Replacement of the Cab Fresh-Air Filter

p3 mm 83.02

The HVAC system has three filters that must be replaced periodically to maintain proper system operation. The cabin fresh-air-intake filter is accessed from under the hood, and the recirculation filter is accessed from inside the cab. The sleeper air filter is accessed through an access panel on the cabinet behind the driver's seat.

    Important: When replacing the air filter, use only a Freightliner-approved air filter.

  1. Park the vehicle on a level surface, shut down the engine, and set the parking brake. Chock the tires.
  2. Open the hood.
  3. Remove the intake screen. See Fig..

    Fig. 1, Intake Screen

  4. Lightly press on the filter tray handle to disengage the lock (see Fig.), and slide the tray out of the slot in the plenum.

    Fig. 2, Disengaging the Lock

  5. Remove the filter from the tray. Note the airflow directional arrow on the filter's edge. When properly installed, the airflow arrow will point in the same direction as the marking on the front edge of the tray. Both will point toward the cab.See Fig..

    1. Airflow Directional Arrow Orientation

    Fig. 3, Airflow Directional Arrow

  6. Put a new filter in the slot, making sure the airflow arrow is correctly oriented, and install the access panel. Make sure the access panel locks into position.
  7. Install the intake screen.
  8. Return the hood to the operating position.
Note:
Parent topic: Replacement of the Air Filter
Document Number: 0000116541
Manual Publication Date: 2024-05-15
Topic Publication Date: 2024-11-22