Octavia Mk2
| Valve gear - Summary of components |
| 1 - | Exhaust valve |
| q | do not rework, only grinding in is permissible |
| q | Valve dimensions → Fig. |
| q | inspecting valve guides → Chapter |
| 2 - | Cylinder head |
| 3 - | Valve guide |
| q | check → Chapter |
| 4 - | Valve stem seal |
| 5 - | Valve spring |
| 6 - | Valve spring retainer |
| 7 - | Collets |
| 8 - | Hydraulic balancing element |
| q | do not interchange |
| q | oil contact surfaces |
| 9 - | Exhaust camshaft |
| q | removing and installing → Chapter |
| q | Checking the axial play of the camshafts → Chapter |
| q | Slack: max. 0.04 mm |
| 10 - | Cylinder head cover |
| q | with integrated camshaft bearing |
| q | removing and installing → Chapter |
| q | Cleaning and reworking sealing surface not permissible |
| q | remove old sealant residues |
| 11 - | 8 Nm + torque a further 90° (1/4 turn) |
| q | replace |
| q | order of tightening → Chapter |
| 12 - | O-ring |
| q | replace |
| q | moisten with engine oil |
| 13 - | Plug |
| 14 - | Inlet camshaft |
| q | removing and installing → Chapter |
| q | Checking the axial play of the camshafts → Chapter |
| q | Slack: max. 0.04 mm |
| 15 - | Screw cap |
| q | replace |
| q | installing: Plunge into the middle of the cover using a screwdriver and lever out. |
| q | installing: Use no sealant, press in with pressure plate -T10174 - 1...2 mm deep. |
| 16 - | Inlet valve |
| q | do not rework, only grinding in is permissible |
| q | Valve dimensions → Fig. |
| q | inspecting valve guides → Chapter |
Note
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|
| Dimension | Inlet valve | Exhaust valve | |
| Ø a | mm | 33,85 ± 0,10 | 28,0 ± 0,1 |
| Ø b | mm | 5,98 ± 0,007 | 5,965 ± 0,007 |
| c | mm | 103,97 | 101,87 |
| α | ∠° | 45 | 45 |
