154 S450 Operation & Maintenance Manual
ENGINE AIR CLEANER
Replacing Filters
Figure 205
Replace the air filters only when necessary. The service
indicator (Item 1) will FLASH. Press the Information
button (Item 3) until the display screen shows the service
codes. Service code [M0117] (Air Filter Plugged) will
show in the display screen (Item 2) [Figure 205] when air
filter replacement is necessary.
Replace the inner filter every second time the outer filter
is replaced or as indicated.
Outer Filter
Stop the engine, open the rear door, and remove the rear
grille. (See REAR GRILLE on Page 150.)
Figure 206
Open three latches (Item 1) and move the cover (Item 2)
[Figure 206] out of the way. (One latch is not visible in
the photo.)
Figure 207
Remove the outer filter (Item 1) [Figure 207] and
discard.
NOTE: Make sure the filter housing is free of dirt and
debris. Verify that sealing surfaces are clean.
DO NOT use compressed air.
Install new outer filter. Push in until the filter contacts the
base of the housing.
Install the cover and secure three latches [Figure 206].
Install the rear grille and close the rear door.
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