11 21 500 Replacing crankshaft (N52)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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

Necessary preliminary work:

Remove ENGINE .
Mount engine on ASSEMBLY STAND .
Remove VIBRATION ABSORBER .
Remove OIL SUMP .
Remove OIL PUMP .
Remove timing CHAIN MODULE .
Remove oil pump/vacuum pump CHAIN MODULE .
Remove CYLINDER HEAD .
Remove FLYWHEEL .
Remove all PISTONS .

Release screws (1).

Tightening torque 11 13 11AZ .

Installation note:

Replace aluminum screws .

Remove oil deflector (2).

Fig 1: Identifying Oil Deflector And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release aluminum screws (1).

Release aluminum screws (2).

Installation note:

Replace aluminum screws .

Fig 2: Identifying Aluminum Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release aluminum screws (1).

Installation note:

Replace aluminum screws .

NOTE: Graphic shows N52.

Fig 3: Identifying Aluminum Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Unfasten screws (2).

Installation note:

Replace aluminum screws .

Release steel screws (14 to 1) from outside inwards.

Remove crankcase lower section upwards.

Fig 4: Crankcase Lower Section Bolts Tightening/Loosening Sequence (N52)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Remove crankshaft with aid of a second person.

Weight of crankshaft approx. 25 kg.

Remove crankshaft (1) upward in direction of arrow.

Remove BEARING SHELLS (2) and guide bearing shell (3), replace if necessary.

Fig 5: Identifying Bearing Shells And Guide Bearing Shell

Courtesy of BMW OF NORTH AMERICA, INC.

Clean all sealing surfaces (1) with special tool 11 4 470 .

Fig 6: Identifying Sealing Surfaces

Courtesy of BMW OF NORTH AMERICA, INC.

Check fitting bushes for damage and secure seating; replace if necessary.

Install all BEARING SHELLS .

Installation note:

Oil all bearing points adequately with engine oil.

Fig 7: Identifying Fitting Bushes

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Insert crankshaft with aid of a second person.
Weight of crankshaft approx. 25 kg.

Insert crankshaft (1).

Fit crankcase lower section (watch fitting bushes).

Fig 8: Identifying Crankshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Follow tightening/torque sequence for the steel bolts (1 to 14).

Fig 9: Crankcase Lower Section Bolts Tightening/Loosening Sequence (N52)

Courtesy of BMW OF NORTH AMERICA, INC.

JOIN steel bolts (1).

Fig 10: Joining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Mark across all steel bolts (1) with a colored mark.

Fig 11: Identifying Colored Mark Across Head Of Crankshaft Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten all steel bolts with a special tool 00 9 120 .

Tightening torque 11 11 1AZ .

Installation note:

All steel bolts must be positioned the same with respect to the colored mark after being fastened (see Fig 9).

Fig 12: Re-Tightening All Screws Using Special Tool (00 9 120)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Aluminum bolts (1) and (2) can have a blue colored mark.

Aluminum screws/bolts are not magnetic .

Fig 13: Identifying Aluminum Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: In the case of aluminum screws, joining torque and angle of rotation must be observed without fail.

JOIN all aluminum bolts (1) from inside toward the outside.

Tightening torque 11 11 2AZ .

Fig 14: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Mark across all aluminum bolts (1) with a colored mark.

Fig 15: Identifying Colored Mark Across Heads Of Aluminum Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten all aluminum bolts (1) only with special tool 00 9 120 .

Tightening torque 11 11 3AZ .

Tightening torque 11 11 4AZ .

Installation note:

All aluminum bolts must be equally positioned with respect to the colored mark after being fastened.

Fig 16: Tightening Aluminum Bolts Using Special Tool (00 9 120)

Courtesy of BMW OF NORTH AMERICA, INC.

Fit special tool 11 6 252 with magnetic foot on special tool 11 4 440 .

Clamp special tool 11 6 251 on special tool 11 6 252 .

Position special tool 11 6 251 with button on the flat side of the crankshaft.

Press crankshaft (1) in direction of arrow up to stop.

Set dial gauge with knurled screw (2) on zero.

Fig 17: Pressing Crankshaft Up To Stop And Setting Dial Gauge On Zero

Courtesy of BMW OF NORTH AMERICA, INC.

Press crankshaft (1) in direction of arrow from right to left up to stop.

Determine CRANKSHAFT AXIAL CLEARANCE .

Fig 18: Pressing Crankshaft Up To Stop

Courtesy of BMW OF NORTH AMERICA, INC.

Turn crankshaft (1) via the central bolt with special tool 00 2 010 to determine the COEFFICIENT OF FRICTION .

Fig 19: Turning Crankshaft Central Bolt Using Special Tool (00 2 010)

Courtesy of BMW OF NORTH AMERICA, INC.

Drive both injector nozzles (1) on left and right on crankcase into the bore hole (see arrow) with special tool 11 9 360 .

Installation note:

Replace injector nozzles (1).

Fig 20: Driving-In Injector Nozzle Into Bore Hole Using Special Tool (11 9 360)

Courtesy of BMW OF NORTH AMERICA, INC.

Drive in both injector nozzles (1) on left and right into crankcase with special tool 11 9 360 .

Fig 21: Driving-In Injector Nozzle Into Crankcase Using Special Tool (11 9 360)

Courtesy of BMW OF NORTH AMERICA, INC.

Drive injector nozzle (1) all the way in.

Fig 22: Identifying Injector Nozzle

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Use PRIMER 1.3 AND LIQUID SEALING COMPOUND 1.4 .

Prepare liquid sealing compound (2) in special tool 11 4 370 .

Screw on nozzle (1) for injecting sealing compound.

Fig 23: Identifying Injection Nozzle, Special Tool With Sealing Compound, And Bottle Of Loctite Primer 171000

Courtesy of BMW OF NORTH AMERICA, INC.

Slowly and evenly insert liquid sealing compound (1) via the injector nozzle in direction of arrow using special tool 11 4 370 .

Graphic N42.

Fig 24: Inserting Liquid Sealing Compound Using Special Tool (11 4 370)

Courtesy of BMW OF NORTH AMERICA, INC.

Replace CRANKSHAFT SEAL at front.

Replace CRANKSHAFT RADIAL SEAL (transmission side).

Assemble engine.