Audi Workshop Service and Repair Manuals

Removing and installing timing chain cover (top) Special tools and workshop equipment required t  Electric drill with plastic brush attachment t  Safety goggles t  Sealant → Electronic parts catalogue

Removing –  Press release tab at bottom of bracket and unhook bracket -arrow- from timing chain cover (top) with coolant hoses still attached.

–  Loosen and remove bolts in the sequence -G … A-. –  Carefully release timing chain cover (top) from bonded joint and remove cover. Installing l  Tightening torques → Fig. „„Timing chain cover (top) - tightening torque and tightening sequence““   Caution Protect lubrication system against contamination. Cover exposed parts of the engine. –  Remove old sealant from grooves on timing chain cover (top) and from sealing surfaces.

WARNING Protect eyes against injuries. Wear safety goggles. –  Remove remaining sealant on timing chain cover (top) and cylinder head cover using rotating plastic brush or similar.   Note

Note the use-by date of the sealant. –  Cut off nozzle of tube at front marking (nozzle Ø approx. 2.5 mm). –  Clean surfaces; they must be free of oil and grease.

Caution Make sure lubrication system is not clogged by excess sealant. The bead of sealant must not be thicker than specified. –  Apply sealant bead -1- onto clean sealing surface of timing chain cover (top) as shown in illustration. l  The bead of sealant must be 2.0 … 3.0 mm thick. –  Apply slightly more sealant to area marked by -arrows-.   Note The timing chain cover must be installed within 5 minutes after applying the sealant.

–  Fit timing chain cover (top), screw bolts in by hand until they make contact and then tighten bolts → Fig.. The remaining installation steps are carried out in the reverse sequence.