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Volkswagen Golf Mk7 Service & Repair Manual: Bleeding hydraulic system following standard procedure

Using brake filling/bleeding equipment -VAS 5234-, this page covers standard bleeding of the Volkswagen Golf Mk7 hydraulic system — a pre-pressure of 2 bar is required for the ABS hydraulic unit -N55-.

  Note
Bleeding the hydraulic system using brake filling and bleeding equipment -VAS 5234- is described.
A pre-pressure of 2 bar is required for bleeding the ABS hydraulic unit -N55-.
Special tools and workshop equipment required
   
Brake filling and bleeding equipment -VAS 5234-
 
 

Bleeding hydraulic system following standard procedure

Tool set for brake bleeding -VAS 6564-
Carry out the following work:
–  On vehicles with 15-inch rims, remove rear wheels.
  Note
Adhere strictly to work sequence when bleeding brake system.
–  Connect brake filling and bleeding equipment -VAS 5234-.
–  Open bleeder valves in specified order and bleed brake calipers.
1 - Front left brake caliper
2 - Front right brake caliper
3 - Rear left brake caliper
4 - Rear right brake caliper
  Note
Use suitable bleeder hose. It must sit tightly on bleed valve so that no air can enter brake system.
–  Leave bleeder valve of each brake caliper open with bleeder hose fitted until brake fluid discharges free of air bubbles.
 

Bleeding hydraulic system following standard procedure

    Questions & answers

    Bleeding hydraulic system following standard procedure — Volkswagen Golf Mk7

    How do I bleed the Golf Mk7 brake system (standard procedure)?
    Use a pressure bleeder at 1–2 bar. Open each bleed nipple in the specified sequence (usually furthest from master cylinder first), collect fluid until free of bubbles, then close.
    General notes on brake fluid
      Note Only use new brake fluid conforming to VW standard (VW 501 14). Brake fluid is poisonous. Also due to its corrosi ...

    Subsequent bleeding of hydraulic system
      Note Carry out subsequent bleeding when: brake pedal travel is too long or so-called »soft brake pedal« ...