Cooper Convertible (R57) L4-1.6L (N12) (2009)
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Timing Chain Tensioner: Service and Repair
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).
Tightening torque:11 31 4AZ See: Specifications/Mechanical Specifications/11 31 Camshaft.
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.
Assemble engine.
