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Removing and installing brake servo > < Procedure

Golf Mk4

Removing and installing brake master cylinder
Removing and installing brake master cylinder
Special tools and workshop equipment required
   
t  Hose clamps up to 25 mm -3094-
Removing
–  Note or request radio code on vehicles with coded radio if necessary.
–  Disconnect battery
–  Lay out sufficient lint free clothes in area of plenum chamber, engine and gearbox.
–  Draw off as much brake fluid as possible from brake fluid reservoir using brake filling and bleeding unit -VAS 5234- or extraction unit -V.A.G 1869/4-.
–  Clamp clutch master cylinder supply hose with special tool 3094.
–  Pull off clutch master cylinder supply hose.
–  Pull connector off float warning indicator sender.
Special point regarding vehicles with ABS/EDL/TCS/ESP
  W00-0079
–  Pull connector -arrows- off brake pressure senders -a- and -b-.
Continuation for all vehicles
–  Unscrew brake lines on brake master cylinder and seal brake lines with plugs from repair kit Part No. 1H0 698 311 A.
–  Unscrew brake master cylinder nuts.
–  Remove heat shield, if part of original equipment.
–  Carefully take brake master cylinder out of brake servo unit.
Installing
–  Install in reverse order.
Observe the following points when installing:
–  When fitting together the brake master cylinder and brake servo unit, ensure that the push rod is correctly located in the brake master cylinder.
–  Bleed brake system → Chapter.
–  Initiate basic (default) settings to bleed brake system.
Connecting -VAS 5051- and selecting functions → Chapter.
–  Basic settings of brake pressure sender 1 -G201- and brake pressure sender 2 -G214- must be performed in addition on vehicles with ABS/EDL/TCS/ESP (only Mark 20 IE).
  N47-0107

Removing and installing brake servo > < Procedure