11 41 010 Removing and installing/replacing chain module for oil pump/vacuum pump (N55) - up to 03.2012

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2018 BMW M6, 2018 BMW 650i xDrive, 2018 BMW 650i, 2018 BMW 640i xDrive, and 2018 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Remove CYLINDER HEAD COVER
Remove all SPARK PLUGS .
Remove oil sump . See REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP (N55, RWD) or REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP (N55, AWD) .
Remove DRIVE BELT
Remove drive belt TENSIONING DEVICE
Remove VIBRATION DAMPER
Remove SEALING CAP for vacuum pump
SEALING CAP for oil pump chain tensioner
Remove CHAIN TENSIONER .
Remove TIMING CHAIN .

Necessary preliminary tasks:

Remove cylinder head cover
Remove all spark plugs.
Remove oil sump
Remove drive belt
Remove drive belt tensioner
Remove vibration damper
Remove sealing cap for vacuum pump
Remove sealing cap of chain tensioner for oil pump.
Remove chain tensioner.
Remove timing chain.

Screw in special tool 11 8 650 on screw connection of belt tensioner on crankcase.

Turn camshaft sprocket with central bolt at crankshaft into position until special tool 11 0 290 can be secured.

Simultaneously secure special tool 11 0 290 to camshaft sprocket and special tool 11 8 650 .

Release screw (1) for camshaft sprocket.

Tightening torque 11 66 2AZ .

Fig 1: Releasing Screw For Camshaft Sprocket

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Sprocket must be blocked in order to release central bolt (1).

Secure special tool 2 303 793 to crankcase.

Release oil pump central bolt (1).

Tightening torque 11 41 5AZ .

Fig 2: Securing Special Tool 2 303 793 Onto Crankcase

Courtesy of BMW OF NORTH AMERICA, INC.

Remove fastener (1) in direction of arrow.

Fig 3: Removing Fastener

Courtesy of BMW OF NORTH AMERICA, INC.

Position flywheel (1) with special tool 11 0 300 in TDC setting.

Fig 4: Positioning Flywheel With Special Tool 11 0 300

Courtesy of BMW OF NORTH AMERICA, INC.

Press timing chain with chain tensioner (1) in direction of arrow.

Disconnect timing chain with special tool 11 4 120 .

Feed out camshaft sprocket (3) at hexagon head (4) of vacuum pump.

Installation note:

If the chain module is replaced, a mounting bar (2) is already pre-installed.

Fig 5: Disconnecting Timing Chain Using Special Tool 11 4 120

Courtesy of BMW OF NORTH AMERICA, INC.

Release aluminum screws (1).

Remove oil pump drive gear from the drive shaft.

Fig 6: Locating Chain Module Aluminum Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Open screw plug (1).

Tightening torque: 11 11 9AZ .

Installation note:

Replace sealing ring.

Fig 7: Identifying Screw Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Lock flywheel (1) with special tool 11 9 260 .

Fig 8: Locking Flywheel Using Special Tool 11 9 260

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not remove special tools 11 0 300 and 11 4 280 to release central bolt (1).

Release central bolt (1).

Installation note:

Release central bolt (1) with 3/4 tool (2).

Breakaway torque approx. 500 Nm.

Fig 9: Removing Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in two screws (1) and remove hub (2) in direction of arrow.

Installation note:

Replace CRANKSHAFT SEAL at front.

Fig 10: Moving Hub On Crankshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Release aluminum screw (1) with special tool 11 8 640 .

Fig 11: Removing Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Remove chain module (1) in direction of arrow.

Fig 12: Removing Chain Module

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Note direction of installation of camshaft sprocket (2).
Collar (see arrow in illustration) on camshaft sprocket (2) points to engine .
Incorrect assembly will result in engine damage .

Fig 13: Locating Collar On Camshaft Sprocket

Courtesy of BMW OF NORTH AMERICA, INC.

Insert chain module.

Secure aluminum screw (1) with special tool 11 8 640 .

Tightening torque: 11 41 3AZ .

Fig 14: Identifying Chain Module Aluminum Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Insert aluminum screws (1) for chain module.

Tightening torque 11 41 6AZ .

Installation note:

Replace aluminum screws.

Pay attention to mounting flats on oil pump drive.

Fig 15: Locating Chain Module Aluminum Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Position module (1) for oil pump drive.

Position module (2) for camshaft drive.

Insert hub (3) for vibration absorber with grip disc.

Fig 16: Inserting Hub For Vibration Absorber With Grip Disc

Courtesy of BMW OF NORTH AMERICA, INC.

Fit central bolt (1).

Secure central bolt with special tool 1 00 9 140 .

Tightening torque 11 21 1AZ .

Installation note:

Replace CRANKSHAFT SEAL at front.

Fig 17: Tightening Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.