volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking vent valve > < Vehicles with front-wheel drive
Vehicles with four-wheel drive
   
Vehicles with four-wheel drive
1 - Connector
q   Black, 4-pin
q   For fuel gauge sender -G- and fuel system pressurisation pump -G6-
2 - Connector
q   Black, 2-pin
3 - Return hose bracket
q   Clipped onto side of fuel delivery unit
4 - Return hose
5 - Gravity/overflow valve
q   To remove valve unclip upwards out of support.
q   Check valve for through-flow valve vertical: open, valve tilted 45 °: closed.
6 - Breather line
q   White.
q   Check for secure seating.
q   Clipped onto top of fuel tank.
q   To activated charcoal filter → Item
7 - O-ring
q   Renew
8 - Cap
9 - Seal
q   Renew if damaged.
10 - Securing bolt
11 - Tank flap unit
q   With rubber cup.
12 - Breather valve
q   To remove valve unclip sideways out of support.
q   Remove cap before installing → Item.
q   Checking → Chapter.
13 - Earth connection
q   Check for secure seating.
14 - 10 Nm
15 - Union nut, 80 Nm
q   Remove and install using union nut tool -3217-.
16 - Fuel gauge sender 2 -G169-
q   With suction jet pump: removing, installing and checking suction jet pump → Chapter
q   Note installation position on fuel tank: marking on sender must align with marking on fuel tank
q   Checking: → Current flow diagrams, Electrical fault finding and Fitting locations
17 - Seal
q   Renew if damaged.
q   When installing, insert seal dry into fuel tank opening.
q   Moisten with fuel only when installing flange.
18 - Breather line
q   Clipped onto top of fuel tank.
q   Check for secure seating.
19 - Fuel tank
q   When removing, support using engine and gearbox jack -V.A.G 1383 A-.
q   Removing and installing → Chapter.
20 - 25 Nm
21 - Securing strap
q   Note differing lengths.
22 - Clamping washer
23 - Heat shield
24 - Retaining strut
25 - Supply line
q   Black
q   Check for secure seating.
26 - Fuel filter
q   Fitting position: arrow indicates direction of flow.
27 - Screw-type clip
q   Note installation position → Chapter.
28 - Supply hose
q   To remove from fuel pump press release button on connecting piece
29 - Fuel delivery unit
q   Note installation position of flange on fuel tank → Fig..
q   Removing and installing → Chapter.
q   Checking fuel pump → Chapter
q   Clean strainer if soiled.
30 - Supply line
q   Black
q   Check for secure seating.
q   Clipped onto fuel tank
q   To pull off flange, press release button on connecting piece
31 - Return line
q   Blue or with blue marking.
q   Clipped onto side of fuel tank.
q   Check for secure seating.
q   Secure with spring-type clips.
q   From fuel return pipe on fuel rail: → Rep. Gr.24

   
Installation position of fuel delivery unit flange
Marking on flange must align with marking on fuel tank -arrows-.
Blue or blue marked return line -1- to connection marked -R-.
Black supply line -2- to connection marked -V-.
  Note
After installing fuel delivery unit flange, check that supply, return and breather lines are still clipped onto fuel tank.
  N20-0469

Checking vent valve > < Vehicles with front-wheel drive