Jeep Cherokee 1999 Electronic Service Manual page 1205

14 - 14 FUEL SYSTEM
REM OVAL AN D I N STALLAT I ON (Cont inue d)
Fig. 21 Fuel Filter/Fuel Pressure Regulator
Fig. 22 Fuel Filter/Fuel Pressure Regulator Gasket
(6) Th e a r r ow (F ig. 21) m olded in t o t op of fu el
pu m p m odu le sh ou ld be poin t ed t owa r ds fr on t of
veh icle (12 o'clock posit ion ).
(7) Rot a t e filt er /r egu la t or u n t il fu el su pply t u be
(fit t in g) is poin t ed t owa r ds fr on t of veh icle (12 o'clock
posit ion ).
(8) In st a ll n ew r et a in er cla m p (cla m p sn a ps over
t op of filt er /r egu la t or a n d locks t o fla n ges on pu m p
m odu le).
(9) Con n ect fu el lin e a t filt er /r egu la t or. Refer t o
Qu ick-Con n ect F it t in gs in t h is gr ou p for pr ocedu r es.
(10) In st a ll fu el t a n k. Refer t o F u el Ta n k Rem ova l/
In st a lla t ion .
Fig. 23 Fuel Filter/Fuel Pressure Regulator O-Rings
FUEL PUMP MODULE
F u el t a n k r em ova l will be n ecessa r y for fu el pu m p
m odu le r em ova l.
REMOVAL
WARNING: THE FUEL SYSTEM IS UNDER A CON-
STANT PRESSURE EVEN WITH ENGINE OFF.
BEFORE SERVICING THE FUEL PUMP MODULE,
FUEL SYSTEM PRESSURE MUST BE RELEASED.
(1) Dr a in fu el t a n k a n d r em ove t a n k. Refer t o t h e
F u el Ta n k Rem ova l/In st a lla t ion sect ion of t h is gr ou p.
(2) Th or ou gh ly wa sh a n d clea n a r ea a r ou n d pu m p
m odu le t o pr even t con t a m in a n t s fr om en t er in g t a n k.
(3) Discon n ect fu el lin e a t filt er /r egu la t or. Refer t o
Qu ick-Con n ect F it t in gs in t h is gr ou p for pr ocedu r es.
(4) Th e pla st ic fu el pu m p m odu le lockn u t is
t h r ea ded on t o fu el t a n k (F ig. 24). In st a ll Specia l Tool
6856 t o fu el pu m p m odu le lockn u t a n d r em ove lock-
n u t (F ig. 25). Th e fu el pu m p m odu le will spr in g u p
wh en lockn u t is r em oved.
(5) Rem ove m odu le fr om fu el t a n k.
INSTALLA TION
CAUTION: Whenever fuel pump module is serviced,
module gasket must be replaced.
(1) Th or ou gh ly clea n lockn u t t h r ea ds a n d m a t in g
fu el t a n k t h r ea ds. Use a soa p/wa t er solu t ion . Do n ot
u se ca r bu r et or clea n er t o clea n t h r ea ds.
(2) Usin g a n ew ga sket , posit ion ga sket a n d fu el
pu m p m odu le in t o open in g in fu el t a n k.
(3) Apply clea n wa t er t o ga sket a n d lockn u t
t h r ea ds.
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