11 31 090 Installing and removing/replacing chain tensioner piston
Release chain tensioner (1).
Tightening torque:11 31 5AZ .
IMPORTANT:
Have a cleaning cloth ready. A small quantity of engine oil will emerge after the screw connection has been released.
Make sure no oil runs onto the belt drive.
Make sure no oil runs onto the belt drive.
Installation note:
No sealing ring is fitted during series-production assembly.
A sealing ring must be fitted by service personnel when the chain tensioner is fitted.
If the chain tensioner is reused, its oil chamber must be drained. Place chain tensioner on a level working surface and slowly compress.
Repeat procedure twice.
Assemble engine.