11 12 100 Removing and installing/sealing cylinder head (M54)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required :

00 9 120

Remove both exhaust manifolds, refer to 11 62 140 REMOVING AND INSTALLING, SEALING OR REPLACING BOTH EXHAUST MANIFOLDS WITH CATALYTIC CONVERTER (M54) .

Remove intake filter housing with air-mass flow sensor.

Remove cylinder head cover, refer to 11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56) .

Remove all spark plugs.

Remove intake air manifold, refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M54) .

Open coolant drain plug on engine block. Drain and dispose of coolant.

Installation:

Replace sealing ring on drain plug.

Tightening torque, (25 N.m.).

Vent cooling system and check for leaks, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56) .

Remove coolant thermostat housing, refer to 11 53 000 REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (M52TU / M54 / M56) .

Remove coolant pipe.

NOTE: If the coolant pipe cannot be fed out: Release banjo bolt (1) and disconnect oil pressure line for VANOS adjustment unit.

Fig 1: Removing Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace O-ring on coolant pipe.

If necessary, replace sealing rings on banjo bolt (1).

Tightening torque of banjo bolt, (32 N.m.).

Removal:

Removal of cylinder head is described separately from installation.

Remove double VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Remove camshafts with bearing strips, refer to 11 31 001 REPLACING CAMSHAFT (M52TU / M54 / M56) .

Release screw connection between timing case cover and cylinder head.

Fig 2: Locating Screw Connection Between Cover And Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws, remove chain guide.

Fig 3: Identifying Chain Guide Retaining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release cylinder head bolts from outside to inside in sequence 14 to 1.

Lift off cylinder head.

Fig 4: Cylinder Head Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block; if necessary, remove traces of sealing compound with hardwood spatula. Make sure no gasket remnants drop into oil and cooling channels.

There must be no oil in the tapped holes of the engine block and the timing case cover.

Danger of cracking and distorted tightening values.

Check dowel sleeves for damage and correct installation position.

Fig 5: Locating Dowel Sleeves For Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Apply permanently elastic sealing compound Drei Bond 1209 to joints to timing case cover.

Replace cylinder head gasket.

NOTE: A 0.3 mm thick cylinder head gasket is available for cylinder heads remachined at the cylinder head gasket surface.

Put the cylinder head on.

Install new cylinder head bolts.

Apply a light coat of oil to washer contact area and thread of new cylinder head bolts.

Tighten down cylinder head bolts in sequence 1 to 14.

Tightening torque, refer to 11 12 6AZ in ENGINE - TIGHTENING TORQUES .

NOTE: Use special tool 00 9 120 for torsion angle tightening.

Fig 6: Cylinder Head Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Install chain guide.

Fig 7: Installing Chain Guide

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 8: Locating Screw Connection Between Cover And Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Install camshafts, refer to 11 31 001 REPLACING CAMSHAFT (M52TU / M54 / M56) .

Install double VANOS adjustment unit, refer to 11 36 010 REMOVING AND INSTALLING OR REPLACING DOUBLE VANOS ADJUSTMENT UNIT (M52TU / M54 / M56) .

Assemble engine.