11 12 106 Removing and installing right cylinder head (N62 from 9 / 03 and N62TU): Installation:

Replace sealing ring.

Tightening torque of drain plug 11 11 5AZ. Refer to ENGINE - TIGHTENING TORQUES .

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

Remove ignition coils on cylinder bank 1 to 4.

Remove servomotor for right eccentric shaft.

Remove intake air manifold. Refer to 11 61 050 Removing and installing intake air manifold (N62) .

Remove right cylinder head cover. Refer to 11 12 006 Removing and installing / sealing right cylinder head cover (N62 / N62TU) .

Remove right timing case cover. Refer to 11 14 085 Removing and installing top right timing case cover (N62 / N62TU) .

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

Remove spark plugs on cylinder bank 1 to 4.

Remove vent hose on cylinder head.

Detach hose (1) on check valve (4).

Fig 1: Detaching Hose On Check Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2).

Release screw (3) and remove check valve (4), tube (5) and spacer bushing.

Unclip cables (6 and 7).

Installation: 

Replace sealing ring on tube (5) and coat with antiseize agent.

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).

Replace sealing ring.

Install chain tensioning piston (1) and initially tighten screw connection without play.

Fig 1: Installing Chain Tensioning Piston

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Locating Joint Between Engine Block And Timing Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fit new cylinder-head seal.

Fig 3: Checking Dowel Sleeves

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Put the cylinder head on.

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

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

Fig 4: Right Cylinder Head Bolts Tightening/Loosening Sequence (N62)

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 11 12 8AZ. Refer to ENGINE - TIGHTENING TORQUES .

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

Fig 5: Inserting Screws Between Cylinder Head And Timing Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Insert screw plug (1).

Fig 6: Inserting Screw Plug

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Installation:

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

Insert and tighten down guide rail screw.

Fig 7: Inserting And Tightening Guide Rail Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Install eccentric shaft sensor (2).

Fig 8: Installing Eccentric Shaft Sensor

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Tighten down chain tensioning piston (1).

Fig 9: Tightening Chain Tensioning Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 11 31 8AZ. Refer to ENGINE - TIGHTENING TORQUES .

Install inlet and exhaust adjustment unit on right side. Refer to 11 36 048 Removing and installing/replacing inlet and exhaust adjustment units on right side (N62) .

Assemble engine.