Removing the brake master cylinder

Installation Location:

Fig 1: brake master cylinder

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Fig 2: Location of brake booster, master cylinder and fluid reservoir

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NOTE:

Before disconnecting the connector from the brake master cylinder (pressure sensor) first wipe off any moisture with a lint-free cloth.
Brake lines are to be sealed with suitable plugs.
In order to catch escaping brake fluid, place a cloth under the brake booster.

NOTE:

In the case of assembly work on the hydraulic connections, the electrical plug connections on the brake master cylinder must always be connected. This prevents the plug connections on the brake master cylinder and the inside of the plugs being splashed with brake fluid or water.
Clean any plug connections that have become dirty or damp during removal or fitting with a lint-free cloth.
Brake fluid on electrical contacts (even thinned brake fluid) leads to corrosion and may cause faults in the system.
Remove any escaping brake fluid immediately; if necessary, rinse with water and dry.

The brake master cylinder is located on the left in the engine compartment, under the cowl panel cover -arrow- on the brake booster. See Fig 2.

Fig 3: Identifying connectors

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1. Push both connectors -arrows- on the plenum panel (oxygen sensor cable) from the bracket. See Fig 3.

2. Open the cable clip on the plenum panel and loosen the cable.

3. Remove left plenum panel partition.

Fig 4: Brake fluid reservoir, cap and level sensor

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4. Disconnect the connector on the cover of the brake fluid reservoir and remove the cover -arrow- . See Fig 4.

5. Remove the brake fluid from the brake fluid reservoir by suction. To do this, use a double-acting hand pump.

Fig 5: Brake fluid reservoir lugs

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6. Bend both lugs on the brake fluid reservoir carefully outward and pull off the container upwards. See Fig 5.

7. Loosen the brake lines from the brake master cylinder.

Fig 6: Left front wheel brake line clip

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8. Unclip the brake line on the brake master cylinder to the left front wheel and remove the fastening clip -arrow- . See Fig 6.

9. Remove the brake master cylinder from the brake booster.

10. Remove the connector of the pressure sensor at the underside of the brake master cylinder.