Jeep Cherokee 1999 Electronic Service Manual page 1039

9 - 22 2.5L ENGINE
SERV I CE PROCEDU RES (Cont inue d)
(6) In st a ll bea r in g ca p a n d con n ect in g r od on t h e
jou r n a l a n d t igh t en n u t s t o 45 N·m (33 ft . lbs.)
t or qu e. DO NOT r ot a t e cr a n ksh a ft . P la st iga ge will
sm ea r, r esu lt in g in in a ccu r a t e in dica t ion .
(7) Rem ove t h e bea r in g ca p a n d det er m in e a m ou n t
of bea r in g-t o-jou r n a l clea r a n ce by m ea su r in g t h e
widt h of com pr essed P la st iga ge (F ig. 17). Refer t o
E n gin e Specifica t ion s for t h e pr oper clea r a n ce. P la s -
tig a g e s h o u ld in d ic a te
a c ro s s th e e n tire w id th o f th e in s e rt. If th e
c le a ra n c e v a rie s , it m a y be c a u s e d by e ith e r a
ta p e re d jo u rn a l, be n t c o n n e c tin g ro d o r fo re ig n
m a te ria l tra p p e d be tw e e n th e in s e rt a n d c a p o r
ro d .
(8) If t h e cor r ect clea r a n ce is in dica t ed, r epla ce-
m en t of t h e bea r in g in ser t s is n ot n ecessa r y. Rem ove
t h e P la st iga ge fr om cr a n ksh a ft jou r n a l a n d bea r in g
in ser t . P r oceed wit h in st a lla t ion .
(9) If bea r in g-t o-jou r n a l clea r a n ce exceeds t h e
specifica t ion , in st a ll a pa ir of 0.0254 m m (0.001 in ch )
u n der size bea r in g in ser t s. All t h e odd size in ser t s
m u st be on t h e bot t om . Th e sizes of t h e ser vice
r epla cem en t bea r in g in ser t s a r e st a m ped on t h e
ba cks of t h e in ser t s. Mea su r e t h e clea r a n ce a s
descr ibed in t h e pr eviou s st eps.
CRANKSHAFT JOURNAL
Color Code
Yellow
Orange
Blue
Red
th e s a m e c le a ra n c e
CON N ECT I N G ROD BEARI N G FI T T I N G CH ART
Diameter
53.2257-53.2079 mm
(2.0955-2.0948 in.)
53.2079 - 53.1901 mm
(2.0948 - 2.0941 in.)
0.0178 mm (0.0014 in.)
Undersize
53.1901 - 53.1724 mm
(2.0941 - 2.0934 in.)
0.0356 mm (0.0014 in.)
Undersize
52.9717 - 52.9539 mm
(2.0855 - 2.0848 in.)
0.254 mm (0.010 in.)
Undersize
Fig. 17 Measuring Bearing Clearance with
(10) Th e clea r a n ce is m ea su r ed wit h a pa ir of
0.0254 m m (0.001 in ch ) u n der size bea r in g in ser t s
in st a lled. Th is will det er m in e if t wo 0.0254 m m
(0.001 in ch ) u n der size in ser t s or a n ot h er com bin a t ion
is n eeded t o pr ovide t h e cor r ect clea r a n ce (r efer t o
Con n ect in g Rod Bea r in g F it t in g Ch a r t ).
CORRESPONDING CONNECTING ROD BEARING INSERT
Upper Insert Size
Yellow - Standard
Yellow - Standard
Blue - Undersize
0.025 mm (0.001 in.)
Red - Undersize
0.254 mm (0.010 in.)
Plastigage
Lower Insert Size
Yellow - Standard
Blue - Undersize
0.025 mm (0.001 in.)
Blue - Undersize
0.025 mm (0.001 in.)
Red - Undersize
0.254 mm (0.010 in.)
X J