Passat Sedan 4Motion W8-4.0L (BDP) (2002)
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Brake Servo/Brake Master Cylinder
Assembly Overview
Note: Use only new brake fluid. Read information on brake fluid reservoir!
1 - T45 torx socket head bolt, 25 Nm
2 - Self-locking hex nut, 49 Nm
3 - Sealing plug
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Coat with brake fluid and press into brake fluid reservoir
4 - Brake fluid reservoir
5 - Oil seal
6 - Cap
7 - Supply hose
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From brake fluid reservoir to clutch master cylinder
8 - Vacuum hose
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Insert into brake servo unit
9 - Tandem brake servo
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Adjusting ball plunger Fig. 1
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On gasoline engines the vacuum required is taken from the intake manifold.
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From model year 2001, vehicles with a gasoline engine and automatic transmission are equipped with a brake vacuum pump
^
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 the servo unit is working properly, the pedal will drop slightly (servo
assistance becomes effective).
10 - Seal
