Operation CHARM: Car repair manuals for everyone.

Timing Belt: Service and Repair






Ribbed Belt, Checking, 6.0L MPI and 5.2 FSI

Check guide rollers and tensioner rollers and replace if necessary.

Check ribbed belt - 1 - for:





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

Replace the belt if any damage is found. By replacing, failures and/or disturbances can be avoided. The replacement of a ribbed belt is a repair measure