11 12 100 Removing and installing/sealing cylinder head (N14)

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

IMPORTANT: Fit new cylinder head screws.

Do not wash off bolt coating.

There must not be any coolant, water or oil present in the pocket holes (risk of corrosion and cracking) .

IMPORTANT: Different cylinder heads installed.

Build date up to 03.2009:

Cylinder head with cast no. up to

V7553471080- 15 (BMW 7534708)

Build date from 03.2009:

Cylinder head with cast no. from

V7553471080-1 6 (BMW 7577371)

When installing new injectors or cylinder heads, identification of the cylinder head's model is mandatory (fire hazard).

Necessary preliminary tasks:

Remove EXHAUST SYSTEM .
Drain COOLANT .
Drain ENGINE OIL .
Remove intake air MANIFOLD .
Remove OIL DIPSTICK .
Detach all coolant hoses from engine.
Remove oil dipstick GUIDE TUBE .
Remove CYLINDER HEAD COVER .
Remove SOLENOID VALVE from adjustment unit.
Remove INLET ADJUSTMENT UNIT .

Secure crankshaft with special tool 11 9 590 .

Fig 1: Securing Crankshaft Using Special Tool (11 9 590)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Remove and install cylinder head in installed state.

Suspend engine with engine crane (1) from lifting eye (2).

Fig 2: Positioning Engine Using Engine Crane

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Remove and install cylinder head in installed state.

Move FRONT PANEL into assembly position.

Release upper ALTERNATOR SCREWS , do not remove alternator.

Remove right ENGINE MOUNT .

Secure special tool 11 9 630 with standard bolts (1 and 2).

Fig 3: Securing Special Tool (11 9 630) With Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

IMPORTANT: If the timing chain is stowed in the gearcase, the crankshaft must no longer be rotated.

The timing chain may jam on the crankshaft gear.

Installation:

Only during assembly is the timing chain lifted out with a hook.

Fig 4: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 5: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release cylinder head bolts with special tool 11 2 250.

Release cylinder head bolts from outside inwards (10 to 1).

NOTE: Remove washers with a magnet.

Graphic shows camshafts removed.

Fig 6: Cylinder Head Bolts Removing Order

Courtesy of BMW OF NORTH AMERICA, INC.

Use special tool 11 4 471 to remove coarse gasket remnants from sealing surfaces on cylinder head and on crankcase.

IMPORTANT: Do not use any metal-cutting tools.

Fig 7: Removing Coarse Gasket Remnants From Sealing Surfaces Using Special Tool (11 4 471)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove fine gasket remnants with special tool 11 4 472.

IMPORTANT: Do not use any metal-cutting tools.

There must not be any coolant, water or oil present in the pocket holes (risk of corrosion and cracking) .

Clean all pocket holes.

Replace CYLINDER HEAD GASKET .

Fig 8: Removing Fine Gasket Remnants Using Special Tool (11 4 472)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Fit new cylinder head screws.

Do not wash off bolt coating.

Attach washers to cylinder head bolts.

Washers can drop into the engine (risk of damage!) .

Secure cylinder head bolts from inside outwards (1 to 10).

Tightening torque: 11 12 2AZ.

Fig 9: Cylinder Head Bolts Installing Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Secure screws (1).

Tightening torque: 11 12 1AZ.

Fig 10: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten bolt (1).

Tightening torque: 11 12 3AZ.

Fig 11: Identifying Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.