Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 08. MECHANISM AND FUNCTION 36. CLUTCH 02. Clutch
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W1860BE.book Page 3 Tuesday, January 28, 2003 11:01 PM
CLUTCH
CLUTCH
2. Clutch
A: CONSTRUCTION
1. NON-TURBO MODELS
Applying foot pressure to the clutch pedal moves the release lever. This causes the release bearing
to slide on the guide, pressing the center of the diaphragm spring. The diaphragm spring is warped
and the force having pressed the pressure plate is lost. As a result, the flywheel, clutch disc and
pressure 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.
CL-3
W1860BE.book Page 4 Tuesday, January 28, 2003 11:01 PM
CLUTCH
CLUTCH
Non-turbo models
(1)
(8)
(2)
(3)
(6)
(7)
(5)
(4)
CL-00085
(1) Operating cylinder (4) Clutch cover (7) Ball bearing
(2) Release lever (5) Transmission main shaft (8) Flywheel
(3) Release bearing (6) Clutch disc
CL-4
W1860BE.book Page 5 Tuesday, January 28, 2003 11:01 PM
CLUTCH
CLUTCH
2. TURBO MODELS
Applying foot pressure to the clutch pedal moves the release lever. This causes the release bearing
to slide on the guide, pulling the center of the diaphragm spring. The diaphragm spring is warped
and the force having pressed the pressure plate is lost. As a result, the flywheel, clutch disc and
pressure plate 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-5
W1860BE.book Page 6 Tuesday, January 28, 2003 11:01 PM
CLUTCH
CLUTCH
2.0 L turbo model
(1) (2) (3)
(4)
(10)
(9)
(8)
(7)
(6)
(5)
CL-00245
(1) Spring bracket (5) Flywheel (9) Ball bearing
(2) Spring (6) Clutch cover (10) Release bearing
(3) Release lever (7) Clutch disc
(4) Operating cylinder (8) Transmission main shaft
CL-6
W1860BE.book Page 7 Tuesday, January 28, 2003 11:01 PM
CLUTCH
CLUTCH
STi models
(2)
(1) (3) (4)
(10)
(9)
(8)
(7)
(6)
(5)
CL-00237
(1) Spring bracket (5) Flywheel (9) Ball bearing
(2) Spring (6) Clutch cover (10) Release bearing
(3) Release lever (7) Clutch disc
(4) Operating cylinder (8) Transmission main shaft
CL-7
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