Removing and installing high pressure accumulator — AUDI

🧭 Before you start

Fits: platform code 2C0

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Read through the rules for cleanliness and the instructions for working on the fuel system .Always follow these rules for cleanliness and instructions before starting work and while working on the fuel system. — Disconnect electrical connector (arrow) on fuel pressure regulating valve N276.
2. Disconnect electrical connector (B) on fuel pressure sender G247.
3. Pull vacuum hose (A) from cylinder head cover.
4. Remove fuel return hose from high pressure accumulator, releasing hose clip (arrow) to do so.
5. Open wiring harness retaining clips (arrows).

6. ⚠ Make sure that no wiring connections are damaged when disconnecting the heater-element connectors.Otherwise the whole wiring harness will need to be renewed.Do not close the pliers3314 too firmly when pulling the glow plug connectors off as otherwise the support sleeve can be damaged. — Position pliers3314 with groove (arrow A) on support sleeve shoulder (arrow B) and pull plugs off glow pin plugs.
7. Carefully pull connector off glow pin plug in (direction of arrow).
8. Unscrew bolt (2) and union nuts (1 and 3), and remove high-pressure line .
9. Unscrew bolts (2), lay coolant return line aside.
10. Unscrew bolts (arrows), lay coolant return line aside.
11. Remove line guide from high pressure accumulator and place to one side.
12. Remove high-pressure lines (1).
13. Unscrew bolts (arrows) and remove high pressure accumulator.
14. ⚠ For vehicles with solenoids, the learnt values from the fuel system must be reset following the renewal of the fuel pressure regulating valve N276. — Install high-pressure lines (without tension). When doing so, adhere to specified procedure and tightening sequence .

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