TT Quattro Coupe L4-1.8L Turbo (BEA) (2003)
Fig. 1 Removing, installing, and checking change-over valve
Removing
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Remove fuel tank.
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Remove valve by uncapping sideways and remove from delivery unit.
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Remove hose coupling by pressing release button.
Checking
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Blow into hose -2-.
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Button -1- at rest: it must not be possible to blow through hose.
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Button -1- pressed in direction of arrow: it must be possible to blow through hose.
Fig. 2 Removing, installing, and checking gravity valve
Removing
Note: Gravity valve -1- can only be replaced together with pressure retention valve and vent line -3-.
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Remove fuel tank.
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Unclip pressure retention valve.
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To remove, unclip gravity valve upward and lift out.
Checking
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Hold valve in installation position.
It must be possible to blow through hose.
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Tilt valve 45°.
It must not be possible to blow through hose.
Note: O-ring -2- must not be damaged; replace if necessary.