VW Golf manuals

Volkswagen Golf Service & Repair Manual: Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Volkswagen Golf Service & Repair Manual / Brake system (hybrid) / Brakes, hydraulics, regulator, servo / Brake servo and brake master cylinder / Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Special tools and workshop equipment required
   
Torque wrench -V.A.G 1331-
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Torque wrench -V.A.G 1410-
Tool inserts (11 mm) -V.A.G 1331/2-
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Brake filling and bleeding equipment -VAS 5234-
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Sealing plug repair kit -1H0 698 311 A-
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Fitting locations:
2 -  Brake servo and brake master cylinder
3 -  Brake system pressure accumulator -VX70-
Removing:
–  Observe safety precautions when working in the area of high-voltage components → Chapter.
–  Observe the risk classification of the high-voltage system → Electric drive; Rep. gr.00.
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

Danger to life due to high voltage
The high-voltage system is under high voltage. If high-voltage components are damaged, there is a risk of severe or fatal injury due to electric shock.
–  Carry out visual inspection of high-voltage components and cables.
–  Never use cutting or forming tools, or any others with sharp edges.
–  Never use heat sources such as welding, soldering, thermal bonding or hot air.
 
 
–  Disconnect battery → Electrical system; Rep. gr.27.
–  Remove power and control electronics for electric drive -JX1- → Electrical system; Rep. gr.93.
–  Remove bracket for power and control electronics for electric drive -JX1- → Electrical system; Rep. gr.93.
–  Draw off as much brake fluid as possible from brake fluid reservoir using brake filling and bleeding equipment -VAS 5234-.
–  Place sufficient lint-free cloths in the area of the brake system pressure accumulator -VX70--1-.
   
–  Unscrew brake line -1- from brake system pressure accumulator -VX70--2-.
–  Seal threaded hole immediately using sealing plugs -1H0 698 311 A-.
–  Fit a dust cap from the bleeder valve onto brake line.
–  Pull brake system pressure accumulator -VX70--2- together with bracket -4- and rubber dampers -5- upwards off bracket -6-.
–  Slightly tilt brake system pressure accumulator -VX70-, then release and pull off connector -3-.
Installing:
Install in reverse order. Note the following points:
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

–  Ensure rubber dampers -5- are seated correctly in bracket -4- of brake system pressure accumulator -VX70-.
–  Ensure that retaining pins have been fully and evenly inserted into rubber dampers.
–  Ensure secure seating by pulling.
Ensure that rubber dampers of retainer are not pressed out of bracket when installing. After installation, check that the brake system pressure accumulator -VX70- is securely seated, otherwise malfunction can occur.
–  Bleed brake system → Chapter.
–  Subsequently bleeding the brake system → Chapter.
–  Perform basic setting for electromechanical brake servo → Vehicle diagnostic tester.
Specified torques
→ Chapter „Assembly overview - brake servo/brake master cylinder, LHD vehicles“
→ Chapter „Assembly overview – Brake system pressure accumulator -VX70-“
→ Electrical system; Rep. gr.93
→ Electrical system; Rep. gr.27.
 

Removing and installing brake system pressure accumulator -VX70-, LHD vehicles

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