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 |
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| Brake filling and bleeding equipment -VAS 5234- |
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| 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. |
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General notes on brake fluid
Only use new brake fluid conforming to VW standard
(VW 501 14).
Note
...
Note
Carry out subsequent bleeding when:
brake pedal travel is too long or so-called
»soft brake pedal«
...
Other materials:
Assembly overview - accelerator module
1 -
Bolt
6 Nm
2 -
Electrical connector
Make sure it is engaged properly; pull to check that plug-in
connector is correctly engaged
3 -
Accelerator pedal module -GX2-
...
Relay carriers, fuse carriers, electronics box (engine compartment)
1 -
Front cover
For electronics box in engine compartment
2 -
Nut
Specified torque: 9 Nm
3 -
Nut
Specified torque: 9 Nm
4 -
Wire/line
...
Engine cooling
Since higher demands are placed on the engine cooling system
when a trailer is being towed, the cooling system is uprated in
conjunction with factory fitted towing attachments if this is a
technical necessity. This is carried out, for example, by
install ...
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Hydraulic system
Subsequent bleeding of hydraulic system