Kenworth T410, Driver'S Handbook Manual

Page: 268 / 418

Page 242 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
TYRES
TYRE INFLATION AND LOADING
Regular and frequent inspection, and proper care will give you the
assurance of safe, reliable tyre operation.
Most tyre wear problems are caused by under inflation as the result of slow
leaks. Low pressure is the tyres worst enemy; it allows tyres to flex badly
and this causes high temperatures to build up. Heat causes early tyre
damage such as flex breaks, radial cracks and ply separation. Furthermore,
low tyre pressures can affect control of your vehicle, particularly at the
front wheels.
TYRE INSPECTION AND REPLACEMENT
Visually inspect your tyres frequently for any abnormal conditions such as
scrapes, bulges and uneven wear. This must be done immediately after
known or suspected contact with an object on the road, pothole, road
irregularity or after severe braking. Refer these conditions to an authorised
tyre service centre for repair or replacement. Never drive on a tyre if such
conditions appear.
If the tyre looks underinflated, stand off to the side and check for damage
to the wheel assembly. This can be done by visually comparing the wheel
in question to other wheels on the vehicle. For dual wheel assemblies,
check between the wheels for damage. If any damage is found, or you
suspect damage, do not attempt further repair. Call for expert tyre service.
Do not operate vehicle with underinflated tyres. The extra heat caused
by underinflation can cause sudden tyre failure such as a blow out.
Low pressure may affect control at the front wheels, which could
result in an accident and serious injury. Keep your tyres inflated to
the tyre manufacturer’s recommended air pressure.
Tyre thumping during the walk around inspection will tell if a tyre is deflated.
The correct way to check tyre pressure is with an accurate gauge. This
should be done regularly; at least once a week if operating on a heavy
schedule.