SEAT Workshop Service and Repair Manuals

Removing and installing rail element (high-pressure reservoir) Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Torque wrench -V.A.G 1331-, see equivalent → Anchor.

t	Ratchet -V.A.G 1331/1-, see equivalent → Anchor

t	Pin tool e/c 17 -V.A.G 1331/6-, see equivalent → Anchor

t	Measuring container -T40055-, see equivalent → Anchor

t  Base -3314-, see equivalent → Anchor »Carry out the following work sequence« Removal:   WARNING t  First read through the rules for cleanliness and the instructions for working on the fuel system → Chapter. t  Follow these instructions and rules for cleanliness before starting work and while working on the fuel system. –  Remove engine cover panel → Chapter. –  Unscrew bolt -3- from retainer for high-pressure line.

–  Unscrew fuel return line bolts -arrows-.

–  Remove fuel high-pressure line -2-; loosen union nuts on high-pressure pump -5- and rail element (high-pressure accumulator) -1- to do this.

–  Open cable guide fasteners -arrows- to free wiring harness.

–  Position pliers -3314- with groove -arrow A- on support sleeve shoulder -arrow B-.

–  Carefully pull connectors off glow pin plugs -in direction of arrow-.

–  Pull off the electrical connectors -1...6-. –  Replace the seals of the connectors -2-, -3-, -4- → Item → ETKA (Electronic parts catalogue).   Caution t  Mark allocation of high-pressure fuel lines to cylinders; they must only ever be reused on the same cylinder. t  Observe rules for cleanliness when working on the injection system. t  The open connections must be sealed immediately with a suitable cap. –  Remove high-pressure lines between injectors (solenoid valve injectors) and rail element (high-pressure accumulator). –  Place the removed high-pressure lines on a clean cloth.

–  Remove rail element (high-pressure accumulator); unscrew the two bolts -arrows- to do this. Installation Installation is carried out in the reverse sequence; note the following:

–  Tighten securing bolts -arrows- first to Max. Tighten 1 to 2 Nm. l  It must be possible to move the rail so the hoses can be fitted free of tension. –  Install high-pressure pipes → Chapter.   Note t  Renew retaining clips. t  Note identification marks for cylinder allocation when re-installing high-pressure pipes. t  The high-pressure pipes can be re-used after performing the following checks: t  Check taper seal of high-pressure line for deformation and cracks. t  The bore of the pipe must not be distorted, restricted or otherwise damaged. t  Corroded lines should no longer be used. t  Tightening torques: Fuel system - Assembly overview → Chapter.