Removing and installing or replacing vacuum pump (B48 and B46 engine) (Cooper S and John Cooper Works)

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IMPORTANT: It is possible to remove and install the oil/vacuum pump without removing the transmission.

Preliminary work needed:

Remove OIL SUMP .

REMOVAL:

Release screws (1) of oil/vacuum pump (2).

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Remove oil/vacuum pump (1) and feed out of drive chain (2).

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Replacement:

Unscrew the screws (1). Remount intake pipe (2).

Tighten down screws (1).

Tightening torque: 11 41 1AZ .

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Replacement:

IMPORTANT: Pay attention to mounting flats on oil pump (see arrow).

Labeling "Front" on the camshaft wheel (1) needs to be visible.

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Replacement:

IMPORTANT: Screw (1) has left-hand thread.

"Front" needs to be legible on the camshaft wheel.

Hold down camshaft wheel (2) with a suitable tool.

Remove screw (1). Remount camshaft wheel.

Parts: Replace screw (1).

Mount camshaft wheel (2) and hold down with a suitable tool. Tighten screw (1).

Tightening torque: 11 41 5AZ .

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INSTALLATION:

IMPORTANT: Sealing ring (1) must not be damaged or missing.

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Check centering connectors for damage, replace if necessary.

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Feed oil/vacuum pump (1) into drive chain (2).

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Tighten down screws (1) of oil/vacuum pump (2).

Tightening torque: 11 41 2AZ .

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Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install OIL SUMP .