21 21 500 Removing and Installing/Replacing Clutch (SAC 240)

21 21 500 - Removing and installing/replacing clutch (SAC 240)

Special tools required:

Necessary preliminary tasks:
Remove transmission 23 00 018 Removing and Installing Transmission (GS6-53BZ).

N54

Block flywheel with special tools 11 9 260 and 11 9 265.

Release screws and remove clutch from flywheel.

Installation:
Clean flywheel and check for wear and damage.

Replace damaged flywheel.

Important!
Always replace clutch plates fouled e.g. by oil, cleaning agent.

Observe the following procedure when installing the removed clutch and clutch plate.

Insert special tool 21 2 180 in clutch.

Press special tool 21 2 180 together at handles (1) as far as it will go and tighten down knurled screws (2).

Adjustment ring of clutch is now secured in its original position (wear position).

Note:
Locking hooks (1) of special tool 21 2 180 must engage in openings of pressure spring.

Fit special tool 21 2 170 and tighten down at knurled screw (1).

Screw in spindle (2) until diaphragm spring (3) is tensioned on stop.

Note:
Insert special tool 21 2 170 only in area of bores for dowel pins.

Centre clutch plate (1) with special tool 21 2 270 21 2 270 Clutch Centering Sleeve.

Important!
Install clutch plate in correct position.

Note designation for "engine side" / "transmission side".

Handle clutch plate with care. Do not touch surfaces of friction linings.

Fit clutch (1) to flywheel.

Tightening torque 21 21 1AZ [1][2]Pressure Plate.

Note:
Clutch (1) must be secured by way of dowel pins (2).

Release spindle (1) until load is fully removed from diaphragm spring (2) Remove special tools 21 2 170 and 21 2 180.

Withdraw special tool from clutch plate with aid of accompanying screw (1).

Installing removed clutch with new clutch plate:

Important!
Before installing a used clutch with a new clutch plate, always reset adjustment ring in new position.

Set clutch down on a clean surface.

Insert special tool 21 2 180 in clutch (1).

Note:
Locking hooks (1) of special tool 21 2 180 must engage in openings in clutch.

Fit special tool 21 2 170 and tighten down at knurled screw (1).

Note:
Insert special tool 21 2 170 only in area of bores for dowel pins.

Screw in spindle (1) until adjustment ring of clutch (2) can be turned with special tool 21 2 180 at handles (3).

Press special tool 21 2 180 together at handles (3) as far as it will go and grip firmly.

At same time tighten down knurled screws (2).

Adjustment ring of clutch is now secured in new position.

Screw in spindle (1) until diaphragm spring is tensioned on stop.

Fit clutch (1) to flywheel.

Tightening torque 21 21 1AZ [1][2]Pressure Plate.

Important!
Clutch (1) must be secured by way of dowel pins (2).

Release spindle (1) until load is fully removed from diaphragm spring (2)

Remove special tools 21 2 170 and 21 2 180.

Withdraw special tool from clutch plate with aid of accompanying screw (1).

Installing new clutch

Important!
Locking piece may only be removed clutch is screwed down!

Fit clutch to flywheel.

Tightening torque 21 21 1AZ [1][2]Pressure Plate.

Important!
Clutch must be secured by way of dowel pins (1).

Carefully unscrew locking piece (1) clockwise or counterclockwise with a WAF 14 hexagon socket wrench (2).

Note:
A slight snapping of the plate spring while unscrewing the lock is possible.

Withdraw special tool from clutch plate with aid of accompanying screw (1).