Airight fuel selector cross reference?

[Glen S.]

Hi everyone, new Mooney owner here.  I recently purchased a 1978 M20j (sn#24-0482) and it has a very stiff fuel selector.  My mechanic spoke to Laser and believes it is not serviceable.  Instead he suggested looking for a 610289-003 selector which appears to be on the later serial numbers.  In lookin for them online I have seen references to the Airight part number (e.g. 36100-5) and not sure what the equivalent would be for the Mooney part number 610289-003.  Is there a table somewhere that I can reference?

[Fly Boomer]

10 minutes ago, Glen S. said:

Hi everyone, new Mooney owner here.  I recently purchased a 1978 M20j (sn#24-0482) and it has a very stiff fuel selector.  My mechanic spoke to Laser and believes it is not serviceable.  Instead he suggested looking for a 610289-003 selector which appears to be on the later serial numbers.  In lookin for them online I have seen references to the Airight part number (e.g. 36100-5) and not sure what the equivalent would be for the Mooney part number 610289-003.  Is there a table somewhere that I can reference?

Welcome to MooneySpace, and congrats on your Mooney.  We have a lot of knowledgeable people here, and someone should be along shortly to help.

[Skyland]

The fuel selector in my 1979 J also was very stiff.  Mine is an Anderson Brass unit located in the center of the floor just aft of the center console.  The parts manual says serial numbers 24-0378 to 24-1176 could be Airight or Anderson Brass.  That's in the 78-79 time frame. 

It was an easy fix.  If the Airight is similarly constructed maybe it can be serviced as follows.  Lower the fuel levels (of course) then unscrew the selector nut that surrounds the shaft.  Lift the selector nut over the shaft along with a spring that applies downward pressure to the diverter cone.  Lift the one piece selector shaft and conical diverter cone out of the fuel selector body.  Apply a VERY thin coating of EZ Turn Lube (Aircraft Spruce) to the cone and reassemble using new orings.  MS9388-016 (1/16x5/8x3/4) for the nut and M83248-1-011 (1/16x5/16x7/16) for the shaft.  Use oring lube on the rings, not EZ Lube.  All this can be performed from inside the cabin without removing the fuel selector body or fuel lines.  Hope this helps.

Edited January 16, 2024 by Skyland
Corrected part numbers

[Glen S.]

Thanks so much Skyland that seems to be simpler than I feared.  Now to determine which one it is…so much to learn!