Komatsu WA250PT-5H Operation & Maintenance Manual page 210

Service procedure
When required
Check inflaion pressure of tires
When inflating a tire, check that no one will enter the
working area. Use an air chuck which has a clip and which
can be fixed to the air valve.
While inflating the tire, check the inflation pressure
occasionally so that it will not rise too high.
If the rim is not fitted normally, it may be broken and
scattered while the tire is inflated. To ensure safety,
place a guard around the tire and do not work in front
of the rim but work on the tread side of the tire.
Abnormal drop of inflation pressure and abnormal fit-
ting of the rim indicate trouble in the tire or rim. In this
case, be sure to ask a tire repair shop to carry out
repairs.
Be sure to observe the specified inflation pressure.
Do not adjust the inflation pressure of the tires just
after high-speed travel or heavy-duty work.
Check
Measure the inflation pressure with a tire pressure gauge while the tires are cool before starting work.
Inflation of tires
Adjust the inflation pressure properly.
When inflating a tire, use an air chuck which can be fixed to the air valve of the tire as shown in the figure. Do not
work in front of the rim but work on the tread side of the tire.
The proper inflation pressure is shown below.
Tire size
Standard 20.5-25-12PR
NOTICE
The optimum inflation pressure differs according to the type of work. For details, see "Handling the tires
on page 3-96" .
4-36
WARNING
Inflation pressure
Front Tire: 0.27MPa(2.8 kgf/cm
Rear Tire: 0.27MPa(2.8 kgf/cm
, 39.8 PSI)
2
, 39.8 PSI)
2
MAINTENANCE
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