, we will consider the gearbox breather, its purpose, design, and principle of operation. A breather (or breather valve) is a special accessory which helps sealed car components (gearbox, engine, axles) to be vented to the atmosphere and maintain pressure balance.
Why do you need a transfer case breather?
Transfer case breather Front and rear axles also operate with the help of oil, and their internal space must be open to the atmosphere in order to avoid pressure increase inside the unit. For this purpose, the design of front and rear axles includes axle breathers.
Why are breathers important in a sealed car?
A breather (or breather valve) is a special accessory which helps sealed car components (gearbox, engine, axles) to be vented to the atmosphere and maintain pressure balance. On the one hand, breathers allow to relieve excess pressure (level the pressure during heating or cooling), and on the other hand, they prevent fluid leakages.
What is the function of a breather valve?
Breather: principle of operation and its peculiarities. A breather (or breather valve) is a special accessory which helps sealed car components (gearbox, engine, axles) to be vented to the atmosphere and maintain pressure balance.
Transfer case breather Front and rear axles also operate with the help of oil, and their internal space must be open to the atmosphere in order to avoid pressure increase inside the unit. For this purpose, the design of front and rear axles includes axle breathers.
How does the transmission breather control system work?
The breather control system is in fluid communication with both the fill pipe and the transmission housing cavity such that pulling out the dipstick and breaking the seal equalizes the pressure within the full pipe, the transmission housing cavity, and the valve housing cavity to atmospheric pressure.
Why do you need a breather control valve?
The use of a breather control system which restricts the exchange of air with atmosphere results in residual pressure or vacuum developing within the transmission housing. Most automatic transmissions use an ullage rod, or dipstick, for measuring operating fluid levels.
Where is the breather located on a gearbox?
If we talk about the gearbox breather, it is also necessary to know how to remove the breather accurately. On some cars, it is enough to remove the rubber cap and clean the valve. On other models, the breather (without a rubber cap) is located on the 5-th gear cover.