Machining valve seat rings - RA05001042910X(05-2910)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Preceding work:
Valve guides inspected (05-2845)
Operation no. of operation texts and work units or standard texts and flat rates:
| Valve seats | machine.
NOTE:
Pay attention to operating instructions of tool manufacturer. Use SERDI shape turning tool number 41196. Use Hunger turning tool number 23m or 24m. |
| Dimensions | maintain as stated in table. |
| Leaktightness | check with valve installed. |
| Valve seat width (b) | measure.
NOTE:
If necessary, correct valve seat width (b) with correction angles (Hunger) 23m and 24m (angles α and β).
|
| Valves | insert and measure clearance from valve stem end to camshaft bearing base (see 01-480). |
| Data | Inlet valve, exhaust valve |
|---|---|
| Valve seat width (b) | 0.90 - 1.10 mm |
| Valve seat angle (α) | 45° |
| Correction angle at top (β) | 30° |
| Correction angle at bottom (β) | 60° |
| Permissible radial runout of valve seat | 0.03mm |
COMMERCIALLY AVAILABLE TOOLS
| Valve seat turning tool | e.g. | SERDI
GmbH Bregenzstr. 69 88131 Lindau |
| Shape turning tool | e.g. | SERDI
GmbH Bregenzstr. 69 88131 Lindau Order no. 41196 |
| Cylinder head clamping device | e.g. | Hunger 81375 Munchen 70 Order no. 221.60.000 |
| Valve seat turning tool | e.g. | Hunger 81375 Munchen 70 Model VSDN 1/45/30 Order no. 236.03.308 |
| Test set for valve seats | e.g. | Hunger 81375 Munchen 70 Order no. 216.93.300 |
| Turning tools for valve seat and correction angles (β) and (γ) | e.g. | Hunger 81375 Munchen 70 |
| 23m | Order no. 216.64.235 | |
| 24m | Order no. 216.62.170 |