BMW 7 Series: Vacuum Pump

REMOVING AND INSTALLING/REPLACING VACUUM PUMP (N63)

IMPORTANT: Installation note: Due to the risk of damage to the engine gaskets/seals and the lack of brake boosting, make sure before starting the engine that all the vacuum lines are connected.

Vacuum pump is fitted on cylinder head 1 to 4 at rear on intake camshaft.

Necessary preliminary work

• Press brake pedal several times in order to reduce vacuum pressure in brake booster.
• Remove right CATALYTIC CONVERTER.
• Remove right heat shield.
• Detach vacuum line from vacuum pump.

Release screws (1).

Remove heat shield (2).

Remove vacuum hose.

Fig. 521: Identifying Heat Shield With Mounting Screws

Release screws (1).

NOTE: Bolts (1) are secured against falling out.

Release screw (2).

Remove vacuum pump (3).

Fig. 522: Identifying Vacuum Pump With Mounting Bolts And Screws

Drive (1) must be rotated into correct position prior to installation.

Installation note: Replace sealing ring (2) and coat with grease to facilitate fitting.

Fig. 523: Identifying Sealing Ring And Drive

Installation note: Align vacuum pump drive to groove (1) of intake camshaft.

Vacuum pump can best be installed when groove (1) is vertically aligned.

Fig. 524: Identifying Intake Camshaft Groove

Check function of DME.

Check vacuum pump for leaks and correct operation.

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