Clutch B

Clutch B

CAUTION!
Illustration depicts current construction version of clutch " B" with waved washer, 2x outer plates and 2x coated plates. Always replace clutch "B" without waved washer, 3x coated plates and 3x outer plates on older construction versions.





2 - Cylinder "B"

• Checking contact surface for rectangular rings for wear => [ Checking contact surface for rectangular rings in cylinder for wear ]

4 - Piston "B"

• Checking freedom of movement of valve ball => [ Checking freedom of movement of valve ball
in piston ]

6 - Plate spring

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

7 - Split retaining ring

• Replace if deformed

8 - Waved washer

9 - Outer plates

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

10 - Coated plates

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

Checking contact surface for rectangular rings in cylinder "B" for wear





- Check contact surface - arrow - in cylinder " B" for wear.

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

In case of deep grooves and/or blue color:

- Replace cylinder "B".

- Check rectangular rings.

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 "B".

Checking freedom of movement of valve ball in piston "B"





- Lightly coat bore for valve ball - arrow - at front side with oil.

CAUTION!
Wear eye protection.

- Charge valve ball from rear with compressed air.

• Only little ball stroke (hardly visible).

• Ball is not spring-loaded (moves back slowly).

If valve ball is stuck:

- Loosen ball with a nail or tip of a ball point pen.

If valve ball is still stuck or leaks:

- Replace piston "B".

• A valve ball that does not seal properly or is stuck will cause slipping in reverse gear.

Checking coated and outer plates 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 plates 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 plates: Outer and coated plates overheated and worn, must be replaced.