Timing Chain Tensioner: Service and Repair

11 31 090 Installing and removing/replacing chain tensioner piston (N52T)





Release chain tensioner (1).

Tightening torque 11 31 4AZ.

Important!
Have a cleaning cloth ready. A small quantity of engine oil will emerge after the screw connection has been released.
Make sure no engine oil runs onto belt drive.

Installation:
No sealing ring is fitted during series 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.