CROWN AS-PISTON 9Y7027 - Caterpillar

To avoid personal injury, always wear eye and face protection when using pressurized air.
Caterpillar recommends certified air filter cleaning services that are available at Caterpillar dealers. The Caterpillar cleaning process uses proven procedures to assure consistent quality and sufficient filter life.Observe the following guidelines if you attempt to clean the filter element:Do not tap or strike the filter element in order to remove dust.Do not wash the filter element.Use low pressure compressed air in order to remove the dust from the filter element. Air pressure must not exceed 207 kPa (30 psi). Direct the air flow up the pleats and down the pleats from the inside of the filter element. Take extreme care in order to avoid damage to the pleats.Do not use air filters with damaged pleats, gaskets, or seals. Dirt entering the engine will cause damage to engine components.
Clean the engine air filter primary element when the clogged air filter indicator is displayed on the Caterpillar controller. Clean the engine air filter primary element as soon as convenient.
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Open the access door on the right side of the machine.
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Loosen the four cover latches and remove the air cleaner cover.Note: The latches for the air cleaner housing may snap open when you release the latches.
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Remove the primary filter element from the air cleaner housing. In order to remove the engine air filter primary element, pull the element outward. While you pull the element outward, rock the element.Use Steps 4 through 6 in order to clean the primary element:
Inspect the primary element. If the pleats, the gaskets, or the seals are damaged, discard the element. Replace a damaged primary element with a clean primary element.
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If the primary element is not damaged, clean the primary element.Pressurized air can be used to clean a primary element that has not been cleaned more than two times. Use filtered, dry air at a maximum pressure of 207 kPa (30 psi).Note: Pressurized air will not remove deposits of carbon and oil.
When you clean the primary element, always begin in the inside of the element (clean side). This will force dirt particles toward the outside of the element (dirty side).Direct the air along the length (inside) of the filter. This will help prevent damage to the paper pleats.Note: Do not aim the stream of air directly at the primary element. Dirt could be forced further into the pleats.Use Steps 7 through 10 in order to inspect the primary element:
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Place a light bulb inside the filter element. Use a 60 watt blue light in a dark room or in a similar facility. Inspect the primary element for light that may show through the filter material.
Inspect the primary element while you rotate the element. Inspect the primary element for tears and/or holes. Do not use a primary element that has any tears and/or holes in the filter material. Do not use a primary element with damaged pleats, gaskets, or seals.
If it is necessary, compare the primary element to a new primary element.