151 S450 Operation & Maintenance Manual
HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) SYSTEM
This machine may be equipped with a cab heater or HVAC system.
Filters
See the SERVICE SCHEDULE for the correct service interval. (See SERVICE SCHEDULE on Page 134.)
Fresh Air Filters
Figure 196
The fresh air filters are located behind the side windows
outside the operator cab. (Right side shown) Remove the
retaining screw (Item 3) and the filter cover (Item 2)
[Figure 196]. (Lift arms shown raised for visual clarity.)
NOTE: Loosen the upper filter cover bolt (Item 1)
[Figure 196] to allow removal and installation
of the cover if equipped with the
High-Efficiency Particulate Air (HEPA) filter
kit.
Shake the filter (Item 4) [Figure 196] or use low pressure
air to remove dirt. This procedure can be done several
times before replacement is required. Install the filter, the
filter cover, and the retaining screw.
Recirculation Filter
Figure 197
The recirculation filter is located behind the operator’s
seat inside the operator cab. The filter cover is held in
position with three clips. Pull the cover at each end (Item
1) [Figure 197] to remove.
Rinse the filter with water or use a vacuum cleaner to
clean. Do not use solvents.
Line up the clips on the filter cover with the slots provided
and push the cover into position.
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