Audi Workshop Service and Repair Manuals > A4 Cabriolet Mk2 > Power unit | 8-cylinder engine (4.2 ltr. 5-valve with timing chains), mechanics | Enginecrankshaft group, pistons | Servicing work on timing chain end | Removing and installing chain for auxiliary drives

Removing and installing chain for auxiliary drives

Special tools and workshop equipment required

t	Used oil collection and extraction unit -V.A.G 1782-

Removing

–	Place used oil collection and extraction unit -V.A.G 1782- under engine and drain engine oil.

–	Remove engine: Vehicles with manual gearbox → Chapter; vehicles with automatic gearbox → Chapter.

–	Separate engine and gearbox: vehicles with manual gearbox → Chapter; vehicles with automatic gearbox → Chapter.

–	Leave engine on scissor-type assembly platform -VAS 6131 A- or secure it to engine and gearbox support: vehicles with manual gearbox → Chapter; vehicles with automatic gearbox → Chapter.

–	Remove timing chain covers → Chapter.

–	Press guide rail of chain tensioner in direction of -arrow- and lock chain tensioner by inserting a 3.3 mm Ø drill bit -Item 1-.

Note

Should you need to remove the chain sprocket for auxiliary drives, you must first loosen the securing bolt before removing the chain.

–	Mark running direction of chain for auxiliary drives with paint.

–	Unscrew bolts -2 … 5- and remove chain tensioner.

–	Remove chain for auxiliary drives.

Installing

Installation is carried out in the reverse order; note the following:

–	First fit chain for auxiliary drives.

–	Fit chain tensioner onto engine (starting at top).

–	Install timing chain covers → Anchor.

–	Install engine: vehicles with manual gearbox → Chapter; vehicles with automatic gearbox → Chapter.

–	Fill up with engine oil and check oil level → Chapter.

Tightening torque

Component	Nm
Chain tensioner to cylinder block	10
Oil drain plug	50

Audi Workshop Service and Repair Manuals