audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Testing fuel pump (electrical test) > < Removing and installing fuel tank with attachments
Fuel supply system - Petrol engines
Fuel supply system - front-wheel drive
Overview of components: fuel delivery unit and fuel gauge sender
 
A20-0253
  • Oil seal
    • ◆ Renew
    • ◆ When installing, fit seal (dry) in opening in fuel tank
  • O rings
    • ◆ Always renew
    • ◆ Ensure correctly fitted
  • Return pipe
    • ◆ From fuel manifold
    • ◆ Mark pipe before disconnecting
    • ◆ Note direction of arrow on flange
 
A20-0253
  • Supply pipe
    • ◆ To fuel manifold
    • ◆ Mark pipe before disconnecting
    • ◆ Note direction of arrow on flange
  • Flange
    • ◆ Removing and installing
    • ◆ Installation position: see arrow
      => Page 20-39
  • Connector
    • ◆ For fuel pump and fuel gauge sender -G
  • Pipe retainer
    • ◆ Installation position: see illustration
    • ◆ Hold in position when tightening union nut
 
A20-0253
  • Union nut, 60 Nm
    • ◆ Remove and install with spanner 3217
  • Electrical wires
    • ◆ To fuel pump
    • ◆ Secure to -Item 10- with fuel-resistant cable ties
  • Supply pipe
    • ◆ Fuel pump/baffle housing
    • ◆ Position => Page 20-37
  • Nut M4 - 1.5 Nm
    • ◆ Fit toothed washer under nut
  • Nut M5 - 2 Nm
    • ◆ Fit toothed washer under nut
 
A20-0253
  • Fuel delivery unit
    • ◆ Removing and installing
      => Page 20-34
    • ◆ Testing fuel pump (electrical test)
      => Page 20-27
    • ◆ Checking holding pressure:

=> Injection and ignition system; Repair Group 24

  • Fuel filter screen
    • ◆ Fitted onto fuel delivery unit
    • ◆ Cannot be replaced separately
    • ◆ Clean if dirt has collected
  • Baffle housing (lower section)
    • ◆ Secured in place in fuel tank
    • ◆ Cannot be dismantled
 
A20-0253
  • Fuel gauge sender -G
    • ◆ Block-shaped float
    • ◆ Testing => Page 20-41
    • ◆ Removing and installing
      => Page 20-43
  • Return pipe
    • ◆ Connected to inside of flange
    • ◆ Press release tabs on connection to pull off

Testing fuel pump (electrical test) > < Removing and installing fuel tank with attachments