Left and right timing chain covers, removing and installing: Installing
WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, and 2007 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
- Tightening torques → Left timing chain cover, tightening sequence , Right timing chain cover, tightening sequence .
NOTE:
- Replace M6 bolts and O-rings.
- Secure all hose connections using hose clamps appropriate for the model type .
- During installation, all cable ties must be re-installed at the same location.
CAUTION:
Risk of eye injury.
- Wear safety glasses.
CAUTION:
Risk of contaminating lubricating system.
- Cover open parts of engine.
- Remove sealant residue on timing chain covers and cylinder head, e.g. with a rotating plastic brush.
- Clean sealing surfaces so they are completely free of any oil or grease.
- Cut off nozzle on tube of sealant at front mark (dia. of nozzle approx. 2 mm).
- Drive left coolant intermediate pipe - 2 - out of timing chain cover with a drift.
- Replace O-rings - 1 - at coolant intermediate pipe - 2 -.
- Insert coolant intermediate pipe in left timing chain cover.
- Apply sealant bead - arrows - on clean sealing surfaces of left timing chain cover, as shown in illustration.
- Thickness of sealant bead: 2.5 mm.
NOTE:
- Timing chain covers must be installed within 5 minutes after applying sealant.
- Position left timing chain cover and tighten bolts → Left timing chain cover, tightening sequence
- Drive right coolant intermediate pipe - 2 - out of right timing chain cover with a drift.
- Replace O-rings - 1 - at coolant intermediate pipe - 2 -.
- Insert coolant intermediate pipe in right timing chain cover.
- Apply sealant bead - arrows - on clean sealing surfaces of right timing chain cover, as shown in illustration.
- Thickness of sealant bead: 2.5 mm.
- Position right timing chain cover and tighten bolts → Right timing chain cover, tightening sequence
The rest of installation is in reverse order of removal, note the following:
- Install rear coolant pipe → Rear coolant line, removing and installing .
- Install secondary air injection combination valve: Left → Left combination valve for Secondary Air Injection, removing and installing , right → Right combination valve for Secondary Air Injection, removing and installing .
- Install oxygen sensors G39 and G108 → 24 - MULTIPORT FUEL INJECTION (MFI) .
- Install left coolant pipe → Left coolant pipe, removing and installing .
- Install right coolant pipe → Right coolant pipe, removing and installing .
- Fill with coolant → Filling .