Valve: Service and Repair

11 34 552 - Removing and installing or replacing all valves (N51)





Special tools required:
- 11 4 480 11 4 480 Oddments Tray





Necessary preliminary tasks:
- Remove cylinder head Service and Repair.
- Remove intermediate lever Removing and Installing/Replacing Intermediate Levers.
- Remove eccentric shaft Removing and Installing/Replacing Eccentric Shaft.
- Remove inlet camshaft Removing and Installing/Replacing Inlet Camshaft.
- Remove exhaust camshaft Removing and Installing/Replacing Exhaust Camshaft.
- Remove roller cam follower. Service and Repair
- Remove valve springs Service and Repair.
- Remove valve stem seals Service and Repair.





Arrangement:
1) - Valve
2) - Valve stem seal with spring plate, bottom
3) - Valve spring
4) - Top plate spring
5) - Valve tapers
If the valves are to be reused, set then down in special tool 11 4 480 in a tidy and orderly fashion.





Assemble engine.
Check function of DME; if necessary, readjust uniform mixture distribution.