Bleeding the slave cylinder
 
  
 
 
  
   
    
     |  | Bleeding the slave cylinder | 
   
  
  
   
   
   
   
    Removed gearbox is assumed. If gearbox is in-car, see
    
     Bleeding the clutch hydraulic system in the car
    
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       | 1. | Connect a 450 mm long piece of clean, transparent 8 mm plastic hose to the slave cylinder delivery pipe connection. 
 
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       | 2. | Fully depress the release bearing once and then release it. The slave cylinder seal remains in its inner position. 
 
   
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       | 3. | Fill the plastic hose with brake fluid to a level of about 350 mm. 
 
   
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       | 5. | Pump up pressure until the slave cylinder seal moves out and brake fluid runs down into the slave cylinder. The pressure increases when the seal has reached its farthest point. 
 
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       | 6. | Remove the pressure/vacuum pump and carefully press in the release bearing to its stop. Note the air bubbles in the plastic hose. 
 
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       | 7. | Repeat points 5 to 6 a few times until no air bubbles are visible in the hose. 
 
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       | 8. | Leave the slave cylinder seal in its innermost position. Drain and remove the plastic hose. 
 
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