Vacuum Pump: Service and Repair

11 66 000 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.







Release screws (1).

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

Release screw (2).
Remove vacuum pump (3).







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

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







Installation note:
Align vacuum pump drive to groove (1) of intake camshaft.
Vacuum pump can best be installed when groove (1) is vertically aligned.







Check function of DME.
Check vacuum pump for leaks and correct operation.