Audi Workshop Service and Repair Manuals

Removing and installing tensioner for toothed belt Special tools and workshop equipment required

t  Locking plate -T10008-

Removing –  Move lock carrier to service position → Chapter. –  Lift off engine cover -arrows-.   Note

Before removing, mark direction of rotation of poly V-belt with chalk or felt-tip pen. If the belt runs in the opposite direction when it is refitted, this can cause breakage. –  Turn the tensioner in the direction of the -arrow- to slacken the poly V-belt. –  Remove poly V-belt.

–  Unscrew bolts -arrows- and remove poly V-belt tensioner.

–  Remove toothed belt cover (top section) -arrows-.

–  Remove toothed belt cover (centre) -arrows-.

–  Secure tensioning roller using e.g. cable tie -arrow- to prevent it dropping.   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-. –  Insert locking plate -T10008- and make sure that it remains in place.

–  Remove tensioner for toothed belt -arrows-.

Installing Installation is carried out in the reverse order; note the following. –  Install toothed belt tensioner. –  Remove cable tie -arrow-.

–  Loosen nut -1- for tensioning roller. –  Tension toothed belt → Anchor.

–  Install top section of toothed belt cover (make sure it engages securely on centre section of toothed belt cover). –  Secure top section of toothed belt cover -arrows-. –  Install poly V-belt → Chapter.

–  Install lock carrier with attachments → General body repairs, exterior; Rep. gr.50. –  Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten bolts -arrows-. –  Install front bumper cover → General body repairs, exterior; Rep. gr.63. –  Check headlight adjustment → Booklet803. Tightening torques

Component	Nm
Tensioner for toothed belt to cylinder head	15
Tensioning roller for toothed belt to cylinder head	27
Toothed belt cover (centre section) to cylinder head	10 → Remark
Toothed belt cover (top section) to cylinder head	10
Tensioner for poly V-belt to bracket for ancillaries	23
Stop for torque reaction support to lock carrier	28

1)  Install using locking fluid; locking fluid → Parts catalogue.