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Injection valves > < High pressure pump - Summary of components

Fabia Mk2

Removing and installing the high pressure pump
Removing and installing the high pressure pump
Special tools and workshop equipment required
t  Pliers for spring strap clamps
Precondition
l  The engine must be cold.
Removing
  Note
t  Safety precautions when working on the fuel supply system → Chapter.
t  Rules of cleanliness when working on the fuel supply system → Chapter.
–  Switch off the ignition and all electrical components and take out the ignition key.
  WARNING
The injection system consists of a high pressure part (max. pressure of 12 MPa = 120 bar) and a low pressure part (pressure of approx. 0.6 MPa = 6 bar).
Before opening the high pressure area, e.g. removing the high pressure pump, the fuel distributor, the injection valves, the fuel pipes or the fuel pressure sender -G247-, the fuel pressure in the high pressure area with a remaining pressure of approx. 0.6 MPa (6 bar) must be reduced. The procedure for this is described in the chapter „release pressure in the high pressure area of the fuel system“ → Chapter.
   
–  Disconnect the plug -1- and the fuel feed line -2- from the high pressure pump.
  Note
Collect the fuel which flows out with a cleaning cloth.
–  Slacken the union nuts -3- at the high pressure line.
  Note
Hold the screwed connections at the high pressure pump and at the fuel distributor when slackening the union nuts with a wrench.
–  Uniformly release the fixing screws -4- and remove the high pressure pump with roller tappet from the cylinder head cover.
Install
  Note
t  Moisten the roller tappet of the high pressure pump with clean engine oil.
t  Always replace the O-ring of the high pressure pump.
–  Slide the roller tappet -1- into the camshaft housing.
  N15-10562
–  Insert a new, oiled O-ring -2- into the slot of the high pressure pump -3-.
–  Position the high pressure pump -3- on the cylinder head cover.
  N24-10437
–  First of all screw in the fixing screws -4- sufficiently until the bolt heads are positioned on the flange.
–  Then tighten the fixing screws -4- evenly.
   Tightening torque: 20 Nm
–  Screw on the union nuts of the high pressure line -3- by hand.
  Note
Hold the screwed connections at the high pressure pump and at the bottom part of intake manifold/fuel distributor when tightening the union nuts with a wrench.
–  Tighten the union nuts -3- at the high pressure line to 25 Nm.
–  Attach the fuel feed line -2- and the plug -1- on the high pressure pump.
Further installation occurs in a similar way in reverse order to removal.
  N15-10562

Injection valves > < High pressure pump - Summary of components