Inspection and Verification: Notes
WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Under severe operating conditions (high temperatures, low humidity), drive belt rib cracking can occur at less than 48,000 km (30,000 miles). Drive belt rib cracking has no effect on belt performance. Drive belt chunking describes a condition in which the rubber material actually chunks out between the rib cracks. A new drive belt must be installed if chunking occurs.