Leon Mk1
| Assembly overview |
| 1 - | 40 Nm +1/4 turn further (90º) |
| q | Left-hand thread. |
| q | Replace |
| 2 - | Camshaft adjuster |
| q | Must not be dismantled |
| q | Removing and installing → Chapter. |
| 3 - | Camshaft wheels |
| q | Note position when installing timing chain. |
| 4 - | O ring |
| q | Replace if damaged |
| q | Before installing, coat lightly with engine oil. |
| 5 - | Camshaft control valve 1 -N205- |
| 6 - | 10 Nm |
| 7 - | 10 Nm +1/4 turn further (90º) |
| q | Replace |
| q | Tighten from centre outwards |
| 8 - | Camshaft housing |
| q | Removing and installing → Chapter. |
| q | Remove old sealant residues |
| q | Before installing, coat with sealant -D 154 103 A1-. |
| q | When installing, fit vertically from above onto studs and dowel pins. |
| 9 - | 10 Nm |
| 10 - | Plug |
| q | For inlet camshaft. |
| q | For exhaust camshaft. |
| 11 - | Roller rocker arms |
| q | Check roller bearing. |
| q | Lubricate contact surface |
| q | ?When installing, secure to support element using securing clip. |
| 12 - | Cones |
| 13 - | Valve stem seal |
| q | Replace |
| 14 - | Supporting element |
| q | Check oil spray holes. |
| q | With hydraulic valve clearance compensation. |
| q | Do not interchange |
| q | Before installing, check camshaft axial clearance → Chapter. |
| q | Lubricate contact surface |
| 15 - | Valve guide |
| q | check → Chapter |
| 16 - | Valve spring |
| q | To remove and install with cylinder head removed, use valve spring tool -3362-. |
| q | When cylinder head is installed → Chapter |
| 17 - | Cylinder head |
| q | Removing and installing → Chapter. |
| q | Reworking valve seat → Chapter. |
| q | Reworking sealing surface → Fig. |
| 18 - | Valves: |
| q | Not to be reworked; only grinding-in permissible |
| q | Valve dimensions → Fig. |
| 19 - | Exhaust camshaft |
| q | Do not interchange with inlet camshaft. |
| q | check the axial play → Chapter |
| q | Coat with oil before inserting (also axial bearing shoulder). |
| 20 - | Guide sleeve |
| 21 - | Supply camshaft |
| q | With cam for high-pressure pump |
| q | Before removing, remove and renew bucket tappet for high-pressure pump. |
| q | Do not interchange with exhaust camshaft. |
| q | check the axial play → Chapter |
| q | Coat with oil before inserting (also axial bearing shoulder). |
| 22 - | 50 Nm +1/4 turn further (90º) |
| q | Replace |
Note
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