Camshafts and camshaft adjusters, removing and installing: Removing
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 Audi A6, 2003 Audi S6, 2003 Audi A6, 2002 Audi S6, and 2002 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- Remove toothed belt from camshaft sprockets. See TOOTHED BELT, REMOVING FROM CAMSHAFT SPROCKETS .
- Remove camshaft sprockets from cylinder bank 5-8.
- Loosen bolts -1-.
- Remove bolts -2- and toothed belt cover.
- Remove cylinder head cover. See CYLINDER HEAD COVER, LEFT, REMOVING AND INSTALLING .
- Remove Camshaft Position (CMP) sensor, item -30- and CMP rotor, item -27-. See VALVE GEAR, SERVICING .
- Check TDC position of camshafts:
Both markings on camshafts must align with arrows on bearing caps.
When re-using drive chain:
- Clean drive chain and camshaft sprockets. Mark position with paint.CAUTION: DO NOT mark chain with punch or scriber, use paint only.
Continuation:
- Secure camshaft adjuster with bracket for chain tensioning tool 3366.CAUTION: Do not over-tighten bracket for chain tensioning tool, otherwise camshaft adjuster may be damaged
- Regardless of how bearing caps are marked, mark sequence and installation position of all bearing caps as shown in illustration.
- Remove bolts for camshaft adjuster -arrow-.
- Remove bearing cap 0.
- Remove bearing caps 1, 3, 5, 7 and 8 and place in order on clean surface.
- Loosen bearing caps 2, 4, and 6 diagonally and remove.
- Remove camshafts with camshaft adjuster.