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Removing and installing the fuel delivery unit on four-wheel drive vehicles (Octavia II) > < Checking fuel pump (Superb II, Octavia II)

Octavia Mk2

Removing and installing fuel delivery unit (Octavia II)
Removing and installing fuel delivery unit (Octavia II)
Special tools and workshop equipment required
t  Key -T30101 (3087)-.
Condition
l  The fuel tank must not be more than 3/4 full.
Removing
  Note
t  Drain the fuel tank → Chapter.
t  Safety precautions when working on the fuel supply system → Chapter.
t  Observe the regulations concerning cleanliness when working on the fuel supply/injection system → Chapter.
–  Switch off ignition and withdraw ignition key.
–  Removing rear seat bench → Body Work; Rep. Gr.72.
–  Remove the cover from the fuel delivery unit.
  Note
For vehicles with auxiliary heating, the plug connection for the dosing pump -V54- must be disconnected additionally.
   
–  Disconnect the plug, the black feed line -2- and the blue return-flow line -1- from the flange.
  Note
t  Press in the securing ring in order to unlock the lines.
t  On vehicles with auxiliary heating the suction line for the dosing pump -V54- must be pulled out additionally (open lower clamp).
  S20-0195
–  Open lock ring with the wrench -T30101-.
  Note
When installing, ensure that the float arm of the sender for fuel gauge display -G- is not bent.
–  Pull the fuel delivery unit and the gasket ring out of the opening of the fuel tank.
  Note
You must empty the old delivery unit before disposing of it if you wish to replace the fuel delivery unit.
Install
The fuel delivery unit is installed in the reverse order. However, pay attention to the following:
  Note
t  Insert new dry gasket ring into the opening of the fuel tank.
t  The gasket must only be moistened from inside with fuel before assembly of the fuel delivery unit.
t  When installing, do not bend the float arm of the fuel gauge sender unit -G-.
  S20-0151
t  Fitting position of the fuel delivery unit: The marking -3- on the flange must point against the direction of travel. The fuel delivery unit can only be installed in this position.
t  Do not interchange feed line and return-flow line.
t  Tighten the lock ring to 110 Nm.
t  Make sure the fuel lines fit tightly.
t  After installing the fuel delivery unit, check whether the feed line and the return-flow line are clipped in place on the fuel tank.
  S20-0195

Removing and installing the fuel delivery unit on four-wheel drive vehicles (Octavia II) > < Checking fuel pump (Superb II, Octavia II)