719
Maintenance
MAINTENANCE UNDER SEVERE USAGE CONDITIONS
SEVERE DRIVING CONDITIONS
A - Repeatedly driving short distance of less than 5 miles (8 km) innormal temperature or less than 10 miles (16 km) in freezing tem-
perature
B - Extensive engine idling or low speed driving for long distances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather E - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C)
G - Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle tow-
ing
J - Driving over 106 mph (170 km/h)
K - Frequently driving in stop-and-go conditions
The following items must be serviced more frequently on cars normally used under severe driving conditions. Refer
to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and, after inspection, clean, adjust, repair or replace if neces\
sary
MAINTENANCE ITEMMAINTENANCE
OPERATIONMAINTENANCE INTERVALSDRIVING CONDITION
ENGINE OIL AND FILTERREVERY 3,750 MILES (7,500 KM) OR 6 MONTHSA, B, C, D, E, F, G, H, I, J,K, L
AIR CLEANER FILTERRMORE FREQUENTLYC, E
SPARK PLUGSRMORE FREQUENTLYA, B, H, I, K
AUTOMATIC TRANSMISSION FLUIDREVERY 60,000 MILES (96,000 KM)C, D, E, G, H, I, J
MANUAL TRANSMISSION FLUIDREVERY 75,000 MILES (120,000 KM)C, D, E, G, H, I, J
BRAKE/PADS, CALIPERS AND ROTORSIMORE FREQUENTLYC, D, E, F, G
REAR DISC BRAKE/PAD, PARKING BRAKEIMORE FREQUENTLYC, D, E, G, H
STEERING GEAR BOX, LINKAGE & BOOTS/
LOWER ARM BALL JOINT, UPPER ARM BALL JOINTIMORE FREQUENTLYC, D, E, F, G, H, I
DRIVE SHAFTS AND BOOTSIMORE FREQUENTLYC, D, E, F
REAR DIFFERENTIAL OIL REVERY 75,000 MILES (120,000 KM)C, E, G, H, I, J
CLIMATE CONTROL AIR FILTER
(FOR EVAPORATOR AND BLOWER UNIT)RMORE FREQUENTLYC, E
PROPELLER SHAFTIEVERY 7,500 MILES (12,000 KM) OR 6 MONTHSC, E
Maintenance
52
7
Outward Facing Sidewall : The side
of a asymmetrical tire that has a par-
ticular side that faces outward when
mounted on a vehicle. The outward
facing sidewall bears white lettering
or bears manufacturer, brand, and/or
model name molding that is higher or
deeper than the same moldings on
the inner facing sidewall.
Passenger (P-Metric) Tire : A tire
used on passenger cars and some
light duty trucks and multipurpose
vehicles.
Ply: A layer of rubber-coated parallel
cords
Pneumatic tire: A mechanical device
made of rubber, chemicals, fabric and
steel or other materials, that, when
mounted on an automotive wheel
provides the traction and contains the
gas or fluid that sustains the load.
Production options weight : The
combined weight of installed regular
production options weighing over 5
lb.(2.3 kg) in excess of the standard
items which they replace, not previ-
ously considered in curb weight or
accessory weight, including heavy
duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim. Recommended Inflation Pressure
:
Vehicle manufacturer's recommend-
ed tire inflation pressure and shown
on the tire placard.
Radial Ply Tire : A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim: A metal support for a tire and
upon which the tire beads are seat-
ed.
Sidewall: The portion of a tire
between the tread and the bead.
Speed Rating: An alphanumeric
code assigned to a tire indicating the
maximum speed at which a tire can
operate.
Traction: The friction between the
tire and the road surface. The
amount of grip provided.
Tread: The portion of a tire that
comes into contact with the road.
Treadwear Indicators: Narrow
bands, sometimes called "wear
bars", that show across the tread of a
tire when only 2/32 inch of tread
remains. UTQGS: Uniform Tire Quality
Grading Standards, a tire information
system that provides consumers with
ratings for a tire's traction, tempera-
ture and treadwear. Ratings are
determined by tire manufacturers
using government testing proce-
dures. The ratings are molded into
the sidewall of the tire.
Vehicle Capacity Weight
: The num-
ber of designated seating positions
multiplied by 150 lbs. (68 kg) plus the
rated cargo and luggage load.
Vehicle Maximum Load on the
Tire: Load on an individual tire due to
curb and accessory weight plus
maximum occupant and cargo
weight.
Vehicle Normal Load on the Tire :
Load on an individual tire that is
determined by distributing to each
axle its share of the curb weight,
accessory weight, and normal occu-
pant weight and dividing by 2.
Vehicle Placard: A label permanent-
ly attached to a vehicle showing the
original equipment tire size and rec-
ommended inflation pressure.
