audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Removing and installing high-pressure pump - vehicles up to 09.2005 > < Removing and installing toothed belt for high-pressure pump - vehicles from 02.2006 onwards

A4 Mk2

High-pressure pump on vehicles up to 09.2005 - exploded view
   
High-pressure pump on vehicles up to 09.2005 - exploded view
1 - Damper weight
q   Use counterhold tool -3036- when loosening and tightening central nut → Fig.
2 - Nut
q   70 Nm
q   Use counterhold tool -3036- when loosening and tightening → Fig.
3 - Toothed belt sprocket for high-pressure pump
q   Remove using puller -T40064- → Fig.
4 - Bolt
q   23 Nm
5 - High-pressure pump
  Caution
A new 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. Bleeding fuel system → Chapter
q   Removing and installing: vehicles up to 09.2005 → Chapter
q   Fuel system must be bled after installing high-pressure pump → Chapter.
6 - Seals
q   Renew
7 - Fuel supply line
8 - Banjo bolt
q   25 Nm
9 - Banjo bolt
q   25 Nm
10 - Seals
q   Renew
11 - Fuel return line
12 - Union nut for injection pipe
q   Tighten to 25 Nm
q   Tighten using ring insert (open-end) -V.A.G 1331/8- → Fig.
13 - Bolt
q   23 Nm
14 - Bolt
q   23 Nm
15 - Bracket for high-pressure pump
16 - Bolt
q   23 Nm
17 - Front bracket for high-pressure pump
18 - Bolt
q   9 Nm

   
Loosening and tightening central nut for high-pressure pump shaft
–  Use counterhold tool -3036- when loosening and tightening central nut -1-.
  A13-10030
Pulling off toothed belt sprocket for high-pressure pump
–  Use puller -T40064- to pull off belt sprocket for high-pressure pump.
  A13-10032
Tightening union nut for injection pipe at high-pressure pump
–  Tighten using ring insert (open-end) -V.A.G 1331/8-
  A13-10043

Removing and installing high-pressure pump - vehicles up to 09.2005 > < Removing and installing toothed belt for high-pressure pump - vehicles from 02.2006 onwards