Cooper Convertible (R57) L4-1.6L (N12) (2009)
Variable Valve Timing Actuator: Service and Repair
Removing and Installing/Replacing Inlet and Exhaust Adjustment Units
11 36 046 - Removing and installing/replacing inlet and exhaust adjustment units (N12)
Special tools required:
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00 9 120
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11 9 340 See: Tools and Equipment/11 9 340 Chain Tensioner, Complete
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11 9 540 See: Tools and Equipment/11 9 540 Gauge
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11 9 590 See: Tools and Equipment/11 9 590 Plug Mandrel
Important!
Always release both central bolts to adjust the timing.
The timing is not determined at firing TDC of cylinder no. 1.
Modified procedure for timing adjustment.
All pistons are in the 90° position.
Check locking of adjustment units.
Necessary preliminary tasks:
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Remove cylinder head cover See: Cylinder Head Assembly/Valve Cover/Service and Repair.
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Check timing See: Camshaft, Lifters and Push Rods/Camshaft/Testing and Inspection.