Jeep 2004 Wrangler Owner's Manual page 277

Miles
(Kilometers)
[Months]
Change the engine oil and engine oil filter.
Inspect the engine air filter element, and replace if nec-
essary.
Inspect the PCV Valve, and replace if necessary.
Replace the spark plugs.
Lubricate the steering linkage joints and outer tie rod
ends.
Lubricate the steering and suspension ball joints.
Inspect the brake linings.
Inspect the drive belt, and replace as needed. Not re-
quired if previously replaced.
Flush and replace the engine coolant if not done at 60
months.
Inspect the transfer case fluid.
84,000 90,000
(134 000) (144 000)
[84] [90]
X X
X
X
X
X X
X
X
X
X
M
SCHEDULE "A" 277
A
I
96,000 102, 000
N
T
(154 000) (163 000)
E
[96] [102]
N
A
X X
N
C
E
S
C
H
X X
E
D
U
X
L
E
S
X
8
X