UD Trucks QUESTER Series, Руководство пользователя

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8.INSPECTION AND MAINTENANCE
8-21
Precaution for tyre position rota-
tion
D o n o t i n s t a l l t y r e s w i t h t h e
difference of outer diameters beyond
t h e s p e c i f i e d r a n g e a t m u l t i p l e
wheels (rear wheels).
• Use less worn tyres with adjusted
wheel balance at front wheels.
• Make sure that the turning direc-
tion is opposite to the previous
installation.
• Remember to install the same
size tyre on the same axle. If tyres
with different sizes are used on
the same axle, the vehicle may be
pulled either right or left. When
braking or the steering wheel may
be turned. Do not install tyres of
different sizes.
• Replenish new tyres in pairs and
install them on the front wheels
first.
• When new tyres are installed, per-
form a break-in drive. Perform
break-in drive for 200 km or more
at the speed of 60 km/h or less or
for 300 km at the speed of 50 km/
h or less. Check the air pressure
after the vehicle has been driven
for 3,000 km.
• Check for galling deformation on
the screw portion of the bolts and
wheel nuts. If excessive damage
is found, replace the deformed
bolts and nuts as a set. Replace
all bolts and wheel nuts as a pre-
cautionary measure because
other bolts and wheel nuts may
also attain damage.
Bias tyre
Specified range of outer diameter differ-
ence for multiple tyres
Within 12 mm