Cooper (R56) L4-1.6L (N12) (2008)
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Timing Chain: Service and Repair
11 31 090 Installing and Removing/Replacing Chain Tensioner Piston
11 31 090 Installing and removing/replacing chain tensioner piston (N12)
Necessary preliminary tasks:
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Remove throttle valves.
Release chain tensioner (1).
Tighten Chain tensioner to cylinder head
4AZ Chain tensioner to cylinder head
M22 x 1.5 ......................................................................................................................................................................................................... 65 Nm
Note: Replace sealing ring
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.
Installation:
Replace sealing ring.
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.
