Inboard Fuel Float

[Bob - S50]

Here's a question for you maintenance experts, or those with highly skilled hangar fairies:

On older Mooneys, that is, J or older, apparently some or all of them have an inboard fuel float that looks like the attached picture.  It has a bend in the float arm to go around a vertical tube inside the wing.  Apparently on K models and later they either moved the tube or removed it so their floats use a straight arm.

Does anybody know if all J and older have this?

Did they change it on some J's and older so they use a straight float?

If so, any idea how to tell based on serial number?

I already wrote to LASAR but they did not respond.

Thanks

[bonal]

LASAR has been closed for the holidays December 24 through New Years  and will be open tomorrow 

[tankman]

This is actually the outboard sender. It is used on the J and the F models. The previous models C and E did not have an outboard sender. The tube in the picture is the overflow tube. Just a note, the sealer is missing on the nut plates on the sender mounting ring.

[N201MKTurbo]

My old F had floats that were just a straight wire going to the float. My J has the floats pictured. The tanks were the same inside. I don't know when they changed.

[N201MKTurbo]

That tank is missing a lot of sealant.

[Bob - S50]

11 hours ago, tankman said:

This is actually the outboard sender. It is used on the J and the F models. The previous models C and E did not have an outboard sender. The tube in the picture is the overflow tube. Just a note, the sealer is missing on the nut plates on the sender mounting ring.

Ahhh.  Outboard not inboard.  That I can take a picture of with my smartphone!  I've asked our mechanic to use his borescope equipment to peak past the wing rib (through a lightening hole) to take a look at the inboard float.  Next time up there I'll look at the outboard float.

Thanks.

Bob