LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2017 >> X3 sDrive28i >> Repair and Diagnosis >> External Pages >> Different car >> Section 372 (Engine - Repair) >> Housing Cover >> 11 14 151 Replacing the rear crankshaft seal (M57T2-SCR)

11 14 151 Replacing the rear crankshaft seal (M57T2-SCR)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work: 

Unfasten oil sump screws on gearbox side.

Loosen oil sump.

Fig 1: Locating Oil Sump Screws
G09951863Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (2) and remove crankshaft sensor (3) in direction of arrow.

Remove multi-pole sensor gear.

Release bolts (1) and remove end cover.

IMPORTANT: Check oil sump gasket for damage after removing end cover. If necessary, remove OIL SUMP  and replace oil sump gasket.
NOTE: Illustration does not show oil sump.
Fig 2: Identifying Crankshaft Sensor Bolt
G09951864Courtesy of BMW OF NORTH AMERICA, INC.

Lubricate contact face of crankshaft.

IMPORTANT: When installing the end cover with crankshaft seal on the crankshaft, only the "support bushing (1)" may be used as a mounting tool.
Push on end cover with support bushing (1) straight and without tilting sideways.

Insert all screws and tighten down end cover.

Fig 3: Identifying Support Bushing
G09951865Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Illustrations show M47TU.
NOTE: Store the support bushing (1) of the new crankshaft seal version as a "special tool".

The old and new crankshaft seal versions can be installed with the support bushing (1).

Fig 4: Identifying Crankshaft Support Bushing
G09951866Courtesy of BMW OF NORTH AMERICA, INC.

Make sure fitting bushes (1) are correctly seated.

Fit sensor gear.

Fig 5: Identifying Crankshaft Fitting Bushing
G09951867Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The end cover is supplied in the set with a built-in radial shaft seal and a support bushing. The support bushing is fitted on the crankshaft seal (to provide protection during transportation and storage).

Assemble engine.

Check engine for leak tightness.