SEAT Workshop Service and Repair Manuals

Supplementary fuel pump -V393-: Removing and installing t  Supplementary fuel pump -V393-: Removing → Anchor t  Supplementary fuel pump -V393-: Installing → Anchor. Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  Engine sealing plug set -VAS 6122-, see equivalent → Anchor   Caution Risk of irreparable damage to high-pressure pump if allowed to run dry. If the fuel filter, the fuel line or the supplementary fuel pump -V393- have to be replaced, the fuel system must bled before starting the engine again for the first time → Chapter. Removing . Please observe safety precautions → Chapter. Observe rules for cleanliness → Chapter.

–  Remove the engine cover upwards -arrows-.   WARNING t  The fuel system is pressurised. Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection. t  The temperature of the fuel lines or the fuel may reach up to 100 ºC in extreme cases. Before opening the duct connections, allow the fuel to cool otherwise there is a risk of severe burns. t  Wear protective gloves. t  Wear eye protection. –  Unscrew the securing bolts of the engine coolant tank, and remove the tank.

–  Disconnect the connector -2-, undo the bolt -3- and remove the pressure sensor 1 of exhaust gases -G450- with bracket in the direction of the -arrow-.   Note Item -1- can be disregarded.

–  Separate the fuel return line -1- and fuel supply line -2- by pressing on the release tabs. –  Disengage fuel hoses -1, 2, 3- at bracket and remove bracket -4-.

–  Press release tab and unplug electrical connector -1-. –  Remove bolts -3, 4- and detach bracket -2- with supplementary fuel pump.

–  Unscrew bolts -1, 2, 3- and remove bracket -4-.

–  Detach electrical connector -1- from bracket and move clear at cable retainer -arrow-. –  Take supplementary fuel pump -6- with rubber mountings -5, 7- out of bracket -3-. –  Remove fuel hoses -2- and -4-. –  Seal the open lines of the fuel system using the engine plug set -VAS 6122-. Fitting . l  Tightening torque → Chapter Installation is carried out in the reverse order; note the following:   Note Secure all hose connections with the correct type of hose clips (same as original equipment) → Parts catalogue. –  Connect fuel hoses to fuel pipes and supplementary fuel pump according to markings. –  Engage fuel hoses carefully in mounting bracket. –  Bleed fuel system → Chapter.