A4 Mk2
| Toothed belt drive with hydraulically damped tensioning roller - exploded view |
| 1 - | Toothed belt cover (top) |
| q | Engage carefully in centre toothed belt cover when installing |
| 2 - | Toothed belt |
| q | Check for wear |
| q | Before removing, mark direction of rotation with chalk or felt-tipped pen. If the belt runs in the opposite direction when it is refitted, this can cause breakage |
| q | Removing → Chapter |
| q | Installing (adjusting valve timing) → Anchor |
| 3 - | 20 Nm + turn 45° further |
| 4 - | Tensioning roller |
| 5 - | 100 Nm |
| q | Use counterhold tool -T10051- when loosening and tightening → Chapter „Removing and installing camshaft“ |
| 6 - | 25 Nm |
| 7 - | Camshaft sprocket |
| q | Mark installation position |
| 8 - | Hub |
| q | With sender wheel for Hall sender -G40- |
| q | To remove, use puller -T10052- → Chapter „Removing and installing camshaft“ |
| 9 - | 10 Nm |
| q | Apply locking fluid when installing; refer to → Electronic parts catalogue |
| 10 - | Toothed belt cover (rear) |
| 11 - | Rubber grommet |
| q | Renew if damaged |
| 12 - | Tensioner for toothed belt |
| 13 - | Idler roller |
| 14 - | Coolant pump |
| q | Removing and installing → Chapter |
| 15 - | Crankshaft sprocket |
| q | Contact surface between sprocket and crankshaft must be free of oil |
| q | Can only be installed in one position |
| 16 - | 120 Nm + turn 90° further |
| q | Renew |
| q | Do not lubricate with oil |
| q | Use counterhold tool -3415- when loosening and tightening → Chapter „Renewing crankshaft oil seal (pulley end)“ |
| 17 - | 15 Nm |
| 18 - | 20 Nm |
| 19 - | Toothed belt cover (bottom) |
| 20 - | Vibration damper |
| q | With pulley for poly V-belt |
| q | Can only be installed in one position. Holes are off-set |
| 21 - | 10 Nm + turn 90° further |
| q | Renew |
| 22 - | Cover cap |
| 23 - | Toothed belt cover (centre) |
| q | To remove, take out top toothed belt cover and unbolt poly V-belt tensioner |
