Subaru 2002 Impreza Service Manual page 279

OPERATION
Clutch
2. Operation
A: NON-TURBO MODEL
Applying foot pressure to the clutch pedal moves the release lever. This causes the release bear-
ing to slide on the guide, pressing the center of the diaphragm spring. The spring is warped and
the force having pressed the pressure plate is lost. As a result, the flywheel, clutch disc and pres-
sure plate are disengaged, disconnecting the driving power.
The push type clutch has the point of action at the tips of the diaphragm spring fingers, through
which the pressure plate is pressed to the clutch disc. When the power transmission is to be inter-
rupted, the diaphragm spring is forced to warp using the pivots established on the inward side
of the spring finger tips (on the principle of the lever and fulcrum) to disengage the pressure plate
from the clutch disc.
B: TURBO MODEL
Applying foot pressure to the clutch pedal moves the release lever. This causes the release bear-
ing to slide on the guide, pulling the center of the diaphragm spring. The spring is warped and
the force having pressed the pressure plate is lost. As a result, the flywheel, clutch disc and pres-
sure pl$e are disengaged, disconnecting the driving power.
In the pull type clutch, the diaphragm spring has the point of action located inward from the tip,
through which the pressure plate is pressed against the clutch disc. When the power transmission
is to be interrupted, the diaphragm spring is forced to pivot on the tip and warp away from the pres-
sure plate (on the principle of lever and fulcrum).
CL-3