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LUBRICATION AND MAINTENANCE
•
SPARK PLUGS
Replace t h e spark p l u g s (Fig. 10) a t the mileage or
time i n t e r v a l specified i n t h e L u b r i c a t i o n and M a i n -
tenance Schedule. Refer t o Group 8D, a n d t h e O w n -
er's M a n u a l provided w i t h t h e vehicle for additional
information.
E N G I N E
SPARK
SPARK
TORQUE
PLUG
PLUG GAP
3.9L
RN12YC
0.9 mm
41 Nm
5.2L
0.035 in
30 ft lb
5.9L
5.9L
J9000-54
Fig. 10 Spark Plug Replacement
IGNITION TIMING
Check a n d adjust t h e i g n i t i o n t i m i n g (and cam t i m -
ing on t h e 2.5L Engine) according t o specifications
shown o n t h e Engine Emission C o n t r o l I n f o r m a t i o n
Label, located i n t h e engine compartment.
BATTERY
A l l vehicles are equipped w i t h
maintenance-free
batteries ( F i g . 11). A maintenance-free batterie has
no removable battery cell caps. Water n e v e r needs
to b e a d d e d to a m a i n t e n a n c e - f r e e b a t t e r y . S m a l l
vent holes i n t h e cover allow t h e gases t h a t are pro-
duced to escape. A special chemical composition i n -
side t h e b a t t e r y reduces production o f gas t o a n
extremely s m a l l a m o u n t a t n o r m a l c ha rg i ng volt-
ages.
The b a t t e r y contains a V i s u a l T e s t I n d i c a t o r .
When a n adequate charge level exists t h e indicator
is G R E E N . W h e n c h a r g i n g is required t h e indicator
is R E D or B L A C K . W h e n replacement is required
the indicator is Y E L L O W .
VACUUM OPERATED EMISSION CONTROL
COMPONENTS
Replace these components a t t h e t i m e or mileage
intervals indicated i n t h e L u b r i c a t i o n a n d M a i n t e -
nance Schedules. Refer t o Group 25, Emission Con-
trol System for more i n f o r m a t i o n .
RUBBER AND PLASTIC COMPONENT INSPECTION
Variables such as type of vehicle service, geo-
graphic area o f vehicle operation, a n d l e n g t h o f expo-
sure t i m e t o heat a n d contaminants are factors
affecting t h e life of r u b b e r a n d plastic components.
INCREASED
SEALED
TEST
ELECTROLITE
VENT CAPS
INDICATOR
ENVELOPE
HOLD DOWN
SEPARATORS
RK92
Fig. 11 Maintenance
Free
Battery
To provide best vehicle performance a n d avoid a d -
verse effect o n component life, i t is recommended
t h a t t h e f o l l o w i n g components be inspected w h e n
p e r f o r m i n g other under hood services.
C o m p o n e n t s
s h o u l d b e r e p l a c e d i m m e d i a t e l y i f t h e r e i s a n y
e v i d e n c e o f d e g r a d a t i o n t h a t c o u l d r e s u l t i n f a i l -
u r e .
HOSES (EXCEPT
EMISSION
HOSES)
R e f e r t o G r o u p 25, E m i s s i o n s C o n t r o l S y s t e m s
f o r i n s p e c t i o n o f e m i s s i o n hoses.
Inspect surface o f hoses and n y l o n t u b i n g for evi-
dence o f heat a n d mechanical damage. H a r d a n d
b r i t t l e rubber, cracking, checking, tears, cuts, abra-
sion a n d excessive swelling indicate deterioration o f
the rubber. Hose a n d n y l o n t u b i n g located close t o
the exhaust m a n i f o l d or any source of intense heat
should receive special attention. Be certain t h a t n y -
lon t u b i n g i n these areas is not melted or collapsed.
Inspect hose r o u t i n g t o ensure hose does n o t come
i n contact w i t h any heat source or m o v i n g component
w h i c h w i l l cause heat damage or mechanical wear.
Inspect a l l hose connections such as clamps a n d
couplings t o m a k e sure they are secure a n d no leaks
are present. I n m a n y i n s t a n c e s , f l u i d s s u c h as o i l ,
p o w e r s t e e r i n g f l u i d a n d b r a k e f l u i d a r e u s e d
d u r i n g a s s e m b l y o f hoses t o c o u p l i n g s . T h e r e -
f o r e , o i l w e t n e s s a t t h e h o s e - c o u p l i n g a r e a i s n o t
n e c e s s a r i l y a n i n d i c a t i o n o f l e a k a g e . A c t u a l d r i p -
p i n g o f h o t f l u i d w h e n systems are under pressure
( d u r i n g vehicle
operation), should be noted a n d
clamps t i g h t e n e d before hose i s replaced based o n
leakage.
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