repair part change of purchased interchangeable item
repair part change of purchased interchangeable item
(OP)
Hi,
We have changed the supplier of an item maintaining interchangeability thus we have not changed p/n.
Now we want to supply to our customers some repair parts of the purchased item but they differ from the old and the new supplier.
We will keep the old supplier just for the repair parts. We have changed the p/n of products that use the "new" item but I am unsure whether we should change the p/n of the item itself.
I guess we should change the p/n but my collegues say that it is not necessary since just the BOMs of repair parts are changing and not those used for manufacturing.
I have read ASME Y14.100 but still have some doubts.
What would you suggest?
Thanks
AleX
We have changed the supplier of an item maintaining interchangeability thus we have not changed p/n.
Now we want to supply to our customers some repair parts of the purchased item but they differ from the old and the new supplier.
We will keep the old supplier just for the repair parts. We have changed the p/n of products that use the "new" item but I am unsure whether we should change the p/n of the item itself.
I guess we should change the p/n but my collegues say that it is not necessary since just the BOMs of repair parts are changing and not those used for manufacturing.
I have read ASME Y14.100 but still have some doubts.
What would you suggest?
Thanks
AleX
RE: repair part change of purchased interchangeable item
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RE: repair part change of purchased interchangeable item
Mike
RE: repair part change of purchased interchangeable item
ASME y14.100 gives more detail but in essence, if the part is completely interchangeable, and there is not need to track the differences then it can be the same PN.
Differences may be to do with traceability or other paperwork rather than more obvious physical differences.
I'm not quite clear whats going on from the OP. The 'repair parts' are different - how so?
What do yo mean by 'repair parts'? Are these replacement parts being sent out to repair items in the field? Or are they actually refurbished parts?
It's sometimes necessary to track refurbished parts, such as if they may be expected to have a lower life or something, and in such cases they may require a separate PN.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: repair part change of purchased interchangeable item
We used to buy a standardized electric motor from supplier X to be used in our electric pumps. We have changed to supplier Y.
Now we want to supply to our customers the replacement parts of the motor.
The problem is that these parts differ from supplier X to Y. We have changed the configuration of the pump in order to identify the right parts but I have some doubts about changing the p/n of the motor itself.
As per ASME Y14.100-2004 I had read paragraph 6.8.1 but now have found a different wording on appendix D.
Any thoughts?
RE: repair part change of purchased interchangeable item
The overall motor is interchangeable for your purposes, but repair components of the motor are not.
In this case I'd say you need to be able to differentiate between the 2 motors because of the repair part implications.
To some extent you've already achieved this by changing the designation of the assy's where the motors get used. What I don't see is how you can confirm this configuration if the motor has the same PN.
I'm tempted to err on the side of caution then and assign a different PN for the motor to help traceability. With hindsight this perhaps should have been done when the change was made originally all it now seems a potential mess whatever you do.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: repair part change of purchased interchangeable item
If a customer needs to replace a part of the motor, you would need to either have very good records of what motor is in a particular unit, or have the customer (or a service rep) determine what motor he has. You may have customers with some of each and he may not know that he is asking for the wrong replacement part.
I would recommend you change the part number of the new motor now. There will still be units in the field using a motor part number that has two versions, but you would not be adding to the problem. The new motor part would be the replacement for the old motor part when replaced as a whole. Am I correct in thinking that in the past you replaced the motor as a whole instead of supplying component parts of the motor?
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: repair part change of purchased interchangeable item
You are right, in the past we replaced the motor as a whole, we did not supply component parts of the motor.
Thank you for your insights