freightliner Argosy COE 2011, Maintenance Manual

Page: 186 / 193

not replaced every six months, damage to the
heater and air conditioner components could
occur.
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. Lift the wire retainer on the air filter cover up and
over the upper edge of the cover, and pull the
wire retainer down. See
Fig. 4 .
3. Note the direction of the arrow on the air filter
cover, then remove the cover and the attached
filter.
4. Remove the air filter from the air filter cover. Dis-
card the air filter.
5. Attach a new air filter to the air filter cover. Make
sure the arrow on the filter is pointing in the
same direction as the arrow on the cover.
6. Install the air filter and air filter cover in the
HVAC air intake plenum.
7. Pull the wire retainer up and over the upper edge
of the air filter cover.
8. Remove the chocks from the tires.
Cab Recirculation Air Filter
Replacement, Water-Valve
Controlled
The cab recirculation air filter must be replaced every
six months, regardless of mileage, to permit proper
operation of the HVAC system.
CAUTION
If the recirculation air filter is not replaced every
six months, damage to the heater and air condi-
tioner components could occur. The HVAC system
should not be operated without the recirculation
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 heater and air conditioner cover and
the upper dash cover. For instructions, see
Sec-
tion 60.08 of the Century Class Trucks Work-
shop Manual .
3. Remove and discard the foam filter.
4. Using velcro tape, attach a new filter to the
HVAC cover. See
Fig. 5 .
5. Install the upper dash cover and the heater and
air conditioner cover. For instructions, see
Sec-
tion 60.08 of the Century Class Trucks Work-
shop Manual .
6. Remove the chocks from the tires.
Cab Recirculation Air Filter
Replacement, Blend Air
The cab recirculation air filter must be replaced every
six months, regardless of mileage, to permit proper
operation of the HVAC system.
CAUTION
If the recirculation air filter is not replaced every
six months, damage to the heater and air condi-
tioner components could occur. The HVAC system
should not be operated without the recirculation
air filter installed.
02/26/2002 f831493
1
2
1. Air Filter Cover 2. Wire Retainer
Fig. 4, HVAC Air Intake Plenum, Blend Air
Heater and Air Conditioner
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Century Class Trucks Maintenance Manual, January 2016
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