Seat Leon >> Removing and installing brake calliper piston

Special tools and workshop equipment required

  • Wedge - 3409-

Brakes - hydraulics

  • Thrust piece - T10145-

Brakes - hydraulics

Note

  • When carrying out repairs, install all parts supplied in repair kit.
  • Use only methylated spirits for cleaning the brake.
  • Apply thin coat of assembly paste G 052 150 A2 to brake cylinder, piston and sealing ring.

Removing:

Note Place a piece of wood in the cavity so that the piston does not get damaged.

  • Force piston out of brake calliper housing using compressed air.

  • Remove seal using wedge - 3409- .

Note When removing protect the cylinder from damage.

Installation:

  • The piston and join ring surfaces can only be cleaned using alcohol and immediately dried.
  • Before fitting the piston and seal ring, apply a thin coating of assembly paste.
  • Introduce the join ring into the brake caliper housing.
  • Place protective cap with outer sealing lip on piston.

  • Using the removal wedge - 3409- , insert the inner sealing lip into the groove of cylinder.

Brakes - hydraulics

Note During this operation, the piston has to be supported in front of the brake caliper housing.

  • Insert the brake caliper piston using the press tool - T10145- .

Note The outer sealing lip of the protective cap will then locate in the groove on the piston.

    Assembly overview - front brake caliper
    Exploded view - brake calliper FS III - Protective cap Fit onto bleeder valve. - Bleeder screw Before inserting, lightly grease the thread with assembly paste G 052 150 A2 ...

    See also:

    Central locking button
    The vehicle can be locked and unlocked from the inside using the central locking button. Fig. 59 Detail of rear left door central locking button Locking the vehicle – Press the button . ...