Polo Mk4
|
WARNING
| 1 - | ABS control unit -J104- |
| q | Remove and install → Chapter |
| 2 - | Hydraulic ABS unit -N55- |
| q | In the hydraulic unit the ABS hydraulic pump -V64- and the intake and exhaust valves are checked through self-diagnosis |
| q | The ABS hydraulic pump -V64- and the valve block may not be separated |
| q | When replacing the hydraulic unit, seal the old part with the plugs from the repair set number ET 1H0 698 311 A |
| q | Remove and install → Chapter |
| 3 - | External screw |
| q | 3 Nm |
| 4 - | Brake pressure sensor 1 -G201- |
| q | remove and install → Chapter |
| 5 - | Brake pipe connection |
| q | Hydraulic unit for left front brake caliper |
| q | Identification in the hydraulic unit -VL- |
| 6 - | Brake pipe connection |
| q | Hydraulic unit for right front brake caliper |
| q | Identification in the hydraulic unit -VR- |
| 7 - | Brake pipe connection |
| q | Brake cylinder/floating plunger loop for the hydraulic unit |
| q | Identification in the hydraulic unit -HZ2- |
| 8 - | Brake pipe connection |
| q | Brake cylinder/pressure plunger loop to the hydraulic unit |
| q | Identification in the hydraulic unit -HZ1- |
| 9 - | Brake pipe connection |
| q | for the left rear brake caliper |
| q | Identification in the hydraulic unit -HL- |
| 10 - | Brake pipe connection |
| q | for the right rear brake caliper |
| q | Identification in the hydraulic unit -HR- |
| 11 - | Servo brake |
| q | On gasoline engines, the vacuum required is removed from the intake manifold. |
| q | On diesel engines, a vacuum pump is installed to create vacuum. |
| q | Check the operation |
| q | Press the brake pedal several times until the end with the engine stopped (This eliminates any remaining vacuum inside the device). |
| q | Now, keep the brake pedal pressed in the braking position with medium force and start the engine. When the servo brake is working properly, this can be felt with a foot on the brake pedal (the amplification is active). |
| q | In case of faults, replace completely |
| q | Check valve (in the vacuum hose) → Chapter |
| q | separate from the brake pedal → Chapter |
| q | remove and install → Chapter |
| 12 - | Sealing |
| q | to servo brake |
| 13 - | Self-locking hex head nut |
| q | replace |
| q | 28 Nm |
| 14 - | Sealing ring |
| q | replace |
| 15 - | Self-locking hex head nut |
| q | replace |
| q | 20 Nm |
| 16 - | Brake cylinder |
| q | cannot be repaired. Where faults occur, replace completely. |
| q | remove and install → Chapter |
| 17 - | Retaining pin for the brake fluid reservoir |
| q | insert through the brake cylinder |
| 18 - | Sealing plug |
| q | moisten with brake fluid and press in the brake cylinder |
| 19 - | Sealing plug |
| q | Connection for vacuum hose |
| 20 - | Brake fluid reservoir |
| 21 - | Plug |
| 22 - | Self-locking hex head nut |
| q | replace |
| q | 20 Nm |
| 23 - | Support |
| 24 - | Stud |
| q | Stud welded to the body |
| 25 - | Screws |
| q | 8 Nm |
| 26 - | Support |
| 27 - | Screws |
| q | 8 Nm |
| 28 - | Self-locking hex head nut |
| q | replace |
| q | 20 Nm |
| 29 - | Stud |
| q | Stud welded to the body |
