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How do I change my a/c filter on my Freightliner?

by Jim
(Edinburg, Ill.)

I see its under the hood on the firewall passenger side. It has wire clamps and hex head screws. whats the proper procedure to remove and clean this filter?

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Jun 17, 2023
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Changing the A/C filter on a Freightliner truck
by: The Crazy Trucker

You didn't say what year or whether it's a Columbia, Cascadia or Coronado etc... so we'll go general.

To change the A/C filter on a Freightliner truck, follow these steps:

1. Locate the A/C filter: The A/C filter is usually located behind the glove compartment or in the HVAC unit, which can vary depending on the specific model and year of the truck. Consult the owner's manual or reach out to the manufacturer for the precise location of the filter.

2. Prepare for the task: Before starting, ensure you have the necessary tools and a replacement A/C filter that matches the specifications of your truck's make and model.

3. Access the filter compartment: Open the glove compartment or remove any panels or covers that provide access to the A/C filter compartment. This may involve unscrewing or unclipping components.

4. Remove the old filter: Carefully take out the old A/C filter from its housing. Pay attention to its orientation and the direction of airflow indicated on the filter, as the replacement filter should be installed the same way.

5. Clean the filter housing: Use a clean cloth or a vacuum cleaner to remove any debris or dust from the filter housing. Ensure there are no obstructions that could affect the performance of the new filter.

6. Install the new filter: Take the new A/C filter and place it into the filter housing, aligning it according to the airflow direction indicated on the filter. Ensure it fits snugly and securely.

7. Close the compartment: If you removed any panels or covers, reattach them properly, making sure they are securely fastened.

8. Test the A/C system: Start the truck's engine and turn on the A/C system to check if it's functioning correctly. Feel the airflow to ensure it is passing through the new filter and that the cabin air quality has improved.

Note: The above steps provide a general guideline for changing the A/C filter on a Freightliner truck. However, specific models or years may have variations in the filter's location and the process.

Always refer to the owner's manual or contact a Freightliner dealership for precise instructions related to your truck's make and model.

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