S5 Quattro Coupe V8-4.2L (CAUA) (2009)
6 - Brake booster
‹› Adjusting ball head => [ Adjusting ball head ]
‹› Function test: With engine switched off, depress brake pedal firmly several times (to deplete vacuum in tool).
‹› Depress and hold brake pedal with average foot pressure and start engine. If brake booster is working properly, pedal will be felt to give
noticeably under foot (booster assistance becomes effective).
‹› With adhesive seal
‹› If malfunctioning: Replace as complete unit.
‹› Removing and Installing => [ Brake Booster ] See: Brake Booster
7 - Pedal support bolt
‹› 20 Nm
8 - Brake pedal
‹› Removing and Installing, with Manual Transmission => [ Mounting Bracket, with Manual Transmission ] See: Brake Pedal Assy/Service and
Repair/Mounting Bracket, with Manual Transmission
‹› Removing and Installing, with Automatic Transmission => [ Mounting Bracket, with Automatic Transmission ] See: Brake Pedal Assy/Service
and Repair/Mounting Bracket, with Automatic Transmission
9 - Brake light Switch F
‹› Removing and Installing => [ Brake Light Switch ] See: Lighting and Horns/Brake Light Switch/Service and Repair
10 - Bolt
‹› Connects brake booster to mounting bracket
‹› 25 Nm
11 - Hex nut
‹› For brake master cylinder
‹› 49 Nm
12 - Brake line
‹› Brake master cylinder to hydraulic unit
‹› 16 Nm
13 - Brake line
‹› Brake master cylinder to hydraulic unit
‹› 16 Nm
14 - Seal
‹› Replace
15 - Master brake cylinder
‹› Cannot be serviced. Replace as complete unit if malfunctioning.
‹› Removing and Installing => [ Brake Master Cylinder ] See: Hydraulic System/Brake Master Cylinder/Service and Repair/Brake Master
Cylinder