Chevrolet 25043146 CLEANER A

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At specified intervals, it is advisable to replace both the air filter and PCV filter as part of a comprehensive preventative maintenance program. The air filter is situated within the air cleaner housing atop the engine and can be accessed by unscrewing the wing nut and lifting off the top plate, ensuring to note the positions of any connected vacuum hoses and disconnecting them if necessary. While removing the top plate, caution should be exercised to prevent any debris from falling into the carburetor. Subsequently, the air filter can be lifted out of the housing and inspected by holding it up to strong light, verifying if light passes through the paper element. If light is visible all around the filter, it is deemed serviceable. The interior of the air cleaner should be wiped clean with a cloth, and the old filter (if still in good condition) or a new filter (if the recommended replacement interval has passed) should be securely seated in the housing. Any disconnected vacuum hoses should be reconnected to the top plate, which can then be reinstalled using the wing nut. In most cases, the PCV filter can also be found within the air cleaner housing, and it can be accessed by following similar steps as for the air filter, involving the loosening of the hose clamp, disconnection of the hose, removal of the metal locking clip securing the filter holder, and the replacement of the filter and plastic holder. Comparing the new and old filters to ensure they match is essential. The PCV hose should be reconnected, and the clamp tightened, followed by the reinstallation of the air cleaner top plate and any previously disconnected vacuum hoses. Note that a few engines may have the PCV filter located within the PCV hose, and replacing 'in-line' PCV filters is typically a straightforward process of disconnecting the hose from the filter and inserting a replacement filter into the hose.