Component Description

COMPONENT DESCRIPTIONS
The Torque Converter:
- Acts as a fluid coupling between the engine and transmission geartrain.
- Provides multiplication of engine torque when required.
- Consists of an impeller, turbine and stator, housed within a converter cover.
- Has a lock-up clutch with variable slip control.
The Transmission Casing:
- Houses the geartrain and electro-hydraulic control unit.
- Contains the input speed sensor which measures turbine speed.
- Contains the output speed sensor which measures the transmission output speed.
- Contains the hydraulic system pump.
- Contains the fluid temperature sensor.
The Epicyclic Geartrain:
- Provides five forward gears and Reverse.
- Has hydraulically actuated, multi-disk clutches, to select the required gear ratios.
- Features clutch-to-clutch operation to permit gear shifts for uninterrupted power flow.
The Electro-Hydraulic Control Unit:
- Is located in the lower part of the unit, within the fluid pan.
- Is controlled by the transmission control module, and the manual selector valve which is operated by the gear selector lever via a Bowden cable.
- Regulates the flow of fluid to the geartrain clutches via three solenoid-operated valves and the manual selector valve.
- Has five pressure regulators for controlling fluid pressures within the system.
- Is connected to the transmission control module via a 16-way connector mounted on the left-hand side of the transmission casing.
The Hydraulic System Pump:
- Is located at the front of the transmission casing.
- Is driven from the impeller hub, pressurizing the fluid whenever the engine is running.
- Supplies fluid under pressure to the torque converter, geartrain, electro-hydraulic control unit and the lubrication circuit.
- Draws fluid from the fluid pan below the transmission casing, through a non replaceable filter.
The Rear Extension Housing:
- Is bolted to the rear of the transmission casing.
- Provides the rear engine/transmission mounting point.
- Carries the transmission output shaft oil seal.