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Volkswagen Workshop Service and Repair Manuals

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Removing and installing hydraulic unit, RHD > < Assembly overview - hydraulic unit, brake servo/brake master cylinder, RHD

Golf Mk3

Connecting brake lines from tandem brake master cylinder to hydraulic unit
Connecting brake lines from tandem brake master cylinder to hydraulic unit
   
Vehicles with ABS
A - Secondary piston circuit
B - Primary piston circuit
  V45-0134
Vehicles with ABS/EDL
A - Secondary piston circuit
B - Primary piston circuit
1 - Hydraulic unit to front right brake caliper
2 - Hydraulic unit to rear left brake caliper.
3 - Hydraulic unit to rear right brake caliper.
4 - Hydraulic unit to front left brake caliper
  V45-0139
Connecting supply pipe to hydraulic unit and reservoir
A - Secondary piston circuit
 - Colour code: green
 - Connect smaller diameter to upper fitting on expansion tank.
B - Primary piston circuit
 - Colour code: yellow
 - Connect larger diameter to lower fitting on expansion tank.
  Note
t  Supply pipe connections to hydraulic unit have differing diameters.
t  Colour coding of supply pipes -arrows- is same as colour coding of unions on hydraulic unit.
t  Supply pipes must be pushed upto limit stop on unions on hydraulic unit and must be pushed at least 17 mm onto unions on reservoir.
t  First connect supply pipe to hydraulic unit, clip into bracket and then connect to union on reservoir.
  V45-0137

Removing and installing hydraulic unit, RHD > < Assembly overview - hydraulic unit, brake servo/brake master cylinder, RHD