S4 V8-4.2L (BHF) (2004)
8. Locking ring
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Use ring nut spanner 3087 to remove and install
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Tighten to 120 Nm
9. Seal
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Always replace
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To install, place into opening of fuel tank when dry
10. Connector flange
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For fuel delivery unit
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Not individually replaceable
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Installation position: Note arrow marking
11. Fuel pump (FP) unit
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Can be replaced only complete with connector flange
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Fuel Pump (FP) electrical testing
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Checking delivery quantity
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Checking residual pressure
12. O-rings
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Always replace
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Check installation position
13. Fuel return line
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To remove the Fuel Pump (FP), unclip union piece and disconnect fuel return line at union piece -item 1-, press release button to do so
14. Fuel screen
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Not individually replaceable
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Clean if dirty
Fig. 1 Releasing harness connector
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To disconnect the multi-pin harness connector at Fuel Pump (FP) -G6-, the harness connector must be released. This can be done by hand or by
using a small screwdriver -arrow-.