Skoda Workshop Service and Repair Manuals

Removing and installing the fuel delivery unit on vehicles with four-wheel drive Special tools and workshop equipment required t  Wrench for the lock ring -T30101 (3087)- t  Protective gloves Condition l  The fuel tank must not be more than 1/3 full. Removing   Note t  If necessary, 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 the ignition and pull out the ignition key. –  Removing rear seat bench → Body Work → Rep. Gr.72. –  Remove the cover from the fuel delivery unit.   Note t  For vehicles with auxiliary heating, the plug connection for the dosing pump -V54- must also be disconnected. t  Two types of fuel delivery units are installed in the vehicles, which can be recognized on the different flanges. Fuel delivery unit type 1

–  Disconnect the plug as well as the black fuel feed line -1- and the blue fuel return-flow line -2- from the flange.   Note t  Press in securing ring in order to unlock the lines. t  For vehicles with auxiliary heating the suction hose for the dosing pump -V54- must be pulled out additionally (open lower clamp).

–  Open lock ring with the wrench -T30101-. –  Pull out closing flange and gasket ring of the fuel delivery unit from the opening of the fuel tank and place to the side with the connected lines.

–  Separate through the opening of the fuel tank the jetstream line -1- to the suction jet pump, to do so press the release button. –  Unhook the fuel delivery line -2- at the fuel delivery unit, to do so pull the catch to the top -arrow-.   Note t  You must wear protective gloves for removing the fuel delivery unit. t  Take the fuel delivery unit out of the fuel tank in such a way that the electrical cables and the fuel hoses are not damaged and that the float arm of the sender for the fuel gauge display -G- is not bent. t  You must empty the old fuel delivery unit before disposing of it if you wish to replace it. –  Pull the fuel delivery unit out of the opening of the fuel tank. Fuel delivery unit type 2

–  Disconnect the plug as well as the black fuel feed line -1- and the blue fuel return-flow line -2- from the flange.   Note t  Press in securing ring in order to unlock the lines. t  For vehicles with auxiliary heating the suction hose for the dosing pump -V54- must be pulled out additionally (open lower clamp).

–  Open lock ring with the wrench -T30101-.

–  Slightly raise the closing flange and check if the spring -2- is still fastened on the flange -1-.    If the spring -2- lies loose on the guide pipe -3-, hold the spring with the fingers when removing the closing flange. –  Pull out closing flange and gasket ring of the fuel delivery unit from the opening of the fuel tank and place to the side with the connected lines.

–  Separate through the opening of the fuel tank the jetstream line -1- to the suction jet pump, to do so press the release button. –  Pull off the fuel delivery line -2- from the fuel delivery unit.   Note t  You must wear protective gloves for removing the fuel delivery unit. t  Take the fuel delivery unit out of the fuel tank in such a way that the electrical cables and the fuel hoses are not damaged and that the float arm of the sender for the fuel gauge display -G- is not bent. t  You must empty the old fuel delivery unit before disposing of it if you wish to replace it. –  Pull the fuel delivery unit out of the opening of the fuel tank. Install Installation occurs in reverse order to removal. Pay attention to the following: –  Insert the fuel delivery unit into the fuel tank with the closing flange placed to the side. Thus, do not bend the float arm of the fuel gauge sender unit -G-. –  Attach fuel delivery line and jetstream line. –  Insert the new dry gasket ring into the opening of the fuel tank and moisten only from the inside with fuel for installing the closing flange. Fuel delivery unit type 1

–  Insert the spring -2- into the guide bore -arrow- and place the guide -1- of the closing flange onto the guide -3- at the fuel delivery unit. Fuel delivery unit type 2

l  The spring -2- must be fastened to the retaining lugs -1- of the closing flange. –  First of all guide the guide pipe -3- into the guide bore -4-. –  Then lower the closing flange in such a way that the guide pipe -6- locks into the guide bore -5-.   Note

Pay attention that the electrical lines -1- and the fuel feed line -3- are positioned as shown in the illustration so that they do not block the float arm -2-. Continued for the fuel delivery unit type 1 and type 2 –  Press the closing flange to the bottom and move the closing flange into the fitting position. Further information:

Fuel delivery unit - type 1

Fuel delivery unit - type 2 t  Observe the fitting location of the fuel delivery unit. The tabs -2- on the closing flange must be between the tongues -1- and -3- at the fuel tank. The -thick arrow- points in the direction of travel. t  Tighten lock ring to 110 Nm. t  Do not mix-up the fuel feed line and the fuel return-flow line. t  Make sure the fuel lines fit tightly. t  After installing the fuel delivery unit, check whether the fuel feed line and the fuel return-flow line are still clipped in place on the fuel tank.