Chrysler 1998 Viper RT/10 Owner's Manual page 661

S R 8.0L ENGINE 9 - 1 5
S E R V I C E P R O C E D U R E S ( C o n t i n u e d )
MAIN B E A R I N G C A P
C R O S S B O L T S
SPECIAL
TOOL C-3059
ii
r v
i
If
0
80a3cca5
Fig. 8 Main Bearing Cap identification
OIL GROOVES
UPPER
B E A R I N G S
LOWER
B E A R I N G S
6 9309-55
Fig. 9 Main Bearing identification
CRANKSHAFT MAIN BEARINGS-
CRANKSHAFT NOT REMOVED
Bearing caps are not interchangeable and should
be marked at removal to insure correct assembly.
(Fig. 8) Upper and lower bearing halves are N O T
interchangeable. Lower m a i n bearing halves of 1, 2,
4, 5 and 6 are interchangeable. Upper m a i n bearing
halves of 1, 2, 4, 5 and 6 are interchangeable.
(1) Remove the oil pan and windage tray, identify
bearing caps before removal.
(2) Remove bearing caps one at a time. Remove
upper h a l f of bearing by inserting Special M a i n Bear-
i n g Tool C-3059 (Fig. 10) into the o i l hole of crank-
shaft.
(3) Slowly rotate crankshaft clockwise, forcing out
upper h a l f of bearing shell.
BEARI N G
9209-59
Fig. 10 Upper Main Bearing Removing and Installing
With Special Tool C-3059
C A U T I O N : W h e n c l e a n i n g t h e g a s k e t s u r f a c e s u s e
a g a s k e t r e m o v e r to s o f t e n t h e old g a s k e t material.
A l s o , to a v o i d d a m a g e to t h e m a t i n g s u r f a c e s , d o
not u s e a metal s c r a p e r . I n s t e a d u s e a p l a s t i c o r
w o o d e n s c r a p e r .
INSTALLATION
N O T E : O n l y o n e m a i n b e a r i n g s h o u l d be s e l e c -
tively fitted w h i l e all other m a i n b e a r i n g c a p s a r e
properly t i g h t e n e d .
When i n s t a l l i n g a new upper bearing shell, slightly
chamfer the sharp edges from the p l a i n side.
(1) Start bearing i n place, and insert M a i n Bearing
Tool C-3059 into oil hole of crankshaft (Fig. 10).
(2) Slowly rotate crankshaft counterclockwise slid-
i n g the bearing into position. Remove Special M a i n
Bearing Tool C-3059.
(3) I n s t a l l each m a i n cap and t i g h t e n bolts finger
tight.
(4) Tighten m a i n cap bolts i n the following torque
sequence:
(5) S t e p 1 Tighten only the center m a i n caps bolts
i n the sequence order shown i n (Fig. 11) to 20 N - m
(15 ft. lbs.). This w i l l seat the bearing caps onto the
engine block.
(6) S t e p 2 To ensure correct t h r u s t bearing align-
ment the following procedure must be done:
(7) Move crankshaft a l l the way to the rear of its
travel.
(8) Then, move crankshaft all the way to the front
of its travel.
(9) Wedge an appropriate tool between the rear of
the cylinder block and rear crankshaft counter-
weight. This w i l l hold the crankshaft i n it's most for-
w a r d position.