Removing and installing high-pressure valve for gas mode N372, version 1 — AUDI

🧭 Before you start

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

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• Due to limited space, the hand wheels for mechanical shut-off valves have been discontinued.Close mechanical shut-off valves using a commercially available socket.
• Natural gas system may not be operated until tested accordingly.

🔧 Engine codes this applies to

📐 17 workshop diagrams for BSX

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Remove rear silencer .
2. Remove protective covers from underbody 20Fuel tank; Assembly overview - fuel tank.
3. Separate connectors (1) from tank shut-off valve on all fuel tanks (natural gas).
4. Close mechanical shut-off valves (2) and (3) on all fuel tanks (natural gas). [Note: Due to limited space, the hand wheels for mechanical shut-off valves have been discontinued.Close mechanical shut-off valves using a commercially available socket.] [Note: Observe safety precautions when working on the natural gas system Safety precautions when working on vehicles with a gas system.]
5. ⚠ Release pressure in the system before working on the natural gas system. — Connect , and perform Guided Function "“Release pressure in natural gas high-pressure line”".

6. Clamp off coolant hoses (1) and (2) with hose clips up to 25 mm3094.
7. Loosen clamps (3) for coolant hose (1) (leading to throttle valve module J338) and (2) (leading to expansion tank).
8. Separate low-pressure line (4) and high-pressure line (5) at high-pressure valve for gas mode N372.
9. Disconnect connectors (6) and (9).
10. Remove securing bolts (7) and securing nut (8) from bracket. [Note: Natural gas system may not be operated until tested accordingly.]
11. ⚠ Operating the natural gas system without having tested it for leaks according to specifications may result in severe injuries or death.The necessary scope of the leakage test depends on the pressure section which has been worked on.Allocation: Different pressure sections of natural gas supply system — Check natural gas supply system for leaks .
12. Perform gas system test 35.1Description of work; Visual inspection of gas tanks for corrosion and leakage test.

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