11 12 000 Removing and installing/sealing cylinder head cover (B48AO0)

Necessary preliminary tasks: 

• Remove CLEAN AIR PIPE
• Remove ALL INJECTORS
• Remove FEED LINE
• Remove HIGH PRESSURE PUMP
• Remove BOTH ACTUATORS 
• Release WIRING HARNESS for injectors and sensor system in area of cylinder head cover.

Removal: 

Slacken nut (1).

Remove holder (2).

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Detach coolant lines (1) from holder.

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Attention! 

Have a cleaning cloth ready. A small quantity of engine oil will escape after the screw connection has been released.

Make sure no engine oil runs onto belt drive.

Release screw (1).

Pull off oil feed line (2) from cylinder head.

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Release screws in the sequence 15-1  .

Remove cylinder head cover.

Replacement: 

• Remount PULSE SENSOR ON INTAKE CAMSHAFT
• Remount PULSE SENSOR ON EXHAUST CAMSHAFT

Installation: 

Parts:  Replace profile seal (1).

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Position cylinder head cover.

Attention!

Risk of damage to cylinder head cover!

Make sure that the cylinder head cover does not touch the high pressure pump bracket!

Join all cylinder head cover screws for 1/2 revolution in the sequence 1-15  .

Tighten cylinder head cover screws in the sequence 1-15  .

Tightening torque: 11 12 3AZ .

Parts:  Replace O-ring (1).

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Install oil feed line (2).

Tighten screw (1).

Tightening torque 11 42 4AZ .

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Clip in coolant line (1) into the holder.

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Position holder (2) on cylinder head.

Tighten nut (2).

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Required follow-up work: 

• Install ALL INJECTORS
• Install HIGH PRESSURE PUMP
• Install FEED LINE
• Install BOTH ACTUATORS 
• Route and connect WIRING HARNESS for injectors and sensor system
• Install CLEAN AIR PIPE