SEAT Workshop Service and Repair Manuals

Removing and installing high-pressure pump t  Removing → Anchor t  Fitting → 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	Hose clamp -T10051-, see equivalent → Anchor

t	Extractor -T40064-, see equivalent → Anchor

t	Pressure element -T40064/1-, see equivalent → Anchor

t	Torque wrench (5... 50 Nm) -V.A.G 1331-, see equivalent → Anchor

t  Base -3314-, see equivalent → Anchor   Caution Risk of malfunctions caused by dirt. Note → Chapter „Rules for cleanliness and instructions for working on fuel system“ The high-pressure fuel pump has very close tolerances and must not be allowed to run without fuel. To prevent this and to enable the engine to start quickly after parts have been renewed, it is important to observe the following: t  If components of the fuel system between the fuel tank and the high-pressure pump are removed or renewed, the first fuel filling operation must be performed. t  If a fuel pump, fuel line (between fuel tank and high-pressure pump) or fuel filter is removed or renewed, the fuel system must be bled before the engine is started for the first time. t  If the high-pressure pump is removed or renewed, the fuel system must be bled before the engine is started for the first time. Procedure for the initial fuel filling → Chapter Removing –  Remove toothed belt from camshaft and high-pressure pump → Chapter.

–  Remove bolt -2- and union nuts -1 and 3- and detach high-pressure pipe.

–  Remove bolts -1 and 3-. –  Release hose clips -2- and detach fuel hoses. –  Pull fuel lines upwards off cylinder head cover and press clear to one side.   Note Ignore -item 4-.

–  Unplug electrical connector -arrow- at fuel metering valve -N290-.

–  Using bit XZN 10 -T10385-, unscrew bolts -arrows- for high-pressure pump sprocket.

–  Counterhold using counterhold tool -T10051- and remove nut -1- at hub of high-pressure pump.

–  Apply puller -T40064- with thrust piece -T40064/1- and pin -T40064/2- as shown in illustration and pull hub off high-pressure pump. If necessary, counterhold using an open-end spanner (24 mm).

–  Unscrew securing bolts -arrows- for high-pressure pump. –  Carefully take out high-pressure pump. Installing Installation is carried out in reverse order. l  Tightening torque → Chapter „High-pressure pump - exploded view“ –  Install toothed belt for high-pressure pump → Chapter. –  Install high-pressure pipes → Chapter.   Caution t  The high-pressure pump must first be filled with fuel before the engine is started. The high-pressure pump must not be allowed to run while still empty. Initial fuel filling → Chapter. t  Running when dry causes irreparable damage to high-pressure pump. After renewing high-pressure pump and/or fuel pressure regulating valve -N276-, adaption must be performed. The adaption procedure is described in the Guided Fault Finding or Guided Functions; use a vehicle diagnostic tester.