Chrysler RAM TRUCK 2500 1994 Service Manual page 234

•
CLUTCH 6 - 1
CLUTCH
CONTENTS
CLUTCH COMPONENTS
page
I • B
1 CLUTCH SERVICE
page
. 12
CLUTCH COMPONENTS
The clutch mechanism i n BR models with a gas or
diesel engine consists of a single, dry-type clutch disc
and a diaphragm style clutch cover. A hydraulic link­
age is used to engage/disengage the clutch disc and
cover.
The transmission input shaft is supported i n the
crankshaft by a bearing. A sleeve type release bear­
ing is used to engage and disengage the clutch cover
pressure plate.
The release bearing is operated by a release fork i n
the clutch housing. The fork pivots on a ball stud
mounted inside the housing. The release fork is actu­
ated by a hydraulic slave cylinder mounted i n the
housing. The slave cylinder is operated by a clutch
master cylinder mounted on the dash panel. The cyl­
inder push rod is connected to the clutch pedal.
The clutch disc has damper springs i n the disc hub.
The clutch disc facing is riveted to the hub. The fac­
ing is made from a non-asbestos material. The clutch
cover pressure plate is a diaphragm type with a one-
piece spring and multiple release fingers. The pres­
sure plate release fingers are preset during
manufacture and are not adjustable.
FACING
MATERIAL
[Vol
Fig. 1 ¥6 Engine Clutch Disc
J9406-7
CLUTCH DISC APPLICATION
A 281 mm (11 in.) clutch disc and cover are used i n
models with a 3.9L, 5.2L, or 5.9L gas engine (Figs. 1
and 2).
A 312.5 mm (12.3 in.) clutch disc and cover are
used in models with a 5.9L diesel or VIO gas engine
(Figs. 3 and 4).
The four clutch discs are all equipped with damper
springs i n the hub. The 281 mm discs have four
springs while the 312.5 mm disc has five springs.
The damper springs provide smoother torque transfer
and disc engagement.
FACING
MATERIAL
281 mm
(11 In.)
J9406-8
Fig. 2 V8 Engine Clutch Disc
CLUTCH COVER APPLICATION
Two clutch covers are used for all applications. The
281 mm cover (Fig. 5), is used for 3.9L, 5.2L and 5.9L
gas engine applications.
The 312.5 mm cover (Fig. 6), is used for 5.9L diesel
and VIO gas engine applications.
CLUTCH PEDAL POSITION SWITCH
All BR models are equipped with a clutch pedal po­
sition switch (Fig. 7). The switch is i n circuit with
the starter relay and is mounted on the clutch mas-