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Home >> BMW >> 2004 >> X5 30i, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine - Repair (N62)) >> Cylinder Head With Cover >> 11 12 106 Removing and installing right cylinder head (N62 from 9/03 and N62TU)

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

WARNING: This page is about a different variant/trim than selected.

(Cylinder Bank 1 To 4) 

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 right 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 right side of engine block.

Drain off coolant and dispose of correctly.

Installation: 

Replace sealing ring.

Tightening torque of drain plug, see ENGINE - TIGHTENING TORQUES .

Top up coolant. Vent cooling system and check for leaks.

Remove ignition coils on cylinder bank 1 to 4. See IGNITION COIL .

Remove servomotor for right eccentric shaft.

Remove right cylinder head  cover.

Remove intake air manifold .

Remove right timing case  cover.

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.

NOTE: Illustration with engine removed.

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

Release screws (2).

IMPORTANT: A spacer bushing is secured with screw (3) behind tube (5).

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.

Fig 1: Removing Check Valve, Tube And Spacer Bushing
G03266770Courtesy of BMW OF NORTH AMERICA, INC.

Removal: 

Removal of cylinder head is described separately from installation.

Remove inlet and exhaust adjustment unit on right side.

Slacken off chain tensioning piston (1) by approx. one turn.

Fig 2: Removing Chain Tensioning Piston
G03266771Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Illustration with engine removed.

Remove eccentric shaft sensor (2).

Fig 3: Removing Eccentric Shaft Sensor
G03266772Courtesy of BMW OF NORTH AMERICA, INC.

Detach guide rail from cylinder head.

Fig 4: Detaching Guide Rail From Cylinder Head
G03266773Courtesy of BMW OF NORTH AMERICA, INC.

Release screws between cylinder head and timing case cover.

Fig 5: Releasing Screws Between Cylinder Head And Timing Case Cover
G03266774Courtesy 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 6: Releasing Cylinder-Head Bolts
G03266775Courtesy of BMW OF NORTH AMERICA, INC.

Remove chain tensioning piston (1).

Fig 7: Removing Chain Tensioning Piston
G03266776Courtesy of BMW OF NORTH AMERICA, INC.

Place chain tensioning piston (1) on a level surface and compress slowly and carefully.

Repeat this procedure twice.

Fig 8: Placing Chain Tensioning Piston On Level Surface
G03266777Courtesy 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).

Replace sealing ring.

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

Fig 9: Installing Chain Tensioning Piston
G03266778Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 10: Coating Joint Between Engine Block And Timing Case Cover With Drei Bond 1209
G03266779Courtesy of BMW OF NORTH AMERICA, INC.

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

Fit new cylinder-head seal.

Fig 11: Checking Dowel Sleeves For Damage
G03266780Courtesy 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, see ENGINE - TIGHTENING TORQUES .

Fig 12: Tightening Cylinder-Head Bolts
G03266781Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 13: Tightening Screws Between Cylinder Head And Timing Case Cover
G03266782Courtesy of BMW OF NORTH AMERICA, INC.

Insert and tighten down guide rail screw.

Fig 14: Tightening Guide Rail Screw
G03266783Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Illustration with engine removed.

Install eccentric shaft sensor (2).

Fig 15: Installing Eccentric Shaft Sensor
G03266784Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down chain tensioning piston (1).

Tightening torque, see ENGINE - TIGHTENING TORQUES .

Fig 16: Tightening Chain Tensioning Piston
G03266785Courtesy of BMW OF NORTH AMERICA, INC.

Install inlet and exhaust adjustment unit on right side.

Assemble engine.

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