11 23 010

Removing fan coupling with fan wheel and fan cowl, refer to 11 52 020 / 17 11 031
Remove alternator drive belt, refer to 11 28 010
Remove drive belt for compressor.
refer to 11 28 050
Remove left and right underbody protection.

Removing and installing, replacing vibration damper on engine BMW M73

Unfasten screw and remove bracket.

Removing and installing, replacing vibration damper on engine BMW M73

Unfasten clips and press cooling air guide for alternator to one side.

Remove left and right brake air ducts.

Removing and installing, replacing vibration damper on engine BMW M73

Unfasten screws. Remove pulley from water pump.

Removing and installing, replacing vibration damper on engine BMW M73

Unscrew central bolt.

Removing and installing, replacing vibration damper on engine BMW M73

Special tool 11 2 420.

Note:

Protect engine bracket from damage.

Insert wood between engine support and special tool 11 2 420.

Unscrew central bolt.

Removing and installing, replacing vibration damper on engine BMW M73

Installation:

The vibration damper is secured with a parallel key.

Removing and installing, replacing vibration damper on engine BMW M73

Installation:

Replace central screw.

Tighten the central screw with torque. For tightening torque, refer to Technical Data 11 23 2AZ:

Type Thread Tightening specification Torque
1AZ Vee belt pulley on crankshaft
M10 Replace nut 190 Nm
2AZ Vibration damper / hub to crankshaft
M20 / M21 / M50 / M52 / M52TU / S50 US / S52 / M54 / M56 M18 x 1.5 Replace screws 410 Nm
M30 / S14 / S38 / B35 M24 x 1.5 Replace nut 440 Nm
M41 / M47 / M47TU / M51 / M60 / M62 M18 x 1.5 Replace screw
Jointing torque 100 Nm
Torque angle 60 °
Torque angle 60 °
Torque angle 30 °
N62 / N62TU / N73 M18 x 1.5 Replace screw

Grease head

Jointing torque 100 Nm
Torque angle 60 °
Torque angle 60 °
Torque angle 60 °
M70 / S70 / M73 M18 x 1.5 Replace screw
Jointing torque 100 Nm
Torque angle 60 °
Torque angle 60 °
M57 / M57TU / M67 / M67TU M10 Replace screws
Jointing torque 40 Nm
Torque angle 60 °
Torque angle 60 °

Place special tool 11 3 460 on special tool 11 2 420.

Note:

Special tool 11 3 460 is magnetic.

Select 0° location and mark on insertion nut. Tighten the central screw with torsion angle.

For tightening torque, refer to Technical Data 11 23 2AZ