Initial Inspection and Diagnostic Overview

ACCESSORY DRIVE

Inspection and Verification

V-Ribbed Belt With Cracks (Acceptable):

V-Ribbed Belt With Cracks (Acceptable)

V-Ribbed Belt With Chunks Of Rib Missing (Not Acceptable):

V-Ribbed Belt With Chunks Of Rib Missing (Not Acceptable)

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.