volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Removing and installing fuel delivery unit, four wheel drive > < Removing and installing fuel tank with its attachments and fuel filter, front wheel drive
6-cyl. fuel injection engine Mechanics
Removing and installing parts of fuel supply system
Removing and installing fuel tank with its attachments and fuel filter, four wheel drive
 
W20-0002

Special tools, workshop equipment, test and measuring appliances and auxiliary items required

  • ◆ 3217 Ring nut spanner
  • ◆ V.A.G 1383 A Gearbox jack
  • ◆ V.A.G 1331 Torque wrench (5...50 Nm)
 
N20-0003

After all work on the fuel delivery unit or the fuel gauge sender ensure that the supply/return hoses (partly corrugated pipes) item 11 and item 13 do not touch the fuel tank (transmission of pump noises).

  • Cap
    • ◆ Renew seal if damaged
  • Retaining ring
  • Rubber cup
  • Earth connection
  • O-ring
    • ◆ Renew if damaged
  • Vent valve
    • ◆ Checking =>Page 20-7, Fig. 2
  • Filler neck
 
N20-0003
  • Return pipe
    • ◆ Blue
    • ◆ From fuel manifold

=> Repair group 24; Motronic injection and ignition system; Servicing injection part

  • Union nut
    • ◆ Remove and install with 3217
  • Flange
    • ◆ Note fitting position on fuel tank => Page 20-7, Fig. 1
  • Supply hose
  • Sealing ring
    • ◆ Coat with fuel when installing
    • ◆ Renew if damaged
  • Return hose
  • Fuel gauge sender
 
N20-0003
  • Fuel delivery unit
    • ◆ Removing and installing
  • Strainer
  • Securing strap
    • ◆ Note differing length
  • 25 Nm
  • Fuel tank
    • ◆ Before removing first remove differential cross beam:

=> Running gear; Repair Group 42; Servicing rear axle (vehicles with four wheel drive)

    • ◆ Support with engine and gearbox jack V.A.G 1383 A when removing
  • 20 Nm
  • Spring clip
  • Bracket
    • ◆ For fuel filter
 
N20-0003
  • Supply pipe
    • ◆ Black
    • ◆ To fuel manifold

=> Repair group 24; Motronic injection and ignition system; Servicing injection part

  • Fuel filter
    • ◆ Fitting position: Arrow points in direction of flow
  • Non-return valve
  • Circlip
  • Sealing collar
  • Vent pipe
    • ◆ To activated charcoal filter
      , Pos. 1
 
N20-0003
  • 10 Nm
  • Gravity valve
    • ◆ To remove valve unclip upwards out of filler neck
    • ◆ Check valve for through-flow
      valve vertical: open,
      valve tilted 45 °: closed
  • Spacer bush
 
V20-1041

→ Fig. 1     Installation position of fuel delivery unit flange

Marking on the flange must align with marking on the fuel tank.

 
V20-1040

→ Fig. 2     Checking vent valve

Lever in rest position: Closed

Lever pushed in direction of arrow: Open

Removing and installing fuel delivery unit, four wheel drive > < Removing and installing fuel tank with its attachments and fuel filter, front wheel drive