Description

Lock-up System

Lock-up Clutch

1. Operation (clutch on)

With the lock-up clutch on, the oil in the chamber between the torque converter cover and lock-up piston is discharged, and the converter oil exerts pressure through the piston against the converter cover. As a result, the converter turbine is locked on the converter cover firmly. The effect is to bypass the converter, thereby placing the car in direct drive.

Power flow

The power flows by way of:

Engine

|

Drive plate

|

Torque converter cover

|

Lock-up piston

|

Damper spring

|

Turbine

|

Mainshaft

2. Operation (clutch off)

With the lock-up clutch off, the oil flows in the reverse of CLUTCH ON. As a result, the lock-up piston is moved away from the converter cover; that is, the torque converter Iock-up is released.

Power flow

|

Engine

|

Drive plate

|

Torque converter cover

|

Pump

|

Turbine

|

Mainshaft