| When carrying out repairs, install all parts supplied in repair kit. |
| Use only methylated spirits for cleaning the brake. |
| Apply thin coat of lithium grease -G 052 150 A2- to brake cylinder, piston and seal. |
| 1 - | Dust cap |
| Fit onto bleeder valve |
| 2 - | Bleeder valve |
| Before screwing in, grease thread with thin coat of lithium grease -G 052 150 A2- |
| 10 Nm |
| 3 - | Bearing bush |
| Insert into brake caliper. |
| 4 - | Guide pin |
| 30 Nm |
| 5 - | Cover caps |
| Insert into sleeve bearing. |
| 6 - | Brake caliper |
| 7 - | Sealing ring |
| Removing and installing → Chapter |
| 8 - | Piston |
| Apply thin coat of assembly paste G 052 150 A2 to piston before installing. |
| Removing and installing → Chapter |
| 7 - | Protective cap |
| Removing and installing → Chapter |
| When inserting piston, take care not to damage protective cap |
Assembly overview - brake caliper (PC57 brakes)Safety precautions for working on vehicles with Start/Stop system
Risk of injury due to unexpected engine start
In vehicles with activated Start/Stop system, the engine may start
up unexpectedly. The status of the Start/Stop system is indicated by a
message in the dash panel insert.
–
Deactivate Start/Stop syste ...
Removing and installing automatic anti-dazzle interior mirror, with rain and
light sensor -G397- and front camera for driver assist systems -R242-
Removing
–
Unclip front cover -1- from
front interior light -W1- and pull it downwards by approx. 10 mm
-arrows A-.
–
Release locking lugs -3- using
as small screwdriver.
...
Checking function and voltage supply of the fuel pump, engine code CWVA
Special tools and workshop equipment
required
Removal wedge -3409-
Multimeter e.g. hand-held multimeter -V.A.G 1526E-
...