VW Golf manuals

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

  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 wheel brake cylinder
4 -  Rear right wheel brake cylinder
5 -  Brake system pressure accumulator -VX70-, LHD vehicles
Use suitable bleeder hose. It must sit tightly on bleeder 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

Hydraulic system
General notes on brake fluid Only use new brake fluid conforming to VW standard (VW 501 14).   Note ...

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

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