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CLUTCH
6 - 1
CLUTCH
C O N T E N T S
Page
Page
CLUTCH COMPONENT SERVICE . . . . . . . . . . . . 11
SERVICE DIAGNOSIS
2
GENERAL INFORMATION
1
G E N E R A L INFORMATION
INDEX
Page
Clutch Component Lubrication
1
Clutch Components
. . . . . . . . . . . . . . . . . . . . . . . .
1
CLUTCH COMPONENTS
MECHANICAL
COMPONENTS
The clutch mechanism i n A D models w i t h m a n u a l
transmission consists o f a single, dry-type c l u t c h disc
and a d i a p h r a g m style c l u t c h cover. T h e transmis-
sion i n p u t shaft is supported i n t h e crankshaft b y a
p i l o t bushing. A sleeve type release b e a r i n g i s used
to engage and disengage the c l u t c h pressure plate.
The release b e a r i n g i s operated b y a release fork i n
the clutch housing. The fork pivots o n a b a l l s t u d at-
tached t o the housing i n t e r i o r . The release f o r k i s ac-
tuated b y a h y d r a u l i c slave cylinder mounted i n the
housing. T h e slave cylinder is operated b y a clutch
master cylinder connected t o t h e c l u t c h pedal.
The c l u t c h disc has cushion springs i n the disc hub.
The c l u t c h disc facing i s r i v e t e d t o t h e h u b . T h e fac-
i n g is made
f r o m a non-asbestoes
m a t e r i a l . The
clutch cover pressure plate is a d i a p h r a g m type u n i t
w i t h a one-piece d i a p h r a g m s p r i n g a n d m u l t i p l e re-
lease fingers. T h e pressure plate release fingers are
preset d u r i n g manufacture a n d are n o t adjustable.
A 265 m m (10 i n ) diameter c l u t c h disc and clutch
cover pressure plate are used i n models w i t h 3.9L en-
gine and NP2500 transmission.
A 280 m m (11 i n ) diameter c l u t c h disc a n d clutch
cover pressure plate are used i n models w i t h a 3.9L,
5.2L, or 5.9L engine a n d a n A435 or A833 transmis-
sion.
HYDRAULIC
LINKAGE
COMPONENTS
A h y d r a u l i c l i n k a g e mechanism i s used for clutch
actuation. The l i n k a g e consists o f a remote reservoir,
clutch master cylinder, slave cylinder, and intercon-
necting f l u i d lines.
The master cylinder is connected t o t h e clutch
pedal a n d t h e slave cylinder i s connected t o t h e
clutch release fork. T h e c l u t c h master cylinder is
mounted o n t h e drivers side o f t h e dash panel adja-
Page
Clutch Linkage Fluid
1
cent to the brake master cylinder. The cylinder i s op-
erated b y a suspended type c l u t c h pedal.
CLUTCH LINKAGE FLUID
^
The clutch f l u i d reservoir, master cylinder, slave
cylinder and fluid lines are prefilled w i t h f l u i d a t t h e
factory d u r i n g assembly operations.
The h y d r a u l i c system should not require a d d i t i o n a l
f l u i d under n o r m a l circumstances. I n fact, the r e s e r -
v o i r f l u i d l e v e l w i l l a c t u a l l y i n c r e a s e as n o r m a l
c l u t c h w e a r o c c u r s . F o r t h i s r e a s o n , i t i s i m p o r -
t a n t to a v o i d o v e r f i l l i n g , o r r e m o v i n g f l u i d
from
the r e s e r v o i r .
I f inspection or diagnosis indicates additional f l u i d
m a y be needed, use Mopar brake fluid, or a n equiv-
alent meeting S A E and D O T standards J1703 a n d
D O T 3. Do not use any other type of fluid.
CLUTCH COMPONENT LUBRICATION
Proper clutch component l u b r i c a t i o n is i m p o r t a n t
to satisfactory operation. U s i n g the correct l u b r i c a n t
and avoiding overlubrication are also equally impor-
t a n t . D u r i n g service, apply recommended l u b r i c a n t
sparingly. Do not overlubricate as t h i s could r e s u l t i n
disc and pressure plate contamination.
C l u t c h components r e q u i r i n g l u b r i c a t i o n are: t h e
p i l o t bushing; release lever pivot b a l l ; release lever
contact surfaces; clutch disc h u b splines and c l u t c h
pedal pivot bore and bushings. Transmission compo-
nents r e q u i r i n g l u b r i c a t i o n are t h e : i n p u t
shaft
splines and p i l o t h u b and release bearing slide sur-
face o f t h e front bearing retainer. D o not apply
grease t o any p a r t o f the c l u t c h cover, disc, or release
bearing.
Use
Mopar
multi-purpose grease or a silicone
grease for the c l u t c h pedal bushings and pivot shaft.
Use Mopar H i g h Temperature Wheel Bearing Grease
or equivalent for a l l other c l u t c h l u b r i c a t i o n require-
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