Brake band automatic transmission Nissan Sunny FB15
An automatic transmission brake band is a component of an automatic transmission (AT) that is used to transmit torque between various components of the transmission. The Nissan Sunny FB15 automatic transmission uses a one-sided brake band.
Device and location
The brake band consists of the following components:
*Metal band with friction material: The band is the main actuator of the brake and transmits torque through friction.
* Piston: The piston is activated by hydraulic pressure and forces the belt against the drive pulley.
* Reset Spring: The spring returns the piston and band to their original position when the pressure is released.
The brake band is located inside the automatic transmission and is connected to other components, such as:
* Drive Pulley: The pulley connects to the motor shaft and transmits torque to the brake band.
* Driven pulley: The pulley connects to the planetary gears or automatic transmission gears and stops their rotation when the brake band is applied.
Job
The brake band is activated by hydraulic pressure directed into the piston through the corresponding control channels in the automatic transmission. When pressure is applied, the piston extends and forces the belt against the drive pulley, creating friction and stopping or slowing down the rotation of the driven pulley.
Replacement
Replacing the brake band of a Nissan Sunny FB15 automatic transmission is a complex procedure that must be performed by a qualified mechanic:
1. Drain the automatic transmission fluid and remove the pan.
2. Remove the brake band drum housing.
3. Disconnect the brake band piston.
4. Remove the old brake band and install a new one.
5. Reassemble the components in reverse order and check that the automatic transmission is operating correctly.
Conclusion
The brake band of the Nissan Sunny FB15 automatic transmission is an important component that ensures smooth and efficient operation of the gearbox. Its proper maintenance and timely replacement are critical to the longevity and reliability of the automatic transmission.