MAINTENANCE 4.7 WHEN NECESSARY Air Cleaner Maintenance, illustration Z 20716 G If the fault message "Air cleaner element restricted" is again displayed on the ECS screen after installation of a new main filter element the safety-filter element has also to be replaced. NOTICE G If faulty service or a defect has been detected while ser- vicing the main filter element also the safety filter ele- ment has to be replaced. G After having the main filter element cleaned three-times or replaced also the safety filter element has to be replaced. Replacing the safety filter element (7): 1. Remove element in sequence of ref. no. (1 to 7). 2. Cover air intake opening. 3.
Install new safety filter element (7). The safety filter element may not be cleaned and re-used 4. Remove cover from air intake opening. 5. Install safety and main filter element, take care service indica- tor (6) is correctly secured by cotter pin (5). General Service Tips The air cleaners should be inspected periodically to maintain maximum engine protection and maximum service life. These inspections should include the following points. 1. Inspect the air transfer duct between the air cleaner and the engine to be sure all clamps are tight, all flange joints are tight, and there are no cracks in the ducting. 2.
Air cleaner mounting bolts and clamps must be tight to hold the air cleaner securely. 3. Check the dust cup to make sure it is sealing 360° around the air cleaner body. 4. Automatic dust unloader valve (if so equipped) must be in place, not inverted or damaged, and free from obstruction. 307 WARNING