MAINTENANCE
7-99
K. Air Conditioner
Clean/Replace Air Conditioner Circulation/Fresh
Air Filters
Clean filters --- every 100 hours (or once a week
whichever come first)
Replace filter --- after cleaning filters 10 times (or
when the filters are severely clogged)
Clean Fresh Air Filter
1. Remove the filter:
The fresh air filter is installed behind cover (1) on the
left rear side of the cab exterior.
Open cover (1) with the starter key.
2. Loosen wing nuts (3) and remove plate (2).
3. Remove fresh air filter (4).
d
WARNING: When using compressed air pressure,
wear safety glasses or goggles.
IMPORTANT:
If compressed air delivery pressure is high,
damage to the filter fins may result.
Always use compressed air at the lower pressure
than 0.2 MPa (2kgf/cm
2
, 30 PSI).
Keep the nozzle more than 500 mm (20 in) away
from the core surface.
4. Clean fresh filter (4) using compressed air.
IMPORTANT:
Incorrect installation of the filter may cause
dust to enter into the air conditioner, causing
malfunction or breakdown of the air conditioner.
Before installing the filter element, clean off
dust around the mounting area; install the filter
element with extra care.
Keep cab doors closed when operating machine.
3. Install the cleaned fresh air filter or a new filter by
following the filter removal procedure described in
step 1 in the reverse order.
2
4
3
115Z7-7-97-1
1
MNEC-07-043
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