11 66 000 Removing and installing or replacing vacuum pump (B36A/B38A)

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NOTE: 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: Locating Screws Of Oil/Vacuum Pump

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Remove oil/vacuum pump (1).

Fig 2: Oil/Vacuum Pump

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Feed oil/vacuum pump (1) out of drive chain (2) and remove.

Fig 3: 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 4: Locating Intake Pipe And Screws

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Replacement:

IMPORTANT:

Pay attention to mounting flats (1) on oil pump (see arrow).

The label "Front" must be visible.

NOTE: Illustration shows N47.

Fig 5: Mounting Flats On Oil Pump

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Replacement:

IMPORTANT:

Screw (1) has left-hand thread.

"Front" (3) must be readable.

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

Fig 6: Camshaft Sprocket, Front Marking, 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 4AZ .

INSTALLATION:

IMPORTANT:

Sealing ring (3) must not be damaged or missing.

Check centering bushes for damage, replace if necessary.

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

Fig 7: Oil/Vacuum Pump And Drive Chain

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Install oil/vacuum pump (1).

Fig 8: Oil/Vacuum Pump

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

Tightening torque: 11 41 2AZ .

Fig 9: Locating Screws Of Oil/Vacuum Pump

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