Jeep Cherokee 1999 Electronic Service Manual page 1154

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REM OVAL AN D I N STALLAT I ON (Cont inue d)
Fig. 69 Crankshaft and Carrier Bearing Assembly
Fig. 70 Main Bearing Support Alignment
(15) P osit ion t h e flywh eel a n d O-r in g on cr a n k-
sh a ft a n d a lign bolt h oles.
NOTE: For purposes of checking crankshaft end
play, used flywheel bolts may be used. Final assem-
bly requires new flywheel bolts.
(16) In st a ll 2 flywh eel bolt s, 180° a pa r t , a n d
t igh t en bolt s t o 20 N·m plu s 60° (15 ft . lbs.) plu s 60°.
(17) At t a ch dia l in dica t or t o en gin e block.
(18) Move cr a n ksh a ft t owa r d fr on t of en gin e a n d
zer o in dica t or.
(19) Move cr a n ksh a ft t owa r d t h e r ea r of en gin e
a n d r ecor d m ea su r em en t .
(20) Su bt r a ct specified cr a n ksh a ft en d pla y fr om
figu r e obt a in ed. Cr a n ksh a ft en d pla y .153 t o .304m m
(.0060 t o .0119 in .).
(21) Select t h r u st wa sh er s wh ich will give cor r ect
en d pla y.
(22) Rem ove t ools a n d flywh eel.
(23) Lu br ica t e t h r u st wa sh er h a lves a n d fit t h em
in t o t h e r ea r m a in bea r in g ca r r ier.
(24) E n su r e t h a t cr a n ksh a ft en d a n d flywh eel m a t -
in g su r fa ces a r e clea n a n d dr y. In st a ll ''O'' r in g in fly-
wh eel gr oove.
(25) To ver ify cor r ect en d pla y, in st a ll 2 flywh eel
bolt s 180° a pa r t , a n d t igh t en bolt s t o 20 N·m plu s 60°
(15 ft . lbs. plu s 60°).
(26) Mea su r e cr a n ksh a ft en d pla y wit h a dia l
ga u ge. Cr a n ksh a ft en d pla y sh ou ld n ot exceed .153 t o
.304m m (.0060 t o .0119 in .) (F ig. 71).
Fig. 71 Measuring Crankshaft End Play
CAUTION: Use NEW flywheel bolts for the following
procedure.
(27) In st a ll a n ew O-r in g on flywh eel. In st a ll fly-
wh eel on cr a n ksh a ft . Th e 6 flywh eel bolt s m u st be
t igh t en ed a s follows:
a . Lu br ica t e a n d in st a ll t h e 6 n ew flywh eel bolt s.
b. Tor qu e t h e 6 flywh eel bolt s t o 49 N·m (36 ft .
lbs.) st a r t in g on e bolt a n d followin g wit h t h e opposit e
on e (cr oss t igh t en in g) u n t il com plet ion , in a clockwise
dir ect ion ..
c. Loosen on e bolt a t a t im e a n d t igh t en t o 19.6
N·m (14 ft . lbs.) plu s 75° u sin g t h e cr oss t igh t en in g
m et h od.
(28) In st a ll t h e pist on s a n d con n ect in g r od a ssem -
blies. Refer t o pist on a n d con n ect in g r ods r em ova l
a n d in st a lla t ion in t h is sect ion .
ENGINE 9 - 41