A4 Quattro Wagon V6-3.0L (AVK) (2002)
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Vacuum Brake Booster: Service and Repair
Tandem Brake Servo / Brake Master Cylinder, Assembly Overview
Tandem brake servo / brake master cylinder, assembly overview
Note:
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Brake master cylinders cannot be dismantled any further, i.e. no provision is made for servicing.
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Use only fresh brake fluid. Refer to information on brake fluid reservoir.
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Assignment of brake pipe connections, Refer to Hydraulic Control Assembly, Service and Repair, Hydraulic Unit and Brake Lines
1. -a-Vacuum hose
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On gasoline engines the required vacuum is taken from the intake manifold.
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4-cylinder 1.6 ltr.. manual transmission
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4-cylinder 2.0 ltr.. manual transmission
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6-cylinder 2.5 ltr.. TDI
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Insert into brake servo unit
1. -b-Vacuum hose
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On gasoline engines the required vacuum is taken from the intake manifold.
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4-cylinder 1.6 ltr.. automatic transmission
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4-cylinder 2.0 ltr.. automatic transmission
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6-cylinder 3.0 ltr.. automatic transmission
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6-cylinder 3.0 ltr.. manual transmission
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Insert into brake servo unit
2. Trunnion bolt, 10 Nm
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Screw home
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Unscrew to remove brake fluid reservoir
3. Brake fluid reservoir with float warning indicator
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Functional test
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With the ignition switched on, remove the cap and press with your hand on the strainer that is visible. Warning lamp in instrument cluster
lights and acoustic alarm sounds.
