IMPORTANT :
• Do
not hit the fresh-air-filter. If the fresh-air-filter
becomes deformed, dust may enter into the air-
conditioner, which may cause damage and
malfunction for the machine.
• Do not use gasoline, thinner, or similar
chemicals to clean the fresh-air-filter because
damage to it may occur.
• Using gasoline, thinner, or similar chemicals to
clean the fresh-air-filter may also cause an
unpleasant odor in the cab when the system is
used next time.
7. Cleaning the recirculation air filter
WARNING
T
o avoid personal injury or death:
• When removing and attaching the recirculation-
air-filter, apply parking brake, and stop the
engine.
IMPORTANT :
• If the machine is used in extremely dusty areas,
clean the recirculation-air-filter more frequently
than in the specified maintenance periods.
1. Remove
the thumbscrews and pull out the
recirculation-air-filter.
(1) Cover (2) Thumbscrew
2. Blow
air from the opposite direction to the normal
air flow of the recirculation-air-filter.
Keep pressure of compressed air as follows.
Pressure of compressed air Under 205 kPa (2.1 kgf/ cm
2
)
(A) Airflow of air conditioner
IMPORTANT :
• Do
not hit the recirculation-air-filter. If the
recirculation-air-filter becomes deformed,
dust may enter into the air-conditioner,
which may cause damage and malfunction
for the machine.
• Do not use gasoline, thinner, or similar
chemicals to clean the recirculation-air-filter
because damage to it may occur.
• Using gasoline, thinner, or similar chemicals
to clean the recirculation-air-filter may also
cause an unpleasant odor in the cab when
the system is used next time.
3. Attach the filter and the cover as the following
illustration.
(1) Recirculation air filter
(2)
Cover
(3) Thumbscrew
EVERY 250 SERVICE HOURS
Carry out all 50 hour servicings at the same time.
1. Changing the engine oil
WARNING
T
o avoid personal injury or death:
• First stop the engine, and wait long enough for
the oil to cool down.
 MAINTENANCE EVERY 50 SERVICE HOURS
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