11 66 000 Removing and Installing/Replacing Vacuum Pump (N54)

Special tools required: 

• 11 0 290
• 11 4 120
• 11 8 650

Necessary preliminary tasks: 

• Remove drive belt. (See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N54) )
• Remove tensioner for drive belt. (See 11 28 020 REPLACE ALTERNATOR DRIVE BELT TENSIONER (N54) )
• Remove sealing cover for vacuum pump. (See 11 14 010 REPLACING VACUUM PUMP SEALING COVER (N54) )
• Remove intake air manifold. (See 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N54) )
• Remove H.P. 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. (See 11 8 650 HOLDER )

Secure special tool 11 0 290 in sprocket wheel and to special tool 11 8 650. (See 11 0 290 HOLDER and 11 8 650 HOLDER )

Release screw (1).

Tightening torque, see 11 66 2AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Press chain tensioner (1) with chain in direction of arrow.

Insert special tool 11 4 120. (See 11 4 120 LOCKING PIN )

Remove sprocket wheel (2) in direction of arrow.

Release screws (1).

Tightening torque, see 11 66 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Release screws (1), secure against falling out.

Remove vacuum pump.

Installation: 

Replace seal.

Assemble engine.