| Notes on general repairs on vehicles with auxiliary heaters |
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| Read self-diagnosis of auxiliary heater using vehicle diagnosis, testing and information system -VAS 505X-. |
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| If parts of the fuel system were removed or renewed, ensure that all components for fuel delivery to the auxiliary heater are properly installed. |
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| Mark the coolant hoses for identification purposes to avoid confusion after they have been removed. |
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| Following repair work in the vicinity of the auxiliary heater fuel line, check: |
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| If the fuel lines are routed flush with the vehicle underbody and are protected against mechanical damage. |
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| that the supplementary heater fuel line is protected from heating which might disturb operation. |
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| that the fuel line does not come in contact with parts that become hot. |
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