Essential character test classifies mobile cementing unit as pumping machinery, not a special-purpose motor vehicle.

A mobile cementing unit mounted on a truck chassis was classified by applying HSN Explanatory Notes and the essential character test. Heading 87.05 covers specially constructed motor vehicles for non-transport functions, but excludes self-propelled wheeled machines where the chassis and working machine form an integral mechanical unit, as well as mounted machines falling under the heading of the principal machine. As the chassis was specially integrated with the cementing equipment and the revenue did not rebut that position, the unit was treated as a composite machine whose essential character came from the pumping function. It was therefore classified under Heading 84.13 and not Heading 87.05.

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Issues: Whether the mobile cementing unit mounted on a truck chassis was classifiable under Heading 84.13 or under Heading 87.05 of the Central Excise Tariff Act, 1985.

Analysis: The product consisted of a cementing machine mounted on a truck chassis and was meant for cementing operations in oil exploration. The relevant HSN Explanatory Notes showed that Heading 87.05 covered specially constructed motor vehicles for non-transport functions, but excluded self-propelled wheeled machines where the chassis and working machine formed an integral mechanical unit, as well as mounted machines that fall under the heading of the principal machine. The chassis in the present case was shown to be specially integrated with the equipment and the revenue did not rebut that position. Applying the principle that a composite machine is classified according to the component giving it its essential character, the unit was held to answer to the heading of the pumping function rather than to a special purpose motor vehicle.

Conclusion: The mobile cementing unit was classifiable under Heading 84.13 and not under Heading 87.05.

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