Ribbed Belt, Checking

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Perform the following:

-- Turn engine at vibration damper/ belt pulley with socket wrench.

Check ribbed belt -1- for:

Fig 1: Identifying Engine Accessory Drive Belt

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Sub-surface cracks (cracks, core ruptures, cross sectional breaks)
Separation (cover layer, belt cords)
Breaks at lower layer
Fraying of cords
Wear at flanks (material wear, frayed flanks, hardening or glazing of flanks, surface cracks)
Oil or grease contamination

NOTE:

Replace the belt if any damage is found. By replacing, failures and/or disturbances can be avoided. Replacing the belt is a repair procedure.