J MODEL FUEL SENDERS IN A F MODEL ?

[DCarlton]

Does anyone have any suggestions or evidence that could support installing J model senders in an F model Mooney?  I have four overhauled J model senders in a box ready for installation.  Is there a process that could support this change?  The J senders were a significant improvement but form, fit and function should be the same.  If you know of any shops in SOCAL that would do the work, that could be helpful too.  Thanks.  

[M20F-1968]

The J model Rochester senders are a direct and legal exchange.  I also have three rebuilt senders that have not been installed since the rebuild if you would like them as back-ups which is recommended as they do fail.

John Breda

Cell (617) 877-0025

[DCarlton]

4 hours ago, M20F-1968 said:

The J model Rochester senders are a direct and legal exchange.  I also have three rebuilt senders that have not been installed since the rebuild if you would like them as back-ups which is recommended as they do fail.

John Breda

Cell (617) 877-0025

It seems like a no brainer to me; form, fit and function are the same.  Folks are cautious these days.  Any idea how to support the fact that these are a "legal" exchange?  You'd think an IA could do it as a minor alternation.  So far I've asked, Griggs and Air Parts of Lockhaven.  It'll be a bummer if I have to have my old F senders overhauled.  I may end up with four J senders that haven't been installed.  I'm thinking about calling a West Coast MSC to see if they will do it.  

[M20F-1968]

21 hours ago, DCarlton said:

It seems like a no brainer to me; form, fit and function are the same.  Folks are cautious these days.  Any idea how to support the fact that these are a "legal" exchange?  You'd think an IA could do it as a minor alternation.  So far I've asked, Griggs and Air Parts of Lockhaven.  It'll be a bummer if I have to have my old F senders overhauled.  I may end up with four J senders that haven't been installed.  I'm thinking about calling a West Coast MSC to see if they will do it.  

It is not as complicated as you think.  The late model J's had the Rochester senders installed.  There may be a Mooney retrofit number.  I had the J model Rochester senders in my airplane from the time of its rebuild.  Everyone thinks that one needs to adhere to the original part numbers, but this is not true if the factory itself updated parts in later models of your plane.  Find a mechanic who is experienced and he will advise you correctly.  There are several Mooney shops in CA you might ask.  This question can also be the subject of a phone call to shops like Don Maxwell, Top Gun, Lasar, Dugosh, etc...  Don't overthink this one.  As I recall, the exchange need not be anything more than a logbook entry.

You should also pick up the three remaining rebuilt senders I have as they do fail and you will have a replacement on hand when you need them.  The prices have gone crazy and I can sell them quite reasonably.  I had them as back-ups as well but changed to CIES senders.

John Breda

Cell (617) 877-0025

[DCarlton]

On 8/18/2024 at 7:53 AM, M20F-1968 said:

It is not as complicated as you think.  The late model J's had the Rochester senders installed.  There may be a Mooney retrofit number.  I had the J model Rochester senders in my airplane from the time of its rebuild.  Everyone thinks that one needs to adhere to the original part numbers, but this is not true if the factory itself updated parts in later models of your plane.  Find a mechanic who is experienced and he will advise you correctly.  There are several Mooney shops in CA you might ask.  This question can also be the subject of a phone call to shops like Don Maxwell, Top Gun, Lasar, Dugosh, etc...  Don't overthink this one.  As I recall, the exchange need not be anything more than a logbook entry.

You should also pick up the three remaining rebuilt senders I have as they do fail and you will have a replacement on hand when you need them.  The prices have gone crazy and I can sell them quite reasonably.  I had them as back-ups as well but changed to CIES senders.

John Breda

Cell (617) 877-0025

I received the following today from Frank Crawford at Mooney.  This should be sufficient to support the swap.  Go Mooney!    

1.       Original 610161 LH Outboard is now 610243-003 (same as the M20J)

2.        Original 610160 RH Outboard is now 610243-001 (same as the M20J)

3.       Original 610168-001 both inboard is now 610242-001 (same as the M20J)