Miles 18,000 21,000 24,000 27,000 30,000
(Kilometers) (29 000) (34 000) (38 000) (43 000) (48 000)
Change engine oil and engine oil filter. X X X X X
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.
XXX
Change rear axle fluid. X
Change front axle fluid (4X4). X
Check transfer case fluid level (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary.
X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. X*
Drain and refill automatic tranmission fluid and
change main sump filter (45RFE/545RFE only).
X
SCHEDULE “B” 389
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S
