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

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

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.

Fig 3: Checking Dowel Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Fit new cylinder-head seal.

Put the cylinder head on.

NOTE: Cylinder head bolt (7) cannot be inserted yet.

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate eccentric shaft at dihedral head as shown in illustration and hold in this position.

Fig 5: Rotating Eccentric Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

Insert cylinder head bolt (7).

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 6: Rotating Eccentric Shaft Back To Minimum Stroke Position

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: 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 7: 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 8: Inserting Screws Between Cylinder Head And Timing Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Insert and tighten down guide rail screw.

Fig 9: Inserting Guide Rail Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Open plug (1).

Fig 10: Locating Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Grip at dihedron and release screw (1). Convert lever (2) with roller.

Fig 11: Removing Lever

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Levers (2) with rollers of cylinders 1 to 4 and 5 to 8 are different and must not be mixed up.

NOTE: Spring mount (1) has a locating pin opposite screw.

Attach spring to spring mount (1).

Fig 12: Attaching Spring To Spring Mount

Courtesy of BMW OF NORTH AMERICA, INC.

Insert locating pin of spring mount (1) into locating bore in cylinder head.

Install screw and tighten down.

Rotate eccentric shaft at dihedral head as illustrated in order to reduce tension on torsion spring (1).

Fig 13: Reducing Tension On Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Pretension torsion spring (1) with a cable strap (2) and carefully fit on roller (3).

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 14: Rotating Eccentric Shaft Back To Minimum Stroke Position

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration with engine removed.

Install eccentric shaft sensor (2).

Fig 15: Installing Eccentric Shaft Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down chain tensioning piston (1).

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

Fig 16: Tightening Down Chain Tensioning Piston

Courtesy of BMW OF NORTH AMERICA, INC.

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

Assemble engine.