What are steps to reassemble a Marble tang sight ...

[John Boy]

Windage knob & tiny ball bearings are somewhere at the range ... ordered the maintenance kit parts.
What are the steps to reassemble the tang sight?

[John Boy]

Reply from Marble Arms:


Install the set screw into the windage knob.
Place the windage knob on a thin towel or rag. This is in case if you drop the ball bearing they did not bounce and lose them.
You then put the 2 springs in the windage knob. Then set the ball bearing on the springs.
Having the whole tang sight in hand, press the tang sight onto the windage knob. Be sure to align the flat on the windage screw with the set screw in windage knob. The set screw must be sitted on the flat. If you do not have a flat, then it does not matter where the set screw aligns.
Push the two together. Pick the sight up and hold with one hand so you can tighten down set screw.
Using the allen wrench, tighten the set screw having about .005" gap between windage knob and the sight base. This is about the thickness of a piece of paper.
Test the windage knob. Sometimes you may have to increase or decrease the gap to get a good click.
Loctite can be used only on the set screwand not into the windage set screw hole. But, if it gets into the windage knob springs and ball bearing, windage knob will not work correctly.
If you do not use Loctite, oil the sight in all moving parts with a good gun oil.
If you used Loctite, then wait for 24 hrs before oiling the sight or using the sight.

Troy Bernson
Supervisor and Gunsmith
Marble Arms