Vacuum Pump: Service and Repair

11 66 000 Removing and installing/replacing vacuum pump (N55)

Special tools required:







Necessary preliminary tasks:
- Remove drive belt.
- Remove belt tensioner for drive belt.
- Remove sealing cap for vacuum pump.
- Remove high pressure pump.







Rotate crankshaft at central bolt.
Turn sprocket wheel until drilled holes and screws of vacuum pump match up.
Screw in special tool 11 8 650 .
Secure special tool 11 0 290 in sprocket and to special tool 11 8 650 .
Release screw (1).
Tightening torque 11 66 2AZ.







Press chain tensioner (1) with chain in direction of arrow.
Install special tool 11 4 120 .
Remove sprocket (2) in direction of arrow.







Release screws (1).
Tightening torque 11 66 1AZ.
Release screws (1).
Secure screws (1) against falling out.
Remove vacuum pump.

Installation note:
Replace gasket.







Assemble engine.