Komatsu WA250-5 Service Manual

.
OPERATION
OPERATION
HANDLING THE TIRES
PRECAUTIONS WHEN HANDLING TIRES
If
a
tire
has
reached
any
of
the
following
service
limits,
there
is
danger
that
the
tire
may
burst
or
cause
an
accident,
so
to
ensure
safety,
replace
it
with
a
new
tire.
Service
limits
for
wear
When
the
remaining
depth
of
the
groove
on
construction
equipment
tires
(at
a
point
approx.
1/4
of
the
tread
width)
is
15%
of
the
groove
depth
on
a
new
tire.
When
the
tire
shows
marked
uneven
wear,
stepped
wear
or
other
abnormal
wear,
or
when
the
cord
layer
is
exposed.
Service
limits
for
damage
When
there
is
external
damage
extending
to
the
cord
or
when
the
cord
is
broken
When
the
cord
is
cut
or
there
is
dragging
When
the
tire
is
peeling
(there
is
separation)
When
the
bead
is
damaged
For
tubeless
tires,
when
there
is
air
leakage
or
improper
repair
Please contact your Komatsu distributor when replacing the tires. It is dangerous to jack up the machine without
taking due care.
TIRE PRESSURE
Measure the tire pressure before starting operations, when the tires are cool.
If the tire inflation pressure is too low, there will be overload; if it is too high, it will cause tire cuts and shock burst.
To prevent these problems, adjust the tire inflation pressure according to the table on the next page.
Deflection ratio = H - h / H x 100
As a guideline that can be checked visibly, the deflection ratio of the front tire (deflection/free height) is as follows.
When carrying normal load (lift arm horizontal): Approx. 15 to 25 %
When digging (rear wheels off ground): Approx. 25 to 35 %
When checking the tire inflation pressure, check also for small scratches or peeling of the tire, for nails or pieces of
metal which may cause punctures, and for any abnormal wear.
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Komatsu WA250-5 Specifications

General

Brand	Komatsu
Model	WA250-5
Category	Front End Loaders
Language	English