Cooper Convertible (R57) L4-1.6L (N12) (2009)
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Timing Chain: Service and Repair
11 31 051 - Replacing timing chain (N12)
Special tools required:
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00 9 120
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11 9 280 See: Tools and Equipment/11 9 280 Holder
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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
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11 9 630 See: Tools and Equipment/11 9 630 Support bracket
Important!
Modified procedure for timing adjustment.
The timing is not determined at firing TDC of cylinder no. 1.
All pistons are in the 90° position.
Observe direction of engine rotation (direction of rotation always clockwise when viewed towards timing drive side).
Necessary preliminary tasks:
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Remove cylinder head cover See: Cylinder Head Assembly/Valve Cover/Service and Repair.
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Remove all spark plugs.
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Remove vibration damper See: Cylinder Block Assembly/Harmonic Balancer - Crankshaft Pulley/Service and Repair.
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Remove chain tensioner See: Timing Chain Tensioner/Service and Repair.
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Remove both VANOS adjustment units See: Variable Valve Timing/Variable Valve Timing Actuator/Service and Repair/Removing and
Installing/Replacing Inlet and Exhaust Adjustment Units.
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Remove PTFE ring See: Seals and Gaskets/Front Crankshaft Seal/Service and Repair at front.
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Remove belt tensioner See: Drive Belts, Mounts, Brackets and Accessories/Drive Belt Tensioner/Service and Repair/Replacing Tensioning Device
for Alternator Drive Belt.
