Friction discs, automatic transmission 4F27E
Friction discs are the main components in 4F27E automatic transmissions and are used to transmit torque between different planetary gears.
Characteristics of friction discs 4F27E:
* Material: Typically made from special friction paper with a synthetic binder.
* Shape: Ring-shaped with inner and outer diameters.
* Thickness: Varies depending on disc type.
* Quantity: The 4F27E automatic transmission uses 11 friction discs.
Types of friction discs 4F27E:
There are two main types of friction discs in the 4F27E automatic transmission:
*Single-acting discs: Used to transmit torque in one direction (for example, from the input shaft to the planetary gear).
*Double-acting discs: Used to transmit torque in two directions (for example, from a planetary gear to a drive shaft).
Functions of friction discs:
* Transmit torque between rotating elements.
* Provides smooth gear shifting.
* Dampen vibrations and reduce noise.
Replacing friction discs:
Friction discs usually last from 100,000 to 150,000 km. However, they can fail sooner under extreme loads or lack of proper maintenance.
Symptoms indicating the need to replace friction discs:
* Gear slippage
* Gear shift delay
* Jerks and shocks when switching
* Transmission fluid leaks
To replace the friction discs, you need to remove the gearbox and disassemble it. This is a complex procedure and should only be performed by a qualified mechanic.