Inspection of the Engine Noise Panel (Noise Emission Control)

If equipped, inspect for torn engine noise panels. See Fig. for Caterpillar noise panel locations. If panels are torn, replace them with new panels; see of the Century Class Trucks Workshop Manual for procedures. Cummins M11 and N14 engines, and Detroit Diesel Series 55 and Series 60 engines do not have engine noise panels.

Oil Pan Noise Panel (C10 engine only)

Left-Side Noise Panel (3406 engine only)

Fig. 1, Caterpillar Engine Noise Panels