Replacement parts/kits spanning from multiple levels of the BOM
Replacement parts/kits spanning from multiple levels of the BOM
(OP)
I am trying to integrate the management of replacement parts in accordance with configuration management practices and Windchill.
We have replacement kits having parts from multiple levels of the BOM.
My consultant wants to insert these kits at the first level of the BOM of the end product. Anyway, It would be difficult to check if a part of a sub-assembly is also in a replacement kit/replacement assembly. Even if I introduced a service bom, these conditions must be taken into account when evaluating part number changes in the engineering bom.
Indeed, If an assembly contains a replacement part which is changed so that it is no longer interchangeable with its previous version it shall be assigned a new pin. A new PIN shall also be assigned to the next higher assembly for the changed repair part and to all subsequent higher assemblies up to and including the level at which interchangeability is re-established and there are not higher assemblies which are used as replacement parts (otherwise the customer should rely not only on the version of the product on the name plate but also on the p/n of the sub-assemblies)
I would also like to be able to have the same PIN being a replacement item only for some end products targeted to professional users. This leads to add all these items to the first level of the bom of the end product and identified as replacement items.
Have you got any suggestions/opinons as how to manage replacement parts efficiently?
We have replacement kits having parts from multiple levels of the BOM.
My consultant wants to insert these kits at the first level of the BOM of the end product. Anyway, It would be difficult to check if a part of a sub-assembly is also in a replacement kit/replacement assembly. Even if I introduced a service bom, these conditions must be taken into account when evaluating part number changes in the engineering bom.
Indeed, If an assembly contains a replacement part which is changed so that it is no longer interchangeable with its previous version it shall be assigned a new pin. A new PIN shall also be assigned to the next higher assembly for the changed repair part and to all subsequent higher assemblies up to and including the level at which interchangeability is re-established and there are not higher assemblies which are used as replacement parts (otherwise the customer should rely not only on the version of the product on the name plate but also on the p/n of the sub-assemblies)
I would also like to be able to have the same PIN being a replacement item only for some end products targeted to professional users. This leads to add all these items to the first level of the bom of the end product and identified as replacement items.
Have you got any suggestions/opinons as how to manage replacement parts efficiently?





RE: Replacement parts/kits spanning from multiple levels of the BOM
I have always ended up creating new part numbers for spare parts because of accounting issues. THe cost structure for a spare part is typically different than the part that's used in the product. Spare parts are ususally marked-up, they're on a different side of the ledger etc. If the product part is 12345, I would do something like call the spare part 12345S.
RE: Replacement parts/kits spanning from multiple levels of the BOM
The problem is that I do not understand how Service parts affect part number changes. :(( Any kind (and enlightened) soul?
RE: Replacement parts/kits spanning from multiple levels of the BOM
So get to a level where a complete assembly is interchangeable.
If the end product is not interchangeable then the pn change goes that far.
It's all about getting to a point in the structure where the change is 'invisible'.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Replacement parts/kits spanning from multiple levels of the BOM
The part number describe only the item, so, why if the assembly is still interchangeable, should I bother to change its part number because it contains new spare parts which are not interchangeable?
In any case I should account for them in the end-product configuration.
RE: Replacement parts/kits spanning from multiple levels of the BOM
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Replacement parts/kits spanning from multiple levels of the BOM