Audi Workshop Service and Repair Manuals

Removing and installing timing chain covers (top) Special tools and workshop equipment required t  Electric drill with plastic brush t  Safety goggles t  Sealant → Electronic parts catalogue Removing Timing chain cover (top left): –  Remove particulate filter: t  Vehicles with multitronic gearbox 0AW (front-wheel drive) → Chapter. t  Vehicles with dual clutch gearbox 0B5 → Chapter. –  Remove cylinder head cover (left-side) → Chapter.

–  If fitted, unscrew bolts -2- and remove heat shield.   Note Disregard -item 1-.

Timing chain cover (top right): –  Remove plenum chamber partition panel → Rep. gr.50. –  Remove cylinder head cover (right-side) → Chapter. –  Remove bolts -2 and 3-. –  Release hose clip -1- and detach air pipe. –  Press air pipe to rear.

Continuation for both sides: –  Loosen bolts in the sequence -7 ... 1-. –  Carefully release timing chain cover (top) from bonded joint and remove cover. Installing l  Tightening torques → Fig. „„Timing chain covers (top) - tightening torque and tightening sequence““ –  Remove old sealant from sealing surfaces on timing chain cover.   Caution Protect lubrication system against contamination. Cover exposed parts of the engine.

WARNING Protect eyes against injuries. Wear safety goggles. –  Remove remaining sealant on timing chain cover and cylinder head using rotating plastic brush or similar. –  Clean surfaces; they must be free of oil and grease.   Note

Note the use-by date of the sealant. –  Cut off nozzle of tube at front marking (nozzle Ø approx. 1.5 mm).

–  Fit gasket -1-. –  Apply sealant at joints between cylinder head and timing chain cover (bottom) -arrow-, as shown in illustration.   Caution Make sure lubrication system is not clogged by excess sealant. The bead of sealant must not be thicker than specified. l  The bead of sealant must project 1.5 … 2.0 mm above the sealing surface.

–  Apply sealant beads -1 and 2- onto clean sealing surface of timing chain cover (left-side), as illustrated.

–  Apply sealant beads -1 and 2- onto clean sealing surface of timing chain cover (right-side), as illustrated.   Note The timing chain covers must be installed within 5 minutes after applying the sealant. –  Fit timing chain cover and tighten bolts → Fig.. Remaining installation steps are carried out in reverse sequence; note the following: Timing chain cover (top left): –  Install cylinder head cover (left-side) → Chapter. –  Install particulate filter: t  Vehicles with multitronic gearbox 0AW (front-wheel drive) → Chapter. t  Vehicles with dual clutch gearbox 0B5 → Chapter. Timing chain cover (top right): –  Install air pipe → Chapter. –  Install cylinder head cover (right-side) → Chapter. –  Install plenum chamber partition panel → Rep. gr.50.