21 52 510 Removing And Installing/Replacing Clutch Slave Cylinder (Plastic)

Special tools required: 

• 13 3 010

Seal hydraulic line to clutch slave cylinder with special tool 13 3 010. See Fig 1.

Fig 1: Identifying Special Tool 13 3 010

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Release nuts and remove clutch slave cylinder (1) with holder (2).

Installation: 

Replace self-locking nuts.

Tightening torque 21 52 5AZ .

Fig 2: Identifying Clutch Slave Cylinder With Holder

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Unlock spring retainer (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Spring Retainer And Hydraulic Line

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Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Pressing Cylinder

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Remove special tool 13 3 010.

Hold cylinder piston vertically downwards.

Press piston 5 times into cylinder.

Fig 5: Pressing Cylinder Piston

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Installation: 

Check pressure hose for traces of abrasion.

If no traces of abrasion by the propeller shaft can be detected on the pressure hose:

The pressure hose must be bent approx. 30 mm away from the propeller shaft.

If traces of abrasion by the propeller shaft can be detected on the pressure hose:

The pressure hose must be replaced.

After replacement, the clutch hydraulics must be bled. See BLEEDING CLUTCH HYDRAULICS (PLASTIC SLAVE CYLINDER) .

Press in piston until it engages.

Install clutch slave cylinder.

Bleed clutch hydraulics. See BLEEDING CLUTCH HYDRAULICS (PLASTIC SLAVE CYLINDER) .

Fig 6: Locating Thrust Member And Contact Face

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Installation: 

Clean thrust member (1) and contact face on release lever.

Lightly grease thrust member (1) on contact face (2).