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

Special tools required:

Necessary preliminary work:

Remove FLYWHEEL

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

Remove magnet wheel (1) from crankshaft.

Fig 1: Identifying Magnet Wheel

G09844477

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw on pulse sensor (1).

Slide PULSE SENSOR (2) upwards.

Fig 2: Identifying Pulse Sensor

G09844478

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Drill size maximum 2.5 millimeters.
Remove metal shavings immediately.

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

Fig 3: Drilling Hole In Radial Shaft Seal

G09844479

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Immediately carefully remove metal shavings on the radial shaft seal (1).

Fig 4: Locating Metal Shavings On Radial Shaft Seal

G09844480

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in special tool 23 0 490 in direction of arrow.

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

IMPORTANT: Immediately carefully remove residual metal shavings.

Fig 5: Removing Radial Shaft Seal

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 And 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 On Crankshaft Using Special Tool (11 8 220)

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

G06904212

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: Identifying Special Tool (11 9 182 And 11 9 184)

G09844485

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) To Special Tool (11 8 181)

G06904214

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 Radial Shaft Seal Using Special Tool (11 9 181)

G06904215

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 12: Tightening Radial Shaft Seal

G06904216

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.