A restricted or leaking air intake system could cause loss of power and engine damage.
| • | Inspect the air cleaner filter for damage or excessive dirt accumulation. Replace if necessary. | 
| • | Inspect the air inlet elbow and CDR tube for damage or cracks. Replace if necessary. | 
Refer to Maintenance and Lubrication of the appropriate service manual for change intervals. Operation of the vehicle in dusty areas will necessitate more frequent replacement.