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| Tool inserts -V.A.G 1331/2- |
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| Tightening union nut on high-pressure pump → Fig. |
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| The connections of the high-pressure pipes must not be damaged. |
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| Do not bend the high-pressure pipes out of shape. |
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| Do NOT bend open retaining clamps for fuel pipe. |
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| If one of the retaining clamps has been bent open or the fuel pipe has to be renewed, the retaining clamps must also be renewed. |
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| Lubricate threads of union nuts with fuel. |
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| Hand-tighten union nuts on high-pressure pipes (ensure that pipes are not under tension). |
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| To tighten high-pressure pipe on fuel rail, use torque wrench -V.A.G 1331- with open-end ring spanner (tool insert -V.A.G 1331/2-). |
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| Tightening torque for union nut on high-pressure pipe: 25 Nm |
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| Do not install retaining tabs until high-pressure pipes have been tightened. |
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| Check fuel system for leaks. |
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