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  .

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  , see 21 52 CLUTCH OPERATION (HYDRAULIC) .

Fig 2: Identifying Clutch Slave Cylinder With Holder

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Unlock spring retainer (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Hydraulic Line And Spring Retainer

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Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Pressing Cylinder Together By Hand

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Remove special tool 13 3 010  .

Hold cylinder piston vertically downwards.

Press piston 5 times into cylinder.

Fig 5: Holding Cylinder Piston Vertically Downwards

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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. 

Press in piston until it engages.

Install clutch slave cylinder.

Bleed clutch hydraulics.  See bleeding clutch hydraulic system .

Installation: 

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

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

Grease, refer to CLUTCH - OPERATING FLUIDS .

Fig 6: Pressing Grease Thrust Member On Contact Face

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