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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. Loosen wing nuts (3) and remove plate (2).
Remove fresh air filter (4).
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 (2
kgf/cm
2
, 30 PSI). Keep the nozzle more than 500 mm
(20 in) away from the core surface.
2. Clean fresh filter (4) using compressed air or by washing
with water. Washing procedure with water is as follows:
2.1 Use tap water.
2.2 Submerge the filter in water containing a neutral
detergent for about 5 minutes. Move the filter around
in water slowly for about 2 minutes.
2.3 Rinse the filter with water. Check for cleanness. Repeat
2.2 and 2.3 if needed.
2.4 Dry the filter.
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.
MAINTENANCE
4
7-93
1
MNEC-01-054
2
3
MNEC-07-043
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