11 14 151 Replacing crankshaft seal on transmission side (N20, N26)

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Special tools required:

Necessary preliminary tasks:

Remove FLYWHEEL .

IMPORTANT: Magnet wheel (1) is magnetic.
Keep magnet wheel (1) in a plastic bag away from swarf.

Remove magnet wheel (1) from crankshaft.

Installation note:

Check the fitting sleeve for damage.

Note the installation position of the magnet wheel.

Fig 1: Identifying Magnet Wheel On Crankshaft

G09844477

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw on pulse sensor (1).

Slide PULSE SENSOR (2) upwards.

Fig 2: Identifying Pulse Sensor With Screw

G09844478

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Drill size maximum 2, 5 mm.
Remove swarf immediately.

Drill a hole with a drill (1) in the radial shaft seal (see arrow).

Fig 3: Drilling Hole On Radial Shaft Seal

G09844479

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Remove swarf from the radial shaft seal (1).

Fig 4: Identifying Swarf From Radial Shaft Seal

G09844480

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage at the crankcase and on the running surface of the crankshaft.
Immediately carefully remove residual swarf.

Screw in special tool 23 0 490 (puller) in direction of arrow.

Drive out radial shaft seal with impact weight in direction of arrow.

Fig 5: Driving Out Radial Shaft Seal With Impact Weight

G09844481

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare radial shaft seal (1) on special tool 11 8 220 .

Fig 6: Identifying Radial Shaft Seal On Special Tool 11 8 220

G06904210

Courtesy of BMW OF NORTH AMERICA, INC.

Position the radial shaft seal (1) with special tool 11 8 220 on the crankshaft.

Fig 7: Positioning Radial Shaft Seal With Special Tool 11 8 220 On Crankshaft

G06904211

Courtesy of BMW OF NORTH AMERICA, INC.

Brush radial shaft seal (1) over the special tool 11 8 220 .

Move radial shaft seal (1) parallel up against the crankcase.

Fig 8: Moving Radial Shaft Seal Parallel Up Against Crankcase

G06904212

Courtesy of BMW OF NORTH AMERICA, INC.

Fasten special tool 11 9 182 with special tool 11 9 184 on the crankshaft.

Fig 9: Identifying Special Tool 11 9 182 With 11 9 184 On Crankshaft

G09844485

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Prepare special tool 11 9 181 for installation.

Connect special tool 2 212 827 onto special tool 11 9 181 .

Fig 10: Connecting Special Tool 2 212 827 Onto Special Tool

G09919710

Courtesy of BMW OF NORTH AMERICA, INC.

Pull on radial shaft seal with special tools 11 9 181 and 2 212 827 in combination with special tool 11 9 183 .

Fig 11: Pulling On Radial Shaft Seal With Special Tools 11 9 181

G09919711

Courtesy of BMW OF NORTH AMERICA, INC.

Screw on radial shaft seal with special tool 11 9 183 to limit position.

Fig 12: Screwing On Radial Shaft Seal With Special Tool 11 9 183 To Limit Position

G06904216

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.