Audi Workshop Service and Repair Manuals

Detaching toothed belt from camshaft sprocket - vehicles from 08.2000 onwards Special tools and workshop equipment required

t  Pin wrench -3387-

t  Locking plate -T10008-

Detaching toothed belt –  Release quick-release fasteners and remove engine cover panel -arrows-. –  Move lock carrier to service position → Rep. Gr.50. –  Remove poly V-belt → Chapter. –  Remove tensioner for poly V-belt → Chapter „Removing and installing bracket for ancillaries“. –  Remove viscous fan → Chapter.

–  Remove toothed belt cover (top section)   Caution The engine must only be turned at the crankshaft, in the direction of normal engine rotation (clockwise). –  Rotate crankshaft to “TDC” by turning bolt for toothed belt sprocket. l  Marking on camshaft sprocket and marking on crankshaft must be aligned to “TDC”-arrows-.

Caution t  The toothed belt tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure. t  To avoid damage, do not apply more force than necessary when compressing the toothed belt tensioner. –  Applying constant and moderate force, use hexagon key to press toothed belt tensioner anti-clockwise in direction of -arrow- until piston of tensioner can be locked with locking plate -T10008-.

Caution Do not to bend limit stop -A- of eccentric adjuster. –  To slacken toothed belt, loosen nut -1- on tensioning roller and turn eccentric adjuster clockwise -arrow- using pin wrench -3387-. –  Remove toothed belt from camshaft sprocket.

Fitting toothed belt   Caution When turning the camshaft, the crankshaft must not be at “TDC”. Otherwise, there is a risk of damage to valves and piston crowns. –  Align markings on camshaft sprocket / cylinder head cover and markings on vibration damper / toothed belt cover -arrows-. –  Make sure that toothed belt tensioner is still locked with locking plate -T10008-. –  Fit toothed belt onto coolant pump, then onto tensioning roller, and finally onto camshaft sprocket. –  Tension toothed belt → Anchor. –  Install top section of toothed belt cover (make sure it engages securely on centre section of toothed belt cover). Remaining installation steps are carried out in reverse sequence; note the following: –  Install viscous fan → Chapter. –  Install poly V-belt tensioner → Chapter „Removing and installing bracket for ancillaries“. –  Install poly V-belt → Chapter.

–  Install lock carrier with attachments → Rep. Gr.50. –  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten nuts -arrows-. Tightening torques

Component	Nm
Tensioning roller for toothed belt to cylinder head	27
Stop for torque reaction support to sump	28