11 41 000 Removing and installing or replacing the oil pump (B48, B46)

Attention  !

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

Necessary preliminary tasks: 

• Remove OIL SUMP 

REMOVAL: 

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

Fig 1: Oil/Vacuum Pump And Screws

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

Fig 2: Oil/Vacuum Pump And Drive Chain

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Replacement: 

Release screws (1). Remount intake pipe (2).

Tighten down screws (1).

Tightening torque: 11 41 1AZ .

Fig 3: Intake Pipe And Screws

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Replacement: 

Attention  !

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

Labelling "Front" on the camshaft sprocket (1) needs to be visible.

Fig 4: Camshaft Sprocket

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Replacement: 

Attention  !

Screw (1) has left-hand thread.

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

Hold down camshaft sprocket (2) with a suitable tool. Release screw (1). Remount camshaft sprocket.

Fig 5: Camshaft Sprocket And Screw

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Parts: Replace screw (1).

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

Tightening torque: 11 41 5AZ .

INSTALLATION: 

Attention  !

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

Fig 6: Sealing Ring

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Check centering bushes for damage, replace if necessary.

Fig 7: Centering Bushes

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

Fig 8: Oil/Vacuum Pump And Drive Chain

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

Tightening torque: 11 41 2AZ .

Fig 9: Oil/Vacuum Pump And Screws

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