SERVICE BULLETIN - Autocar, LLC

SERVICE BULLETINSB 2-220-001JUNE, 2007STEP 2: Remove the air filter• Unfasten or unlatch the service cover. Becausethe fi lter element fi ts tightly over the outlet tubeto create the critical seal, there will be some initialresistance in breaking the seal.• Gently move the end of the fi lter element back andforth to break the seal then rotate while pullingstraight out (Figure 2).• Make sure that all contaminant is removed beforethe new fi lter element is inserted. Dirt accidentlytransferred to the inside of the outlet tube willreach the engine and cause accelerated enginewear. Be careful not to damage the sealing areaon the tube.NOTE:If your air fi lter assembly is equipped with aVacuator valve (Figure 4), visually check andsqueeze the valve to make sure it is fl exibleand not inverted, damaged or plugged.Figure 2• Avoid knocking the fi lter element against thehousing.NOTE:If the air fi lter assembly is equipped witha safety fi lter, replace it with every thirdprimary fi lter change. Remove the safetyfi lter in the same manner as the primaryfi lter. Cover the air cleaner outlet tube toprevent any unfi ltered contaminant fromdropping into the engine.STEP 3: Clean both surfaces of the outlet tubeand check the Vacuator valve• Use a clean cloth to wipe the fi lter sealing surfaceand the inside of the outlet tube (Figure 3).Contaminant on the sealing surface could hinderan effective seal and cause leakage.Figure 4STEP 4: Inspect the old air filter for evidence ofair leaks• Visually inspect the old fi lter element for any signsof leaks (Figure 5). A streak of dust on the cleanside of the fi lter is a clear indicator of an air leak.Figure 5• Correct the cause of any air leaks before installingthe new fi lter element.Figure 3Wipe the outeredge of the outlettube clean.Wipe the insideedge of the outlettube clean.Autocar, LLC551 South Washington StreetP.O. Box 190Hagerstown, IN 47346-01903 of 4AC-SB-256-0706-P152