Jeep Cherokee 1999 Electronic Service Manual page 1048

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REM OVAL AN D I N STALLAT I ON (Cont inue d)
INSTALLA TION
(1) Clea n t h e in t a ke a n d en gin e exh a u st m a n ifolds
a n d cylin der h ea d m a t in g su r fa ces. D O N OT a llo w
fo re ig n m a te ria l to e n te r e ith e r th e in ta k e m a n -
ifo ld o r th e p o rts in th e c y lin d e r h e a d .
(2) In st a ll a n ew in t a ke m a n ifold ga sket over t h e
a lign m en t dowels on t h e cylin der h ea d.
(3) In st a ll t h e en gin e exh a u st m a n ifold a ssem bly.
Ex h a u s t m a n ifo ld m u s t be c e n tra lly lo c a te d
o v e r th e e n d s tu d s a n d s p a c e r (F ig . 29).
(4) Tigh t en bolt No.1 t o 41 N·m (30 ft . lbs.) t or qu e
(F ig. 29).
(5) In st a ll t h e in t a ke m a n ifold on t h e cylin der
h ea d dowels (F ig. 29).
(6) In st a ll bolt s 2 t h r ou gh 5 (F ig. 29). Tigh t en
t h ese bolt s t o 31 N·m (23 ft . lbs.) t or qu e.
(7) In st a ll n ew en gin e exh a u st m a n ifold spa cer s
over t h e en gin e exh a u st m a n ifold m ou n t in g st u ds in
t h e cylin der h ea d (F ig. 29).
(8) Tigh t en n u t s 6 a n d 7 t o 31 N·m (23 ft . lbs.)
t or qu e (F ig. 29).
(9) In st a ll a ll com pon en t s t o t h e in t a ke m a n ifold.
(10) Ra ise t h e veh icle.
(11) Con n ect t h e exh a u st pipe t o t h e en gin e
exh a u st m a n ifold. Tigh t en t h e bolt s t o 31 N·m (23 ft .
lbs.) t or qu e.
(12) Lower t h e veh icle.
(13) Con n ect t h e ba t t er y n ega t ive ca ble.
(14) St a r t t h e en gin e a n d ch eck for lea ks.
CYLINDER HEAD COVER
A cu r ed ga sket is pa r t of t h e en gin e cylin der h ea d
cover.
REMOVAL
(1) Discon n ect n ega t ive ca ble fr om ba t t er y.
(2) Discon n ect t h e Cr a n kca se Ven t ila t ion (CCV)
va cu u m h ose fr om en gin e cylin der h ea d cover (F ig.
30).
(3) Discon n ect t h e fr esh a ir in let h ose fr om t h e
en gin e cylin der h ea d cover (F ig. 30).
(4) Rem ove t h e en gin e cylin der h ea d cover m ou n t -
in g bolt s.
(5) Rem ove t h e en gin e cylin der h ea d cover.
(6) Rem ove a n y or igin a l sea ler fr om t h e cover sea l-
in g su r fa ce of t h e en gin e cylin der h ea d a n d clea n t h e
su r fa ce u sin g a fa br ic clea n er.
(7) Rem ove a ll r esidu e fr om t h e sea lin g su r fa ce
u sin g a clea n , dr y clot h .
INSTALLA TION
(1) In spect t h e en gin e cylin der h ea d cover for
cr a cks. Repla ce t h e cover, if cr a cked.
NOTE: The original dark grey gasket material
should NOT be removed. If sections of the gasket
Fig. 30 Engine Cylinder Head Cover
material are missing or are compressed, replace the
engine cylinder head cover. However, sections with
minor damage such as small cracks, cuts or chips
may be repaired with a hand held applicator. The
new material must be smoothed over to maintain
gasket height. Allow the gasket material to cure
prior to engine cylinder head cover installation.
(2) If a r epla cem en t cover is in st a lled, t r a n sfer t h e
CCV va lve gr om m et t h e oil filler ca p fr om t h e or igi-
n a l cover t o t h e r epla cem en t cover.
(3) In st a ll en gin e cylin der h ea d cover. Tigh t en t h e
m ou n t in g bolt s t o 13 N·m (115 in . lbs.) t or qu e.
(4) Con n ect t h e CCV h oses (F ig. 30).
(5) Con n ect n ega t ive ca ble t o ba t t er y.
ROCKER ARMS AND PUSH RODS
Th is pr ocedu r e ca n be don e wit h t h e en gin e in or
ou t of t h e veh icle.
REMOVAL
(1) Rem ove t h e en gin e cylin der h ea d cover. (Refer
t o pr ocedu r e in t h is sect ion )
(2) Ch eck for r ocker a r m br idges wh ich a r e ca u s-
in g m isa lign m en t of t h e r ocker a r m t o va lve t ip a r ea .
(3) Rem ove t h e ca pscr ews a t ea ch br idge a n d pivot
a ssem bly (F ig. 31). Alt er n a t ely loosen t h e ca pscr ews
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.
(4) Rem ove t h e br idges, pivot s a n d cor r espon din g
pa ir s of r ocker a r m s (F ig. 31). P la ce t h em on a ben ch
in t h e sa m e or der a s r em oved.
(5) Rem ove t h e pu sh r ods a n d pla ce t h em on a
ben ch in t h e sa m e or der a s r em oved.
2.5L ENGINE 9 - 31