Caution: Remember that dust generated during wear of the clutch slave disk friction linings may contain asbestos, which is harmful to health. Do not blow off dust with compressed air and try not to inhale it. Do not use petroleum-based solvents to wipe clutch components - use only special brake cleaners or pure methyl alcohol. Place used rags in a hermetically sealed container.
1. The slave cylinder assembly with the release bearing is attached to the inside of the clutch dome and to remove it, it is necessary to dismantle the gearbox (see Part B). Wipe the outside of the cylinder thoroughly.
2. On manual transmission F13/F17 (all modifications) to prevent the release bearing from failing during removal, install a special holder (red color) (see accompanying illustration). Install the special device KM-6157 into the bearing hole, remove the hydraulic line connecting nipple retainer and unscrew the 3 mounting bolts.
3.2. Removing the release bearing (Manual transmission F13/F17) - the arrows indicate the mounting bolts: 1. Device KM-6157; 2. Connecting nipple retainer; 3. Special holder (red color); 4. Sealing ring of the nipple; 5. Sealing ring
3. Remove the slave cylinder assembly together with the special tool while simultaneously pulling out the connecting nipple of the hydraulic supply line (see illustration 3.2) from the assembly.
4. On the F23 manual transmission, install the special device KM-6059, then loosen the nut of the union connector and disconnect the hydraulic line from the cylinder (see accompanying illustration). Remove the 3 mounting bolts and remove the cylinder assembly.
3.4. Removing the clutch slave cylinder using the KM-6059 (2) tool (F23 manual transmission) - the arrows indicate the mounting bolts: 1. Nut of the hydraulic line union
5. On models with the Easytronic system, the fastening of the actuator cylinder assembly is almost completely identical to the fastening on the F23 manual transmission. The KM-6157 device is used to remove/install the assembly (see accompanying illustration).
3.5. Installing the assembly (1) of the slave cylinder on models with the Easytronic system - the arrow indicates the release bearing seal: 2. Input (primary) shaft of the gearbox; 3. Device KM-6157
6. After disconnecting the hydraulic line, remove any traces of spilled brake fluid.
7. Remove the sealing ring installed between the cylinder and the manual transmission housing - the ring must be replaced without fail. Take precautions against dirt getting into the box.
8. Check the condition of the release bearing seals (indicated by an arrow on the callout) and the sealing ring of the connecting nipple (see illustration 3.2).
9. A failed slave cylinder cannot be repaired. If brake fluid leaks develop, replace the cylinder assembly.
10. Before installation, make sure that the mating surfaces of the cylinder and the manual transmission housing are absolutely clean and dry. Place a new sealing ring in the receiving groove on the transmission housing. Lubricate the inner cylinder sealing ring with clean transmission oil and carefully install the cylinder on the manual transmission input shaft using a special device (KM-6157 or KM-6059 - depending on the model).
11. Further installation is carried out in the reverse order of removal. Do not forget to bleed the hydraulic circuit (see Section 4).
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