Jeep Cherokee 1999 Electronic Service Manual page 1056

X J
REM OVAL AN D I N STALLAT I ON (Cont inue d)
Fig. 46 Verify Sprocket—Chain Installation
(6) Tu r n t h e ch a in t en sion er lever t o t h e u n locked
(down ) posit ion (F ig. 45).
(7) In st a ll t h e oil slin ger.
(8) Repla ce t h e oil sea l in t h e t im in g ca se cover.
(9) In st a ll t h e t im in g ca se cover a n d ga sket .
(10) Wit h t h e key in ser t ed in t h e keywa y in t h e
cr a n ksh a ft , in st a ll t h e vibr a t ion da m per, wa sh er a n d
bolt . Lu br ica t e a n d t igh t en t h e bolt t o 108 N·m (80 ft .
lbs.) t or qu e.
(11) In st a ll t h e fa n a n d sh r ou d.
(12) Con n ect n ega t ive ca ble t o ba t t er y.
CAMSHAFT
REMOVAL
WARNING: THE COOLANT IN A RECENTLY OPER-
ATED ENGINE IS
RELEASE THE PRESSURE BEFORE REMOVING
THE DRAIN COCK, CAP AND DRAIN PLUGS.
(1) Discon n ect n ega t ive ca ble fr om ba t t er y.
(2) Dr a in t h e coolin g syst em . DO NOT wa st e r eu s-
a ble coola n t . If t h e solu t ion is clea n , dr a in it in t o a
clea n con t a in er for r eu se.
(3) Rem ove t h e r a dia t or or r a dia t or a n d con den ser,
if equ ipped wit h A/C.
(4) Scr ibe a m a r k on t h e dist r ibu t or h ou sin g in
lin e wit h t h e lip of t h e r ot or.
(5) Scr ibe a m a r k on t h e dist r ibu t or h ou sin g n ea r
t h e cla m p a n d con t in u e t h e scr ibe m a r k on t h e cylin -
der block in lin e wit h t h e dist r ibu t or m a r k.
HOT AND PRESSURIZED.
(6) F or ea se of in st a lla t ion , n ot e t h e posit ion of t h e
r ot or a n d dist r ibu t or h ou sin g in r ela t ion t o a dja cen t
en gin e com pon en t s.
(7) Rem ove t h e dist r ibu t or a n d ign it ion wir es.
(8) Rem ove t h e en gin e cylin der h ea d cover.
(9) Rem ove t h e r ocker a r m s, br idges a n d pivot s.
(10) Rem ove t h e pu sh r ods.
(11) Rem ove t h e h ydr a u lic va lve t a ppet s fr om t h e
en gin e cylin der h ea d.
(12) Rem ove t h e vibr a t ion da m per.
(13) Rem ove t h e t im in g ca se cover.
(14) Rem ove t h e t im in g ch a in a n d spr ocket s.
(15) Rem ove t h e ca m sh a ft (F ig. 47).
Fig. 47 Camshaft
INSTALLA TION
(1) In spect t h e ca m lobes for wea r.
(2) In spect t h e bea r in g jou r n a ls for u n even wea r
pa t t er n or fin ish .
(3) In spect t h e bea r in gs for wea r.
(4) In spect t h e dist r ibu t or dr ive gea r for wea r.
(5) If t h e ca m sh a ft a ppea r s t o h a ve been r u bbin g
a ga in st t h e t im in g ca se cover, exa m in e t h e oil pr es-
su r e r elief h oles in t h e r ea r ca m jou r n a l. Th e oil
pr essu r e r elief h oles m u st be fr ee of debr is.
(6) Lu br ica t e t h e ca m sh a ft wit h Mopa r E n gin e Oil
Su pplem en t , or equ iva len t .
(7) Ca r efu lly in st a ll t h e ca m sh a ft t o pr even t da m -
a ge t o t h e ca m sh a ft bea r in gs (F ig. 47).
(8) Tu r n t h e t en sion er lever t o t h e u n locked (down )
posit ion (F ig. 48).
(9) P u ll t h e t en sion er block t owa r d t h e t en sion er
lever t o com pr ess t h e spr in g. H old t h e block a n d t u r n
t h e t en sion er lever t o t h e lock posit ion (F ig. 48).
(10) In st a ll t h e t im in g ch a in , cr a n ksh a ft spr ocket
a n d ca m sh a ft spr ocket
a lign ed.
(11) In st a ll t h e ca m sh a ft spr ocket r et a in in g bolt
a n d wa sh er. Tigh t en t h e bolt t o 108 N·m (80 ft . lbs.)
t or qu e.
2.5L ENGINE 9 - 39
wit h t h e t im in g m a r ks