Have the neck off ready for a reset? Truss rod broken? Need to replace the truss rod?
The truss rod slot is open and accessible under the fret board extension when the neck is off the guitar.
Harmony Sovereign truss rods are fairly easy to remove and easy to replace with another Harmony rod.
The image below shows the perfect tool for removing the Harmony Sovereign truss rod. Use this tool to tap the truss rod out the gear head end of the slot. This is not an easy operation because sometimes the compression rod is glued into the slot against the fret board bottom surface. So this may require considerable tapping. A small (6-8 oz.) dead blow hammer is nice to have.
Be gentle with the compression washer. It does not want to come out while the rod is in place. This is to say, push the compression washer out into the gear head about 3/8 inch, then push the rod back into the neck before attempting to remove the compression washer. You will have to work the assembly back and forth several times.
So, what is it? This is the drain raising and lowering rod from a bathroom sink. These are available at any hardware store or home center.
©2017 D.R. Hanna