Beetle L4-2.0L (AEG) (2000)
Brake Master Cylinder: Service and Repair
Brake Booster/Brake Master Cylinder, Overview
Hydraulic Unit, Brake Booster/Master Cylinder, Overview
Note:
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Complete master cylinders and brake boosters can be replaced separately.
1. Brake booster
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On gasoline engines vacuum is taken from the intake manifold.
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Diesel engines have a vacuum pump to create the required vacuum.
Functional check:
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With engine switched off, depress brake pedal firmly several times (to exhaust the vacuum in the unit).
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Depress brake pedal with average foot pressure, hold and start engine. If brake booster is working properly, pedal should give noticeably
underfoot (booster assistance becomes effective).
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If pedal does not give, replace brake booster.
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Check valve (in vacuum hose).
Functional check.
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Separating from brake pedal. See: Brake Pedal Assy/Service and Repair/Brake Pedal to Brake Booster, Disconnecting and Connecting
2. Cap
3. Brake fluid reservoir
4. Sealing plug
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Moisten with brake fluid and press into reservoir
5. Retainer pin
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Insert through brake master cylinder
6. Brake master cylinder
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Cannot be repaired. If faulty, replace as complete unit
7. Self-locking nut
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20 Nm (15 ft. lbs.)
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Always replace