11 27 110 Removing and refitting/replacing balancer shafts (N20)

Special tools required: 

• 2 219 548
• 2 212 825
• 2 318 117
• 11 4 120
• 11 4 420
• 11 8 580

Necessary preliminary tasks: 

• Removing oil sump  . See 11 13 000 REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP (N20) .

Installation note: 

Wet special tool 2 219 548 with oil to simplify dismantling and installation.

Secure crankshaft with special tool 2 219 548 via the dowel hole.

Loosen sealing cap using a screwdriver.

Installation note: 

Position counterbalance shaft with special tool 2 212 825 .

Secure special tool 2 212 825 on oil pump housing with screw (1).

If special tool 2 212 825 cannot be positioned, the TIMING  must be readjusted.

Press back chain tensioner and fix with special tool 11 4 420 .

Installation note: 

There are various central bolts of the oil pump/camshaft sprocket.

1. Loosen torx socket with T50 using special tool 11 4 420 .
2. Torx socket with T60 can be released using special tool 11 8 580 .
   Fig 4: Attaching Special Tool (2 318 117) To Crankcase

   Courtesy of BMW OF NORTH AMERICA, INC.

Release oil pump central bolt (2).

Tightening torque: 11 41 5AZ .

Unfasten screws (2).

Release screws (1).

Tightening torque: 11 41 3AZ .

Remove gear and chain module (2).

Release screws (1).

Tightening torque: 11 41 6AZ/2AZ .

Release screws, remove oil pump with counterbalance shaft.

Tightening torque: 11 41 2AZ .

Installation note: 

Check spacer bushes for secure seating and damage; replace if necessary.

Assemble engine.