11 12 729 Checking cylinder head for watertightness (S65)
WARNING: This page is about a different variant/trim than selected.
NOTE:
Special tool 11 5 230 can be used for both cylinder heads.
Necessary preliminary tasks:
- Remove cylinder head See 1112105 REMOVING AND INSTALLING LEFT CYLINDER HEAD (S65) or 1112106 REMOVING AND INSTALLING RIGHT CYLINDER HEAD (S65) .
- Disassemble cylinder head . See 1134552 REMOVING AND INSTALLING/REPLACING ALL VALVES (S65) , 1134715 REPLACING ALL VALVE SPRINGS (S65) or 1134560 REPLACING ALL VALVE STEM SEALS (S65) .
Secure special tool 11 5 231 with old cylinder head bolts.
Secure special tool 11 5 235 with special tool 11 5 237.
NOTE:
Picture shows S85.
Secure special tool 11 9 961 with special tool 11 5 237 to 10 Nm.
NOTE:
Immerse cylinder head in a water bath.
Test pressure: 4.5 bar.
Check cylinder head for escaping air (cracks).
If necessary, add cleaning agent to water bath.
Assemble engine.