BMW 7 Series: Removing And Installing/Sealing Left Cylinder Head Cover (N63)

Necessary preliminary work

• Remove ACOUSTIC COVER
• Disconnect NEGATIVE BATTERY TERMINAL
• Remove left CHARGE AIR COOLER
• Remove INTAKE FILTER HOUSING
• Remove EXPANSION TANK.
• Remove coolant pipe from cylinder head cover (E71 only)
• Remove coolant valve for heater feed line
• Disconnect FUEL FEED LINE
• Detach wiring harness for injectors and lay to one side
• Remove IGNITION COILS , cylinders 5-8
• Remove INJECTORS , cylinders 5-8
• Remove HIGH-PRESSURE PUMP

Release bolts in sequence (17 to 1).

Remove cylinder head cover.

Fig. 67: Identifying Cylinder Head Cover Bolts Releasing Sequence

Clean sealing surface (1) with special tool 11 4 470.

Installation note:

Replace gasket (2)

Fig. 68: Identifying Sealing Surface And Gasket

Installation note: Renew profile seal of cylinder head cover

Fig. 69: Identifying Profile Seal Of Cylinder Head Cover

Installation note: It is important to join screw (1) for exact positioning of the camshaft sensors.

Fit cylinder head cover.

Position screw (1).

Release screw (1) by 90º.

Fig. 70: Identifying Screw Of Camshaft Sensors

Secure cylinder head cover in sequence (1 to 17) in two work steps.

Tightening torque 11 12 3AZ.

Fig. 71: Identifying Cylinder Head Cover Bolts Releasing Sequence

Assemble engine.

REMOVING AND INSTALLING/SEALING RIGHT CYLINDER HEAD COVER (N63)

Necessary preliminary work

• Remove ACOUSTIC COVER
• Disconnect NEGATIVE BATTERY TERMINAL
• Release battery positive terminal
• Remove right INTERCOOLER
• Remove INTAKE FILTER HOUSING
• Disconnect FUEL FEED LINE
• Detach wiring harness for injectors and lay to one side
• Remove IGNITION COILS , cylinders 1-4
• Remove INJECTORS , cylinders 1-4
• Remove HIGH-PRESSURE PUMP

Release screws (1).

Tightening torque 11 12 9AZ.

Remove oil filler neck (2).

Installation note:

Replace sealing ring

Fig. 72: Identifying Oil Filler Neck And Screws

Release bolts in sequence (17 to 1).

Remove cylinder head cover.

Fig. 73: Identifying Cylinder Head Cover Bolts Releasing Sequence

Clean sealing surface (1) with special tool 11 4 470.

Installation note:

Replace gasket (2)

Fig. 74: Identifying Sealing Surface And Gasket

Installation note:

Renew profile seal of cylinder head cover

Fig. 75: Identifying Profile Seal Of Cylinder Head Cover

Installation note:

It is important to join screw (1) for exact positioning of the camshaft sensors.

Fit cylinder head cover.

Position screw (1).

Release screw (1) by 90º.

Fig. 76: Identifying Screw Of Camshaft Sensors

Secure cylinder head cover in sequence (1 to 17) in two work steps.

Tightening torque 11 12 3AZ.

Fig. 77: Identifying Cylinder Head Cover Bolts Releasing Sequence

Assemble engine.

REPLACING BOTH CYLINDER HEAD GASKETS (N63)

Necessary preliminary work

• Remove LEFT CYLINDER HEAD
• Remove RIGHT CYLINDER HEAD

INSTALLATION NOTE:

The cylinder head gasket (2) for cylinders 1-4 and cylinders 5-8 are identical.

There is no marking (TOP).

Cylinder head gasket (2) must depending on its styling be correctly positioned on the timing chain case.

Fig. 78: Identifying Fitting Sleeves And Cylinder Head Gasket

Repair gasket (+REP) is 0.3 mm thicker.

Check cylinder head for surface evenness.

Fig. 79: Identifying Cylinder Head Gasket (+REP)

Assemble engine.

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