Removing and installing natural gas tank 2: Audi A3 (CPWA)

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020)

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• When removing both natural gas tanks or renewing the mounting for natural gas tanks, natural gas tank 2 must be installed first.
• When working on the natural gas tanks, take care not to damage the surface of the tanks. If necessary, protect the tank surface using suitable workshop materials.
• Straightedge 500 mmVAS 6075 must be placed flat against fuel tank shut-off valve 1N361(2) and fuel tank shut-off valve 2N362(1).

🔧 Engine codes this applies to

📋 Procedure

1. Observe safety precautions .
2. Observe rules for cleanliness . [Note: When removing both natural gas tanks or renewing the mounting for natural gas tanks, natural gas tank 2 must be installed first.]
3. ⚠ Before using the gearbox support T40173, it is important to check that you have the correct version of this tool.Older versions of this tool must not be used and must be replaced with the latest version.Distinguishing features of latest version:On the latest version of this tool, the parts shown in (red) in the illustration (arrows) have a yellow chromated finish.If the support does not meet the specifications, proceed as follows:Germany: Contact Matra to have the tool replaced.All countries except Germany: Contact your Importer to have the tool replaced. — Remove both natural gas tanks with mounting .
4. Remove both natural gas tanks and mounting from engine and gearbox jackV.A.G 1383 A, turn them over and place on workbench with mounting facing downwards. [Note: When working on the natural gas tanks, take care not to damage the surface of the tanks. If necessary, protect the tank surface using suitable workshop materials.]
5. Remove bolts (arrows) from tensioning straps.

6. ⚠ The straps are under slight tension. — With the help of a second mechanic, pull tensioning straps apart slightly and guide out natural gas tank.
7. Renew protective strips for securing strap.
8. With the help of a second mechanic, pull tensioning straps apart slightly and guide natural gas tank into position.
9. Align natural gas tank using straightedge 500 mmVAS 6075(arrow).
10. Straightedge 500 mmVAS 6075 must be placed flat against fuel tank shut-off valve 1N361(2) and fuel tank shut-off valve 2N362(1).
11. Align tensioning straps (1) with protective strips (2) (dimension (a)).
12. Align tensioning straps (1) and protective strips (2) with mounting (3) (dimension (b)).
13. Align natural gas tanks using straightedge 500 mmVAS 6075(arrows).
14. Straightedge 500 mmVAS 6075 must be placed flat against fuel tank shut-off valve 1N361(2) and fuel tank shut-off valve 2N362(1).
15. Tighten tensioning straps alternately (arrows), paying attention to dimension (a) between natural gas tank and end of bolt.
16. Install both natural gas tanks with mounting .

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