11 66 000 Removing and installing/replacing vacuum pump (N20, N26)
Necessary preliminary tasks:
- Press brake pedal several times in order to reduce vacuum pressure in brake booster.
- Remove acoustic cover . See 11 12 090 REMOVING AND INSTALLING/RENEWING ACOUSTIC COVER (N20) or 11 12 090 REMOVING AND INSTALLING/RENEWING ACOUSTIC COVER (N26)
- Remove SOUND INSULATION .
Release vacuum line (1) from both plug connections and remove.
NOTE:
For purposes of clarity, this work step is shown on the engine after it has been removed.
Release positive battery cable (1) from vacuum pump
Release screw and pull off vacuum line (2) of exhaust turbocharger control unit.
Release screws (3) and remove vacuum pump towards rear.
Installation note:
Check sealing ring (1) for damage and replace if necessary.
Lightly oil sealing ring (1)
Align vacuum pump electric motor (3) to groove (2) on exhaust camshaft.
The vacuum pump can be installed more easily by simultaneously rotating and pressing.
Assemble engine.
Check function of DME.