BOOM & BEARING AS 4388749 - Caterpillar

Servicing Air Cleaner Elements
Never service the air cleaner with the engine running since this will allow dirt to enter the engine.
If your air cleaner element becomes plugged, the air can split the element material. Unfiltered air will drastically accelerate internal engine wear. Your Caterpillar dealer has elements to service this unit. Contact your Caterpillar dealer for the correct element.Dual Element Air Cleaner
The dual element air cleaner contains a primary element and a secondary element. The primary element can be used up to six times if the element is properly cleaned and inspected. Replace the primary element at least every year, regardless of the number of times that the element has been cleaned.The secondary element is not serviceable (washable). The secondary element should be replaced every third time that the primary element is serviced. When the engine is operating in a dusty or dirty environment, air cleaner elements may require more frequent replacement.
(1) Cover. (2) Primary element. (3) Secondary element. (4) Turbocharger air inlet.1. Remove the cover. Remove the primary element.2. Remove and discard the secondary element (every third maintenance interval of the primary element).3. Cover the turbocharger air inlet with tape to keep dirt out.4. Clean the inside of the air cleaner cover and body with a clean, dry cloth.5. Remove the tape covering the turbocharger air inlet. Install the secondary element. Install either a new or cleaned, undamaged primary element.6. Install and secure the air cleaner cover.7. Reset the service indicator.Cleaning Air Cleaner Elements
The primary element can be used up to six times if the element is properly cleaned and inspected. The element, when cleaned, should be thoroughly checked for rips or tears in the filter material. Replace the primary element at least every year, regardless of the number of times that the element has been cleaned.Have clean elements available for use while dirty elements are being cleaned.
Do not clean the air cleaner elements by bumping or tapping. This could damage the seals. Do not use elements with damaged pleats, gaskets or seals. Damaged elements will allow dirt to pass through. Engine damage could result.
Visually inspect the elements before cleaning. Inspect the elements for damage to the seal, the gaskets, and the outer cover. Discard any damaged elements.There are four common methods used to clean primary air cleaner elements.* Pressurized water* Pressurized air* Vacuum cleaning* Washing with nonsudsing detergentPressurized Water
Pressurized water will clean the element unless carbon and oil has accumulated on the surface of the element. Use the normal water outlet pressure with a maximum pressure of 280 kPa (40 psi). Do not use a pressure nozzle. When cleaning the elements, always begin with the clean side (inside) in order to force dirt particles toward the dirty side (outside).Do not aim the water stream directly at the element-dirt could be forced deeper into the pleats. Direct the water stream along the length of the pleats.Dry the element thoroughly. Inspect the element before installation. Repeated cleaning with this method can force dirt deeper into the filter material.Pressurized