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11 12 105 Removing and installing left cylinder head (N62 from 9 / 03 and N62TU)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

(Cylinder Bank 5 To 8) 

NOTE: To remove the exhaust manifolds, the engine must be secured in the installation position with the special tool and then the front axle bracket lowered.

Remove left exhaust manifold.

After Removing Exhaust Manifolds: 

Reinstall front axle bracket provisionally and remove special tool for securing engine in installation position.

Open drain plug for coolant on left side of engine block.

Drain off coolant and dispose of correctly.

Installation: 

Replace sealing ring.

Tightening torque of drain plug, refer to 11 11 5AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Top up coolant. Vent cooling system and check for leaks. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N62, N62TU) .

Remove ignition coils on cylinder bank 5 to 8.

Remove servomotor for left eccentric shaft. Refer to 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62/N62TU) .

Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N62) .

Remove left timing case cover. Refer to 11 14 080 REMOVING AND INSTALLING TOP LEFT TIMING CASE COVER (N62/N62TU) .

Disconnect plug connections and lay engine wiring harness to one side.

Remove spark plugs on cylinder bank 5 to 8.

Remove vent hose on cylinder head.

NOTE: Illustration with engine removed.

Detach hose (1) on check valve (2).

E65 Only: 

Release screws (3).

Remove tube (4) with check valve (2).

NOTE: Do not remove guide tube (5) for oil dipstick.

Installation: 

Replace sealing ring on tube (4) and coat with antiseize agent.

Fig 1: View Of Hose On Check Valve
G03269374Courtesy of BMW OF NORTH AMERICA, INC.

Removal: 

Removal of cylinder head is described separately from installation.

Remove inlet and exhaust adjustment unit on left side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62/N62TU) 

NOTE: Illustration with engine removed.

Remove eccentric shaft sensor (2).

Fig 2: Locating Eccentric Shaft Sensor
G03269375Courtesy of BMW OF NORTH AMERICA, INC.

Detach guide rail from cylinder head.

Fig 3: View Of Guide Rail In Cylinder Head
G03269376Courtesy of BMW OF NORTH AMERICA, INC.

Release screws between cylinder head and timing case cover.

Fig 4: Identifying Cylinder Head Screws
G03269377Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: At narrow points, use a socket with 3/8" drive and a short extension.

Release cylinder-head bolts in sequence 10-1.

Lift off cylinder head.

Lift off cylinder head gasket.

Fig 5: Left Cylinder Head Bolts Tightening/Loosening Sequence (N62)
G03269378Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and crankcase; if necessary, remove gasket debris with wooden scraper. Make sure no gasket debris drops into the oil and coolant ducts.

Threaded bores in engine block must be free of dirt and oil (risk of cracking).

Coat joint between engine block and timing case cover with Drei Bond 1209.

Fig 6: Identifying Sealant Application Areas On Engine Block
G03269379Courtesy of BMW OF NORTH AMERICA, INC.

Check dowel sleeves (1) for damage and correct installation position.

Fit new cylinder-head seal.

Fig 7: Locating Dowel Sleeves
G03269380Courtesy of BMW OF NORTH AMERICA, INC.

Put the cylinder head on.

NOTE: Do not wash off bolt coating. Insert new cylinder head bolts and initially tighten so that they are free of play.

At narrow points, use a socket with 3/8" drive and a short extension.

Tighten down the cylinder-head bolts in order 1-10.

Tightening torque, refer to 11 12 8AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 8: Left Cylinder Head Bolts Tightening/Loosening Sequence (N62)
G03269381Courtesy of BMW OF NORTH AMERICA, INC.

Insert and tighten down screws between cylinder head and timing case cover.

Fig 9: View Of Screws Between Cylinder Head And Timing Case Cover
G03269382Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Insert screw plug (1).

Installation: 

Failure to install the screw (1) will result in a malfunction in the VANOS control.

Fig 10: Locating Screw Plugs
G00432304Courtesy of BMW OF NORTH AMERICA, INC.

Insert and tighten down guide rail screw.

Fig 11: Inserting And Tightening Down Guide Rail Screw
G03269383Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Illustration with engine removed.

Install eccentric shaft sensor (2).

Fig 12: Installing Eccentric Shaft Sensor
G03269384Courtesy of BMW OF NORTH AMERICA, INC.

Install inlet and exhaust adjustment unit on left side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62/N62TU) .

Assemble engine.

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