11 14 151 Replacing radial crankshaft seal on transmission side (N55)

Special tools required:

11 8 220
23 0 490 (puller)
11 9 180
11 9 183

Necessary preliminary work:

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.

Fig 1: Identifying Magnet Wheel On Crankshaft

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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

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Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Drill size maximum 2.5 millimeters.
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: Immediately carefully remove swarf on the radial shaft seal (1).

Fig 4: Identifying Swarf From Radial Shaft Seal

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Courtesy of BMW OF NORTH AMERICA, INC.

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

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

IMPORTANT: Immediately carefully remove residual swarf.

Fig 5: Driving Out Radial Shaft Seal With Impact Weight

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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

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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

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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

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Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 11 9 182 to crankshaft with special tool 11 9 184 from set of special tools 11 9 180 .

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

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Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Prepare special tool 11 9 181 from set of special tools 11 9 180 for installation.

Connect special tool 11 9 185 to special tool 11 9 181 from set of special tools 11 9 180 .

Fig 10: Connecting Special Tool 11 9 185 Onto Special Tool 11 9 181

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Courtesy of BMW OF NORTH AMERICA, INC.

Pull in radial shaft seal with special tool 11 9 181 and 11 9 185 in conjunction with special tool 11 9 183 from set of special tools 11 9 180 .

Fig 11: Pulling On Radial Shaft Seal With Special Tools 11 9 181 And 11 9 185

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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

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Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.