New Beetle L4-2.0L (BEV) (2004)
Fig. 3 Checking pressure retention valve
The pressure retention valve is opened in both through-flow directions from the gravity valve/pressure retention valve (arrow -1-).
It is opened only in one through-flow direction from the EVAP system/solenoid valve junction piece (arrow -2-).
Checking direction of valve flow
A) Union 1 - 1:
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Flow in both directions
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Union -2- is closed
B) Union 1 - 2:
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Flow in both directions
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Union -3- is closed
C) Union 1 - 2:
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Flow in only one direction
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Union -3- is closed
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Valve must close when a vacuum is applied to union -1 -
Fig. 4 Installed position of screw-type clamp for fuel filter
Note: The fuel filter is illustrated viewed from the front.
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Install screw-type clamp (arrow) as shown in illustration.
Ensure sufficient clearance between clamp fastener and fuel tank:
Dimension "a" must be at least 5 mm