Jeep Cherokee 1999 Electronic Service Manual page 1095

9 - 78 4.0L ENGINE
REM OVAL AN D I N STALLAT I ON (Cont inue d)
INSTALLA TION
It is n ot n ecessa r y t o ch a r ge t h e t a ppet s wit h
en gin e oil. Th ey will ch a r ge t h em selves wit h in a ver y
sh or t per iod of en gin e oper a t ion .
(1) Dip ea ch t a ppet in Mopa r E n gin e Oil Su pple-
m en t , or equ iva len t .
(2) Use H ydr a u lic Va lve Ta ppet Rem ova l/In st a lla -
t ion Tool t o in st a ll ea ch t a ppet in t h e sa m e bor e fr om
wh er e it wa s or igin a lly r em oved.
(3) In st a ll t h e cylin der h ea d a ssy (Refer t o cylin der
h ea d r &i in t h is sect ion ).
(4) In st a ll t h e pu sh r ods in t h eir or igin a l loca t ion s.
(5) In st a ll t h e r ocker a r m s a n d br idge a n d pivot
a ssem blies a t t h eir or igin a l loca t ion s. Loosely in st a ll
t h e ca pscr ews a t ea ch br idge.
(6) Tigh t en t h e ca pscr ews a lt er n a t ely, on e t u r n a t
a t im e, t o a void da m a gin g t h e br idges. Tigh t en t h e
ca pscr ews t o 28 N·m (21 ft . lbs.) t or qu e.
(7) P ou r t h e r em a in in g Mopa r E n gin e Oil Su pple-
m en t , or equ iva len t over t h e en t ir e va lve a ct u a t in g
a ssem bly. Th e Mopa r E n gin e Oil Su pplem en t , or
equ iva len t m u st r em a in wit h t h e en gin e oil for a t
lea st 1 609 km (1,000 m iles). Th e oil su pplem en t
n eed n ot be dr a in ed u n t il t h e n ext sch edu led oil
ch a n ge.
(8) In st a ll t h e en gin e cylin der h ea d cover.
VIBRA TION DAMPER
REMOVAL
(1) Discon n ect n ega t ive ca ble fr om ba t t er y.
(2) Rem ove t h e ser pen t in e dr ive belt a n d fa n
sh r ou d.
(3) Rem ove t h e vibr a t ion da m per r et a in in g bolt
a n d wa sh er.
(4) Use Vibr a t ion Da m per Rem ova l Tool 7697 t o
r em ove t h e da m per fr om t h e cr a n ksh a ft (F ig. 38).
Fig. 38 Vibration Damper Removal Tool 7697
INSTALLA TION
(1) Apply Mopa r Silicon e Ru bber Adh esive Sea la n t
t o t h e keywa y in t h e cr a n ksh a ft a n d in ser t t h e key.
Wit h t h e key in posit ion , a lign t h e keywa y on t h e
vibr a t ion da m per h u b wit h t h e cr a n ksh a ft key a n d
t a p t h e da m per on t o t h e cr a n ksh a ft .
(2) In st a ll t h e vibr a t ion da m per r et a in in g bolt a n d
wa sh er.
(3) Tigh t en t h e da m per r et a in in g bolt t o 108 N·m
(80 ft . lbs.) t or qu e.
(4) In st a ll t h e ser pen t in e dr ive belt a n d t igh t en t o
t h e specified t en sion (r efer t o Gr ou p 7, Coolin g Sys-
t em s for t h e pr oper specifica t ion s a n d pr ocedu r es).
(5) Con n ect n ega t ive ca ble t o ba t t er y.
TIMING CASE COVER
REMOVAL
(1) Discon n ect n ega t ive ca ble fr om ba t t er y.
(2) Rem ove t h e vibr a t ion da m per.
(3) Rem ove t h e fa n a n d h u b a ssem bly a n d r em ove
t h e fa n sh r ou d.
(4) Rem ove t h e a ccessor y dr ive br a cket s t h a t a r e
a t t a ch ed t o t h e t im in g ca se cover.
(5) Rem ove t h e A/C com pr essor (if equ ipped) a n d
gen er a t or br a cket a ssem bly fr om t h e en gin e cylin der
h ea d a n d m ove t o on e side.
(6) Rem ove t h e oil pa n -t o-t im in g ca se cover bolt s
a n d t im in g ca se cover-t o-cylin der block bolt s.
(7) Rem ove t h e t im in g ca se cover a n d ga sket fr om
t h e en gin e.
(8) P r y t h e cr a n ksh a ft oil sea l fr om t h e fr on t of t h e
t im in g ca se cover (F ig. 39).
Fig. 39 Timing Case Cover Components
INSTALLA TION
Clea n t h e t im in g ca se cover, oil pa n a n d cylin der
block ga sket su r fa ces.
(1) In st a ll a n ew cr a n ksh a ft oil sea l in t h e t im in g
ca se cover. Th e open en d of t h e sea l sh ou ld be t owa r d
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