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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair -- M4 (F82 & F83) >> 11 14 Housing Cover >> Replacing rear radial crankshaft seal on transmission side (S55 engine)

Replacing rear radial crankshaft seal on transmission side (S55 engine)

Special tools required: 

Necessary preliminary tasks: 

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

Remove magnet wheel (1) from crankshaft.

G09844477Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on pulse sensor (2).

Slide PULSE SENSOR (2) upwards.

Tightening torque: 13 62 2AZ .

G09844478Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Drill size maximum 2, 5 mm.
Remove metallic debris/shavings immediately.

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

G09844479Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Immediately carefully remove metallic debris/shavings on the radial shaft seal (1).
G09844480Courtesy 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 metallic debris/shavings.
G09844481Courtesy of BMW OF NORTH AMERICA, INC.

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

G06904210Courtesy of BMW OF NORTH AMERICA, INC.

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

G06904211Courtesy 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.

G06904212Courtesy of BMW OF NORTH AMERICA, INC.

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

G09844485Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Prepare special tool 11 9 181 for installation.

Connect special tool 11 9 185 onto special tool 11 9 181.

G06904214Courtesy of BMW OF NORTH AMERICA, INC.

Pull on radial shaft seal with special tool 11 9 181 and 11 9 185 in combination with special tool 11 9 183.

G06904215Courtesy of BMW OF NORTH AMERICA, INC.

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

G06904216Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.