Sh.Ganeshan Kalyani Ji,
With due honour, I totally differ on this issue. I know this is an hypothetical query and even then it is very interesting and informative query. Point-wise reply to query is as under:-
1. This falls under the erstwhile category of "Management, Maintenance or Repair Services" specified under erstwhile Section 65 (105)(zzg) of the Finance Act, 1994. This is maintenance. This service is neither eligible for abatement nor Reverse Charge Mechanism. This service cannot be treated as service with material inasmuch as value of the part to be fitted in the machine and labour charges (fitting charges) are known to the Service Provider (and dealer). Both can be bifurcated easily i.e. Sale and service. Service Tax cannot be charged on sale of any part of the machine. Here deduction is allowed in terms of erstwhile Notification No.12/2003-ST dated 20.6.2003 (Now rescinded).Though Notification stands rescinded but value of the machine is excluded, it being sale. In other words, it is a case of 'pure labour' and hence cannot be classified under the category of "Works Contract Service".Hence not eligible for abatement and RCM.
2. This is repair service and also falls under erstwhile category of "Management, Maintenance or Repair Services" specified under erstwhile Section 65 (105)(zzg) of the Finance Act, 1994. Remaining reply is same as at point no.1.
Maintenance is continuance activity and repair is one time activity. At present both activities are covered under the category of ,"Other Than Negative List". Service Receiver will pay ST to the Service Provider and SP would deposit into the Govt. account.
If any assessee classifies both type of services in "Works Contract Service" on the basis of service being provided with material, it will be misclassification and misuse of the benefits provided under abatement and RCM schemes.