11 23 010 Removing and installing/replacing vibration damper (N74)

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Necessary preliminary tasks:

Remove FAN COWL
Remove alternator DRIVE BELT
Remove A/C compressor DRIVE BELT
Remove belt pulley for A/C system

Release screw (1).

Tightening torque: see 1AZ in 11 28 V-RIBBED BELT WITH TENSION AND DEFLECTION ELEMENT

Remove belt tensioner with idler pulley (2).

Fig 1: Identifying Idler Pulley With Screw

G08469215

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Observe fixture on belt tensioner (1) (risk of damage!) .

Fig 2: Identifying Belt Tensioner

G08469216

Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 11 8 090 with three screws (1) to vibration damper.

Secure special tool 11 8 090 with belt tensioner bolt (2) to timing case cover.

Tightening torque: see 3AZ in 11 28 V-RIBBED BELT WITH TENSION AND DEFLECTION ELEMENT

NOTE: A 3/4 inch tool is needed to release the central bolt.

Fig 3: Securing Special Tool 11 8 090 With Belt Tensioner Bolt And Screws

G08469217

Courtesy of BMW OF NORTH AMERICA, INC.

Release central bolt on vibration damper.

Secure central bolt with special tool 00 9 140 or 11 3 460 .

Position special tool 11 3 460 on special tool 11 8 090 .

Adjust special tool 11 9 453 on special tool 11 9 454 using clamping screw to 0° on scale.

Tightening torque: see 1AZ in 11 23 VIBRATION DAMPER

Fig 4: Adjusting Special Tool 11 9 453 On Special Tool 11 9 454 Using Clamping Screw

G08469218

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.