Removing and Installing/Replacing Vibration Damper Hub (N73)

11 23 031 - Removing and installing/replacing vibration damper hub (N73)





Special tools required:
- 11 3 454
- 11 3 460 11 3 460 Protractor
- 11 9 451 11 9 450 Counter Holder w/ Socket and Pointer
- 11 9 452 11 9 450 Counter Holder w/ Socket and Pointer
- 11 9 453 11 9 450 Counter Holder w/ Socket and Pointer
- 11 9 455 11 9 450 Counter Holder w/ Socket and Pointer





Necessary preliminary tasks:
- Remove fan clutch Service and Repair.
- Remove alternator drive belt Replacing Alternator Drive Belt.
- Remove A/C compressor drive belt Replacing A/C Compressor Drive Belt.
- Remove engine splash guard.
- Remove vibration damper Removing and Installing/Replacing Vibration Damper (N73).
- Remove tensioner from A/C compressor drive belt.





Secure special tool 11 9 451 11 9 450 Counter Holder w/ Socket and Pointer in conjunction with special tool 11 9 452 11 9 450 Counter Holder w/ Socket and Pointer (also a spacer 11 9 455 11 9 450 Counter Holder w/ Socket and Pointer for N73 only) to vibration damper hub and to oil sump (A/C compressor tensioner).

Installation:
Check vibration damper hub and radial seal, replace if necessary.
Align groove in vibration damper hub to parallel key and install vibration damper hub.
Replace central screw (1).





Fit special tool 11 3 460 11 3 460 Protractor on special tool 11 9 451 11 9 450 Counter Holder w/ Socket and Pointer.
Special tool 11 3 460 11 3 460 Protractor is magnetic.





Secure special tool 11 9 453 11 9 450 Counter Holder w/ Socket and Pointer with clamping screw on special tool 11 3 454 (socket).
Adjust 0° position.
Tightening torque 11 23 2AZ 11 23 Vibration Damper.





Assemble engine.