freightliner Argosy COE 2011, Maintenance Manual

Page: 185 / 193

83–02 Air Filter Replacement
Cab Fresh Air Filter
Replacement, Water-Valve
Controlled
The cab fresh air filter must be replaced every six
months, regardless of mileage, to permit proper op-
eration of the HVAC system.
CAUTION
If the fresh air filter is not replaced every six
months, damage to the heater and air conditioner
components could occur. The HVAC system
should not be operated without the fresh air filter
installed.
IMPORTANT: When replacing the air filter, use
only a Freightliner-approved air filter.
1. Park the vehicle on a level surface. Apply the
parking brakes and chock the rear tires.
2. Remove the two Torx® screws that secure the
HVAC air filter cover to the air intake plenum.
See
Fig. 2 .
3. Pivot the front end of the cover out to remove
the cover, and pull the air filter out of the air in-
take plenum.
4. Install a new air filter.
4.1 Slide a new air filter into the air intake
plenum.
NOTE: When installing the HVAC air filter,
be sure that it is oriented properly. The filter
label has an arrow that indicates the air flow
direction. See
Fig. 3 .
4.2 Install the air filter cover on the plenum
and install the two Torx screws.
5. Remove the chocks from the tires.
Cab Fresh Air Filter
Replacement, Blend Air
If the vehicle is equipped with a cab fresh air filter, it
must be replaced every six months regardless of
mileage to permit proper operation of the HVAC
system.
CAUTION
If equipped with a fresh air filter, it should be re-
placed every six months. If the fresh air filter is
1
2
3
12/18/96 f830768
1. HVAC Plenum
2. Filter Cover
3. Torx Screws
Fig. 2, HVAC Air Intake Plenum, Water-Valve Controlled
12/18/96 f830769
1
2
1. Air Filter
2. Air Flow Direction Arrow
Fig. 3, HVAC Air Filter, Water-Valve Controlled
Heater and Air Conditioner
83
Century Class Trucks Maintenance Manual, January 2016
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