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Gearbox mechanics,operation, construction,diff. > < Clutch action: Repairs

Leon Mk1

Clutch system: bleed out air
Clutch system: bleed out air
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Brake filling and bleeding devicee -SAT 1175B -, see equivalent → Anchor
  L00-10020
t  Pliers -T20174- or pliers -T20029 -, see equivalentt → Anchor
  Note
t  Use only original brake fluid according to standard US FMVSS 116 DOT 4 → Replacement part catalogue.
t  Do not under any circumstances allow brake fluid to come into contact with fluids that contain mineral oils (e.g. oil, petrol, cleaning agents). Mineral oils damage the seals and sleeves in the brake system.
t  Brake fluid is toxic. Also, being caustic, it must not come into contact with paintwork.
t  Clean any brake fluid that might have spilled with an ample amount of water.
t  Brake liquid is hygroscopic , this means that it absorbs humidity from the air, for this reason it should always be kept in sealed hermetic containers.
t  Please observe requirements for disposal.
  WARNING
When bleeding the system with brake bleederr -SAT 1175B- ensure that the a filling pressure of 2 bars is not exceeded.
If a filling pressure of 2 bars is exceeded, the hydraulic unit may not be bled correctly
–  Remove air cleaner housing → Rep. gr.23.
  W00-2456
–  Connect lines -7- of brake bleederr -SAT 1175B- to vehicle battery (12V); observe polarity (red + black -).
–  Unscrew the plug of the brake fluid tank.
–  Connect universal cover -SAT 1175/3- to brake fluid tank and fasten.
  Note
t  Verify, that the probe of universal cover -SAT 1175/3- is below the brake fluid level.
t  This ensures that the brake fluid is returned to the proper level after completing the operation. If necessary, add brake fluid after completing the operation.
–  Remove hose from bracket at rear of brake bleederr - SAT 1175B- and connect hose -6- to universal cover -SAT 1175/3-.
–  Move selection switch -3- to pressure position „1“ and switch -2- to „ON“. The pump runs for approx. 15 seconds until the determined pressure is reached. If the pump runs for a longer period of time, check for leakage.
–  Select a pressure of „2 bars“ with controller -1-.
  Note
The pressure can only be controlled if the unit is operation.
–  Remove protective cap from slave cylinder → Item.
–  Install bleeder hose -4- on collection bottlee -SAT 1175B/1-.
–  Connect bleeder hose -4- to bleed valve -5-.
–  Open bleed valve -5- and bleed system:
–  Allow approx. 100 cm3 of brake fluid to run out.
–  Close bleeder valve.
–  Apply pedal 10 to 15 times and release quickly.
–  Open bleed valve -5-.
–  Allow additional 50 cm3 of brake fluid to run out until the brake fluid exiting is bubble-free.
–  Close bleeder valve.
–  After finishing air bleeding, the clutch pedal must be activated several times.
–  After completion of bleeding, move switch -2- to „OFF“ and turn selection switch to „0“.
  Note
To relieve pressure the machine must be „switched off“, the switch turned to „OFF“ and the pressure relieved by turning selection switch to „0“.
–  Wait approx. 30 seconds so that the remaining brake fluid can run back restoring the correct fluid level in the reservoir.
–  Remove the hose -6- anduniversal cover -SAT 1175/3-. Check whether fluid level is okay and install original cap. Use rag to prevent damaging paint.
  Note
Ensure that the brake fluid does not get on the bodywork or any other element.

   

Gearbox mechanics,operation, construction,diff. > < Clutch action: Repairs