9-10
Maintenance
Maintenance Under Severe Usage and Low Mileage Conditions
The following items must be serviced more frequently on cars mainly used under
severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and if necessary, adjust, correct, clean or replace
Maintenance itemMaintenance
operationMaintenance intervalsDriving
condition
Reduction gear fluidREvery 80,000 miles
(120,000 km)C, D, E, F, G,
H, I, J
Steering gear rack,
linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Front suspension ball
jointsIInspect more frequently
depending on the conditionC, D, E, F, G
Disc brakes and pads,
calipers and rotorsIInspect more frequently
depending on the conditionC, D, E, G, H
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F,
G, H, I , J
Climate control air filterRReplace more frequently
depending on the conditionC, E, G
Severe driving conditions
A. Repeatedly driving short distance of less than 5 miles (8 km) in normal temperature
or less than 10 miles (16 km) in freezing temperature
B. 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 heavy dust condition
F. Driving in heavy traffic area
G. Driving on uphill, downhill, or mountain roads repeatedly
H. Towing a trailer, or using a camper or roof rack
I. Driving as a patrol car, taxi, other commercial use or vehicle towing
J. Driving over 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions
9-33
09
Maximum loaded vehicle weight
The sum of curb weight; accessory
weight; vehicle capacity weight; and
production options weight.
Normal occupant weight
The number of occupants a vehicle
is designed to seat multiplied by 150
pounds (68 kg).
Occupant distribution
Designated seating positions.
Outward facing sidewall
An asymmetrical tire has a particular
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.
Pneumatic 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 previously considered in
curb weight or accessory weight,
including heavy duty breaks, ride
levelers, roof rack, heavy duty
battery, and special trim.
Recommended inflation pressure
Vehicle manufacturer’s
recommended tire inflation pressure
as 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 seated.
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.
