2.0L engine
| Valve seat | Inlet valve | Exhaust valve |
| Valve seat width | 1.2 – 1.7 mm | 1.7 – 2.0 mm |
| Valve seat angle | 45° | 45° |
| Correction angle from above | 15° | 15° |
| Correction angle below | 65° | 65° |
| Permissible radial runout | 0.03 mm | 0.03 mm |
| Min. Distance "a1" | 0.1 – 0.5 mm | 0.1 – 0.5 mm |
| Min. Distance "a2" | -1.0 mm | -1.0 mm |
a1 – minimum distance between the valve plate surface and the lower edge of the cylinder head for new valves and valve seats.
a2 – minimum distance between the surface of the valve plate and the lower edge of the cylinder head after reworking the valve seats and grinding the valves.
Article was borrowed from the website www.mercedesman.ru