Repair by replacing parts in old generating sets is not manufacture; related Modvat credit must be reversed on remand.

Repair of old diesel generating sets by replacing the engine or alternator was treated as a non-manufacturing activity because the same goods were returned after rectification and no new and distinct product emerged. On that basis, Modvat credit on inputs used exclusively for the repair work was held not to remain admissible and was required to be reversed. The commentary also states that the credit issue could be examined in remand proceedings linked to reassessment of duty, and the contrary objection that this would go beyond the show cause notice did not prevail.

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Issues: (i) Whether replacing the engine and/or alternator in old diesel generating sets amounts to manufacture; (ii) whether Modvat credit taken on inputs used in such repair activity must be reversed and can be examined in remand proceedings.

Issue (i): Whether replacing the engine and/or alternator in old diesel generating sets amounts to manufacture.

Analysis: The repair activity consisted of replacing worn or damaged parts in diesel generating sets received back for repair and reconditioning. The legal distinction applied was between manufacture and repair: where the same goods are returned after rectification or replacement of parts, and no new and distinct product emerges, the activity does not amount to manufacture. The later Supreme Court authority cited by the Revenue was distinguished on facts because it dealt with the making of stators and not merely replacement of parts in an existing generating set.

Conclusion: The activity of replacing the engine and/or alternator in the old diesel generating sets does not amount to manufacture and is in favour of the assessee.

Issue (ii): Whether Modvat credit taken on inputs used in such repair activity must be reversed and can be examined in remand proceedings.

Analysis: Once the repaired goods were held not to be dutiable as manufactured goods, the credit taken on inputs used for that repair could not remain available if the inputs were not used in the manufacture of dutiable final products. The majority also held that the availability and reversal of credit were linked to the reassessment of duty in the reopened proceedings and could be examined by the original authority on remand. The contrary view that this would amount to making a new case beyond the show cause notice did not prevail.

Conclusion: Modvat credit on inputs used in the repair activity is required to be reversed and the question may be determined in remand proceedings, against the assessee.

Final Conclusion: The repair activity was held not to be manufacture, but the matter was sent back for quantification of duty and penalty after directing reversal of the related Modvat credit.

Ratio Decidendi: Repair of an existing excisable article by replacement of parts does not amount to manufacture unless a new and distinct product emerges; where such repair is held non-manufacturing, credit on inputs used exclusively for that activity is not admissible and may be examined in remand proceedings tied to the reassessment of duty.

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