Replacement of the Cab Fresh Air Filter, Blend Air

cen mm 83.02.000

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 replaced every six months. If the fresh air filter is 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..

    1. Air Filter Cover

    2. Wire Retainer

    Fig. 1, HVAC Air Intake Plenum, Blend Air

  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. Discard 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.
Note:
Parent topic: Replacement of the Air Filter
Document Number: 0000122471
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-06-04