Ribbed Belt For Accessories, Checking

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Engine damage caused by the camshaft drive skipping.

Only rotate the crankshaft in the direction of engine rotation.

Maintenance point only applies to certain countries: Observe the Maintenance Table specification!

Removal Procedures:

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Remove the ribbed belt. Refer to RIBBED BELT, REMOVING AND INSTALLING (EA 888EVO4) , or RIBBED BELT, REMOVING AND INSTALLING (EA 839) .

Procedure :

-- Check the removed ribbed belt along the entire length as well as the visible belt pulleys on the engine. Note the following points when doing this:

Tears or breaks on the tension belt tread and the rear side (cracks, core ruptures, cross sectional breaks)
Separation (cover layer, belt cords)
Fraying of cords
Foreign objects embedded in the tension belt tread and on the back side
Excessive oil and grease on the rollers and the belt pulleys
Belt pulley wear on the flanks (material wear, frayed flanks, surface cracks) -image-

Fig 1: Ribbed Belt
Courtesy of AUDI OF AMERICA, LLC

-- Applies to vehicles with power steering pump: check the generator freewheel.

-- If there are defects, replace the damaged components.

Installation procedures occur in reverse order.

NOTE:

The illustration above shows a possible damage pattern of the belt pulley. The material wear at the affected sides for the rib treads can appear in various forms.