Jeep Cherokee 1999 Electronic Service Manual page 1099

9 - 82 4.0L ENGINE
REM OVAL AN D I N STALLAT I ON (Cont inue d)
in (F ig. 45). Cou n t t h e n u m ber of ch a in pin s bet ween
t h e t im in g m a r ks of bot h spr ocket s. Th er e m u st be
21 pin s.
Fig. 45 Verify Crankshaft—Camshaft Installation—
(11) In st a ll t h e t im in g ch a in cover r efer t o t h e pr o-
cedu r e in t h is sect ion .
CRANKSHAFT MAIN BEARINGS
REMOVAL
(1) Discon n ect n ega t ive ca ble fr om ba t t er y.
(2) Rem ove t h e spa r k plu gs.
(3) Ra ise t h e veh icle.
(4) Rem ove t h e oil pa n a n d oil pu m p.
(5) Rem ove on ly on e m a in bea r in g ca p a n d lower
in ser t a t a t im e (F ig. 46).
(6) Rem ove t h e lower in ser t fr om t h e bea r in g ca p.
(7) Rem ove t h e u pper in ser t by LOOSE NING (DO
NOT RE MOVE ) a ll of t h e ot h er bea r in g ca ps. Now
in ser t a sm a ll cot t er pin t ool in t h e cr a n ksh a ft jou r-
n a l oil h ole. Ben d t h e cot t er pin a s illu st r a t ed t o fa b-
r ica t e t h e t ool (F ig. 47). Wit h t h e cot t er pin t ool in
pla ce, r ot a t e t h e cr a n ksh a ft so t h a t t h e u pper bea r-
in g in ser t will r ot a t e in t h e dir ect ion of it s lockin g
t a b. Beca u se t h er e is n o h ole in t h e No.3 m a in jou r-
n a l, u se a t on gu e depr essor or sim ila r soft -fa ced t ool
t o r em ove t h e bea r in g in ser t (F ig. 47). Aft er m ovin g
t h e in ser t a ppr oxim a t ely 25 m m (1 in ch ), it ca n be
r em oved by a pplyin g pr essu r e u n der t h e t a b.
(8) Usin g t h e sa m e pr ocedu r e descr ibed a bove,
r em ove t h e r em a in in g bea r in g in ser t s on e a t a t im e
for in spect ion .
Typical
Fig. 46 Removing Main Bearing Caps and Lower
Fig. 47 Removing Upper Inserts
INSTALLA TION
(1) Lu br ica t e t h e bea r in g su r fa ce of ea ch in ser t
wit h en gin e oil.
(2) Loosen a ll t h e m a in bea r in g ca ps. In st a ll t h e
m a in bea r in g u pper in ser t s.
(3) In st a ll t h e lower bea r in g in ser t s in t o t h e m a in
bea r in g ca ps.
Inserts
X J