Removing and installing gas pressure regulator with high-pressure valve for gas mode N372 — AUDI

🧭 Before you start

Fits: VW Caddy III (2K, 2004–2015); platform code 2C0

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• Due to limited space, the handwheels for mechanical shut-off valves have been discontinued.Close the mechanical shut-off valves using a commercially available spanner.
• Risk of scalding! Allow engine to cool before pulling off coolant hoses. — Open clips and pull coolant hoses (2) off.
• Disconnect low-pressure line (4) and high-pressure line (3) at gas pressure regulator (counterhold on union with an open-end spanner).

🔧 Engine codes this applies to

📋 Procedure

1. Remove rear silencer 26.
2. Remove protective covers on underbody:
3. Separate connectors (1) from tank shut-off valve on all natural gas tanks.
4. Close mechanical shut-off valves (2) and (3) on all natural gas tanks. [Note: Due to limited space, the handwheels for mechanical shut-off valves have been discontinued.Close the mechanical shut-off valves using a commercially available spanner.] [Note: Observe safety precautions when working on natural gas system .]
5. ⚠ Release pressure in the system before working on the natural gas system. Connecting and carrying out Guided Function "“Releasing pressure in the natural gas high-pressure line”". — Clamp off coolant hoses (2) with hose clips up to 25 mm3094.

6. ⚠ Risk of scalding! Allow engine to cool before pulling off coolant hoses. — Open clips and pull coolant hoses (2) off.
7. Disconnect connectors (1).
8. Disconnect low-pressure line (4) and high-pressure line (3) at gas pressure regulator (counterhold on union with an open-end spanner).
9. Unscrew securing bolts and nuts (arrows) on bracket.
10. ⚠ On fuel lines that are newly installed (initial installation), union nuts should first be tightened hand-tight, then turned 180° further.In case of repair, union nuts are also first tightened hand-tight, then turned 90° further. — Carry out leakage test .

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