audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Removing and installing high-pressure pump > < High-pressure pump
High-pressure pump - exploded view
   
High-pressure pump - exploded view
1 - Bracket for ancillaries
q   Removing and installing → Rep. gr.13
2 - Bolt
q   2x
q   Renew
q   20 Nm + turn +180° further
3 - Hub
q   Use counterhold tool -T10051- to loosen and tighten
q   To remove, use puller -T40064-
4 - High-pressure pump sprocket
5 - Bolt
q   3x
q   Renew
q   20 Nm
6 - Nut
q   95 Nm
7 - Bolt
q   Renew
q   20 Nm + turn +45° further
8 - High-pressure pump
  Caution
Risk of malfunctions caused by dirt.
Observe → Chapter „Rules for cleanliness and instructions for working on fuel system“.
Running when dry causes irreparable damage to high-pressure pump.
After installing the high-pressure pump, the pump must first be filled with fuel before the engine is started for the first time → Chapter.
q   With fuel metering valve -N290- (do not open)
q   After renewing high-pressure pump or fuel pressure regulating valve -N276-, learnt values must be re-adapted; see „Guided Functions“ in → Vehicle diagnostic tester
q   Removing and installing → Chapter
9 - High-pressure pipe
q   Between high-pressure pump and fuel rail
q   Do not alter shape
q   Check for damage before re-installing
q   Always renew high-pressure pipe when renewing high-pressure pump.
q   Removing and installing → Chapter
q   Lubricate threads of union nuts with clean engine oil
q   25 Nm
10 - Fuel supply hose
11 - Fuel return line

   

Removing and installing high-pressure pump > < High-pressure pump