Vacuum Pump: Service and Repair

11 66 000 Removing and installing/replacing vacuum pump (N74)





Important!
Installation:
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.





Necessary preliminary tasks:
^ Press brake pedal several times in order to reduce vacuum pressure in brake booster.
^ Remove fan cowl with electric fan.





Unlock and detach vacuum line (1).

Unfasten screws (2).

Tightening torque: 11 66 1AZ.

Pull off vacuum hose (3).





Release screws (1).

Tightening torque: 11 66 1AZ.

Remove vacuum pump (3).





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

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





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

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

Note:
Illustrations show N73.





Check function of DME.

Check vacuum pump for leaks and correct operation.