Modular Clutch Description; Operation - Chrysler PT Cruiser Service & Repair Manual

6 - 30 CLUTCH
MODULAR CLUTCH
DESCRIPTION
2.0/2.4L MODELS (Except Turbo)
The modular clutch assembly (Fig. 55) is located
between the engine and manual transaxle in the
transaxle bellhousing, and is responsible for trans-
mitting engine power to the transaxle. The modular
clutch is an assembly which incorporates a self-ad-
justing design and consists of the following compo-
nents:
• Flywheel
• Clutch Disc
• Pressure Plate
• Diaphragm Spring
• Adjusting Ring
• Sensor
• Cover
Fig. 55 Modular Clutch Assembly—Typical
1 - MODULAR CLUTCH ASSEMBLY
2.4L TURBO MODELS
Models equipped with the 2.4L Turbo Engine
option also utilize a modular clutch assembly, how-
ever, this application incorporates a Dual-Mass Fly-
wheel (DMF), is not of a self-adjusting design, and is
serviceable.

OPERATION

The modular clutch assembly is designed to trans-
mit power from the engine to the manual transaxle.
This is accomplished by the friction and clamping
force generated when the spring loaded pressure
plate locks the clutch disc to the flywheel (Fig. 56).
The clutch disc, which is splined to the transaxle
input shaft, transmits power until the center of the
diaphragm spring is depressed, and the clamp force
is removed from the disc. The self -adjusting feature
of this clutch assembly relies on the sensor ring and
the adjuster ring (Fig. 57) , which works its way
around a ramped clutch cover, taking up clearance as
the clutch disc wears and maintaining diaphragm
spring force throughout the life of the clutch. The pri-
mary benefits of this design are reduced pedal effort,
constant release load over clutch life, and extended
clutch life.
Fig. 56 Clutch Coupling Powerflow - Typical
PT