Workshop Manuals Factory service & repair Aston Martin
01 00 Introduction02 01 Body system03 02 Frame and mounting04 03 Engine05 04 Suspension06 05 Driveline07 06 Brake system08 07 Transmission09 08 Clutch10 09 Exhaust11 10 Fuel12 11 Steering13 12 Climate control14 13 Information, gauge and warning15 14 Power supply16 15 Vehicle entertainment17 16 Vacuum distribution18 17 Lighting19 18 Electric distribution and electronic control20 19 Electronic features21 20 Appendix and glossary
Aston Martin DB9 Factory Workshop Manual (Issue 2, 2005)07 · 06 Brake system
07 · Brakes

Brake System (06.00)

Make
Aston Martin
Model
DB9 Factory Workshop Manual
Year
Issue 2, 2005
Section
Brake Actuation System › Brake System (06.00)
06 Brake systemBrake System (06.00)

Brake System (06.00)

Brake Actuation System (06.06)

Description

Tandem Master Cylinder

Diagram of the tandem master cylinder reservoir showing MAX and MIN level indicators

The short-stroke tandem master-cylinder controls two separate brake circuits which are jointly activated by the brake pedal. In the event of a major leak in one system, the other will still function. The two systems are supplied by a common brake fluid reservoir.

Schematic diagram of the two brake circuits (Circuit 1 and Circuit 2) connected to the master cylinder and wheel calipers

A pressure sensor attached to the master-cylinder provides the ABS / DSC module with brake pressure information. This information informs the system how hard the driver is braking and is used as an aid for the ABS / DSC to achieve accurate brake pressure control.

Brake Fluid Reservoir

The brake fluid reservoir is mounted directly on the tandem master cylinder and secured with a pin. Two stub pipes, on the base of the reservoir, locate into the primary and secondary chambers of the tandem master cylinder.

An integral fluid-level switch is incorporated in the reservoir. If the brake fluid level is low, the brake warning lamp in the Driver Information Module (DIM) will illuminate and ‘LOW BRAKE FLUID’ will be displayed in the message center right.

Diagram of the brake fluid reservoir showing the plug, pin, 'O' rings, and MAX/MIN level markings

Specifications

Oils/Greases

Oils/Greases
Brake FluidCastrol Super Response Dot 4

Torque Figures

DescriptionNm.lb. / ft.
Master Cylinder Mount25 (+/- 4)18.5 (+/- 3)
Brake Pipe Unions1713
Brake fluid reservoir securing pin43
Pressure Sensor35 (+/- 2)26 (+/- 1.5)

Parts & tools for this job For 2005 Aston Martin DB9

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