A4 Mk2
| Toothed belt drive - exploded view |
| 1 - | 30 Nm + 90° (1/4 turn) further |
| q | Self-locking |
| q | Renew |
| 2 - | Washer |
| 3 - | 30 Nm + 90° (1/4 turn) further |
| q | Self-locking |
| q | Renew |
| 4 - | Tensioning roller |
| 5 - | Tensioning lever |
| q | Fit washer → Item underneath |
| 6 - | Washer |
| q | For tensioning lever |
| 7 - | Toothed belt |
| 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 | Check for wear |
| q | Do not kink |
| q | Removing → Chapter |
| q | Installing (adjusting valve timing) → Anchor |
| 8 - | 45 Nm |
| 9 - | Toothed belt sprocket (exhaust camshaft) |
| q | For cylinder bank 1 (right-side), with damper |
| q | With camshaft adjuster |
| q | Identification: “Auslass” (exhaust) |
| 10 - | Toothed belt sprocket (inlet camshaft) |
| q | For cylinder bank 1 (right-side) |
| q | With camshaft adjuster |
| q | Identification: “Einlass” (inlet) |
| 11 - | 10 Nm |
| q | Self-locking |
| q | Renew |
| 12 - | Bracket for idler roller |
| 13 - | 10 Nm |
| q | Self-locking |
| q | Renew |
| 14 - | Toothed belt cover (rear right) |
| 15 - | Idler roller |
| 16 - | 10 Nm |
| 17 - | 10 Nm |
| 18 - | Mechanical coolant pump |
| q | Removing and installing → Chapter |
| 19 - | Gasket |
| q | Renew |
| 20 - | Toothed belt sprocket (inlet camshaft) |
| q | For cylinder bank 2 (left-side) |
| q | With camshaft adjuster |
| q | Identification: “Einlass” (inlet) |
| 21 - | Toothed belt cover (rear left) |
| 22 - | 10 Nm |
| q | Self-locking |
| q | Renew |
| 23 - | Toothed belt sprocket (exhaust camshaft) |
| q | For cylinder bank 2 (left-side), without damper |
| q | With camshaft adjuster |
| q | Identification: “Auslass” (exhaust) |
| 24 - | 100 Nm |
| q | Use camshaft clamp -T40030- when loosening and tightening |
| 25 - | O-ring |
| q | Renew |
| 26 - | Sealing cap |
| 27 - | Circlip |
| 28 - | Diamond-coated washer for toothed belt sprocket |
| q | Renew washer if toothed belt sprocket is removed |
| 29 - | Eccentric adjuster |
| 30 - | 45 Nm |
| 31 - | Crankshaft sprocket |
| 32 - | Central bolt: 200 Nm + 180° (1/2 turn) further |
| q | Renew |
| q | Do not additionally lubricate |
| q | Use locking pin -T40026- when loosening and tightening |
| q | Screwing in locking pin -T40026- → Anchor |
| q | Renew diamond-coated washer → Item if removed |
| q | Contact surfaces between toothed belt sprocket, diamond-coated washer and crankshaft must be free of oil |
| q | Can only be installed in one position |
| q | Depending on version: with or without thrust washer. See note → Chapter |
| 33 - | Tensioner for toothed belt |
| 34 - | 10 Nm |
