Jeep Cherokee 1999 Electronic Service Manual page 1258

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REM OVAL AN D I N STALLAT I ON (Cont inue d)
FUEL FILTER REMOVAL
(1) Dr a in a ll fu el a n d/or wa t er fr om fu el filt er /wa -
t er sepa r a t or a ssem bly. Refer t o t h e pr eviou s Dr a in -
in g Wa t er F r om F ilt er Bowl.
(2) Un plu g t h e elect r ica l con n ect or s a t bot t om of
pla st ic bowl.
(3) Rem ove pla st ic bowl fr om bot t om of fu el filt er
(u n scr ews).
(4) Rem ove fu el filt er fr om bot t om of filt er ba se
(u n scr ews).
FUEL FILTER INSTALLA TION
(1) Clea n bot t om of fu el filt er ba se.
(2) Apply clea n diesel fu el t o n ew fu el filt er ga sket .
(3) In st a ll a n d t igh t en filt er t o filt er ba se. Th e bev-
eled pa r t of t h e r u bber ga sket sh ou ld be fa cin g u p
t owa r ds t h e filt er ba se.
(4) Clea n t h e in side of bowl wit h a soa p a n d wa t er
m ixt u r e befor e in st a lla t ion . Ca r efu lly clea n a n y r esi-
du e bet ween t h e t wo m et a l pr obes a t t h e t op of t h e
wa t er –in –fu el sen sor. Do n ot u se ch em ica l clea n er s
a s da m a ge t o t h e pla st ic bowl m a y r esu lt .
(5) P ou r diesel fu el in t o t h e pla st ic bowl befor e
in st a llin g bowl t o bot t om of fu el filt er. Do t h is t o h elp
pr even t a ir fr om en t er in g fu el in ject ion pu m p wh ile
a t t em pt in g t o st a r t in g en gin e.
(6) In st a ll filt er bowl t o bot t om of filt er.
(7) In st a ll t h e elect r ica l con n ect or s a t bot t om of
bowl.
(8) Tigh t en t h e filt er –t o–m ou n t in g br a cket n u t s
(F ig. 26) t o 28 N·m (250 in . lbs.) t or qu e.
FUEL HEA TER
If t h e fu el h ea t er elem en t n eeds r epla cem en t , t h e
pla st ic filt er bowl a ssem bly m u st be r epla ced. Refer
t o F u el F ilt er /Wa t er Sepa r a t or for in for m a t ion .
FUEL HEA TER RELA Y
Th e fu el h ea t er r ela y is loca t ed in t h e P DC. F or
t h e loca t ion of t h e r ela y wit h in t h e P DC (F ig. 27),
r efer t o la bel on P DC cover.
FUEL LEVEL SENSOR
Th e fu el level sen sor is loca t ed on t h e side of t h e
fu el pu m p m odu le (F ig. 28).
REMOVAL
(1) Rem ove fu el t a n k. Refer t o F u el Ta n k Rem ova l/
In st a lla t ion .
(2) Rem ove fu el pu m p m odu le. Refer t o F u el P u m p
Modu le Rem ova l/In st a lla t ion .
(3) Rem ove elect r ica l wir e con n ect or a t sen din g
u n it t er m in a ls.
(4) P r ess on r elea se t a b (F ig. 29) t o r em ove sen d-
in g u n it fr om pu m p m odu le.
FUEL SYSTEM—2.5L DIESEL ENGINE
Fig. 27 Power Distribution Center (PDC) Location
Fig. 28 Fuel Level Sensor
FUEL INJECTION PUMP
REMOVAL
(1) Discon n ect t h e n ega t ive ba t t er y ca ble.
(2) Th or ou gh ly clea n t h e a r ea a r ou n d t h e in ject ion
pu m p a n d fu el lin es of a ll dir t , gr ea se a n d ot h er con -
t a m in a n t s. D u e to th e c lo s e in te rn a l to le ra n c e s
o f th e in je c tio n p u m p , th is s te p m u s t be p e r-
fo rm e d be fo re re m o v in g p u m p .
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