38 SENR9977 Testing and Adjusting Section Air Inlet and Exhaust System i02254115 Wastegate - Test i02253770 Air Inlet and Exhaust System - Inspect Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool. A general visual inspection should be made to the air inlet and exhaust system. Make sure that there are no signs of leaks in the system. There will be a reduction in the performance of the engine if there is a restriction in the air inlet system or the exhaust system. NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.
Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool. Making contact with a running engine can cause burns from hot parts and can cause injury from rotating parts. When working on an engine that is running, avoid contact with hot parts and rotating parts. 1. Inspect the engine air cleaner inlet and ducting in order to ensure that the passageway is not blocked or collapsed. 2. Inspect the engine air cleaner element. Replace a dirty element with a clean element. g01135413 Illustration 46 3. Check for evidence of dirt on the clean side of the engine air cleaner element.
If dirt is observed, contaminants are flowing past the element. Note: The turbocharger is a nonserviceable item. The pressure for the wastegate can be checked, but not adjusted. 1. Use a suitable dial indicator (1). Align the dial gauge to the actuator rod (2). 2. Remove the air hose to the actuator . Install an air line (3) that can be adjusted in order to give the correct pressure.