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Removing and installing high-pressure pump > < Checking fuel pressure and residual pressure (up to high-pressure pump)

A4 Mk2

High-pressure pump - exploded view
   
High-pressure pump - exploded view
  Note
Illustration shows high-pressure pump on left side.
1 - High-pressure pump
q   Removing and installing → Chapter
2 - Bolt
q   9 Nm
3 - Seal
q   Renew
4 - Screw plug
q   10 Nm
5 - High-pressure pipe
  WARNING
t  The fuel system operates under high pressure. The pressure in the high-pressure part of the injection system must be reduced to a residual pressure prior to opening the system → Chapter.
t  A clean cloth must then be wrapped around the connection and the residual pressure dissipated by carefully loosening the connection.
q   Connections must not be damaged
q   Do not alter shape
q   25 Nm
6 - High-pressure pipe
  WARNING
t  The fuel system operates under high pressure. The pressure in the high-pressure part of the injection system must be reduced to a residual pressure prior to opening the system → Chapter.
t  A clean cloth must then be wrapped around the connection and the residual pressure dissipated by carefully loosening the connection.
q   Connections must not be damaged
q   Do not alter shape
q   25 Nm
7 - O-ring
q   Renew
8 - Roller tappet

   

Removing and installing high-pressure pump > < Checking fuel pressure and residual pressure (up to high-pressure pump)