Clutch F

Clutch F





1 - Cylinder "F"

• Check for scoring from lining discs on inner circumference => [ Check cylinder inner circumference
for scoring from lining discs ]

• Check for scoring from lining discs on outer circumference => [ Check cylinder outer circumference
for scoring from lining discs ]

• Checking splines

• Checking needle bearing and metal sleeve for wear => [ Checking needle bearing and metal sleeve in
cylinder for wear ]

3 - Piston "F"

• Checking for wear

6 - Plate spring

• Replace in case of signs of wear or if dished washer tips are bent

• Replace broken plate spring

7 - Split retaining ring

• Replace if deformed

10 - Outer plates

• Checking for wear => [ Checking coated and outer plate for wear ]

11 - Coated plate

• Checking for wear => [ Checking coated and outer plate for wear ]

Check cylinder "F" inner circumference for scoring from lining discs





- Check cylinder "F" at inner circumference for signs of wear caused by coated plates.

• Coated plates must not get caught in scoring - arrows -.

If scoring - arrows - caused by coated plates are greater than 0.5 mm:

- Replace cylinder "F" and clutch freewheel inner race " D/G"

Check cylinder "F" outer circumference for scoring from lining discs





- Check cylinder "F" at outer circumference for signs of wear caused by coated plates.

• Coated plates must not get caught in scoring - arrows -.

If scoring - arrows - caused by coated plates are greater than 0.5 mm:

- Replace cylinder "F".

• This damage is always caused by a malfunctioning valve body.

Checking needle bearing and metal sleeve in cylinder "F" for wear





- Perform a visual check of needle bearing - arrow 1 -.

• Needle bearing must be like new.

- Replace cylinder "F" if necessary.

- Check contact surface of metal sleeve for wear - arrow 2 - in cylinder "F".

• Contact surface must not be heavily scored and/or show blue discoloration.

In case of deep grooves and/or blue color:

- Replace cylinder "F".

If no blue discoloration and only small grooves are detected, proceed as follows:

- Sandpaper (600 grit, oiled) contact surface 1 to 2 times.

- Carefully wipe off with a clean rag and check contact surface. Contact surface must now be like new.

If scores cannot be removed in this manner:

- Replace cylinder "F".

Checking coated and outer plate for wear





Signs of overheating on outer plates point to worn coated plates. Evaluate signs of wear as follows:

A Spots of discoloration of outer plate caused by overheating in distance of more than 20 mm: Outer and coated plate OK, can be reused.
B Spots of discoloration of outer plate caused by overheating in distance of less than 20 mm: Outer and coated plates worn, must be replaced.
C Tarnish blue/brown at outer and/or inner area of outer plate: Outer and coated plates overheated and worn, must be replaced.