MAINTENANCE, LUBRICATION AND SERVICE
TIRES, WHEELS AND HUB
Inspection
Inspect your tires daily. Look for bulges,
cracks, cuts, penetrations and/or oil
contamination. Also, check for uneven
wear. If damage is found, have a
qualied mechanic thoroughly inspect
the tires, front end components and
alignment. Replace or discard any
damaged tires or components.
Tire Manufacturer Information
More detailed information can be
obtained by referring to each tire
manufacturer's documentation.
Documentation can be obtained either
from the Internet or directly from the
manufacturer.
Technical data provided includes:
• High-speed or low-speed ratings
• Repair, retreading and regrooving
• Use of tire chains
• Mixing radial and bias tires on the
same vehicle
• Tire mounting/dismounting
Oil Contamination of Tires
Lubricating oils, fuel oil, gasoline and
other petroleum derivatives, can soften
the rubber and destroy the tire.
Preventive maintenance is necessary to
ensure that oil leakage does not occur.
Inspect the following areas on a regular
basis:
• Axle end seals
• Engine seals
• Transmission seals
• Drive axle seals
• Oil lters
• Oil and hydraulic lines (if equipped)
Refer to specic tire manufacturer's
books, or to the vehicle certication
label, for additional information
concerning tires and their care.
Wheels
DANGER
DO NOT use oil or grease on studs or
nuts. The tightening torque is affected and
can lead to incorrect clamping loads
between the rim and hub. This could lead
to a loss of the wheel. Loss of vehicle
control and serious personal injury or
death can occur.
DANGER
Before checking the wheels, set the
parking brakes, place the transmission in
neutral and chock the wheels. Failure to
do so can result in unexpected vehicle
movement and can cause serious
personal injury or death.
DANGER
DO NOT use mismatched wheel
components. If they do not exactly match
the original design specications, they
may cause failure or separation leading to
blowout and an accident and personal
injury or death.
DANGER
Wheels must be serviced only by a
qualied technician. DO NOT do this work
yourself. Inated tires on wheels contain
compressed air and if suddenly released,
do so with an explosive force, resulting in
serious personal injury or death.
Check wheels for signs of rust streaks
around the wheel nuts. This indicates
looseness (steel rims). Inspect all types
of rims for cracks. Cracks can appear in
many places but typically radiate out
from where a load is applied. Inspect
closely around wheelnuts, handholes
and inside circumference.
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