How do these shut offs work? (I understand the down elevator activation)
For the life of me looking at these pics I am assuming that they pinch the fuel line but cant tell where the movement is. A lesson would be great.
Thanks Mark
The shut-off is comprised of four major components: a body to hold everything together, a plunger that incorporates a U-shaped wire that actually pinches the fuel line, a spring of some sort that applies the pinching force, and a tripwire.
Each of the shut-offs pictured is in the closed position, and neither show a piece of fuel line where it would go. On both, look for the U-shaped wire that goes across the bottom of the body of the shut-off and, in both pictures, is tight against the body: that is where the fuel line will go.
The plunger has a notch in it where the trip wire rests when the plunger is in the "run" position. The second example above shows the notch. When the plunger is in the "run" position (pressed toward the body), the trip wire drops into the slot and holds the plunger in that position. When the trip wire is pulled back (down elevator and appropriate linkage) the spring-loaded plunger jumps back up and the fuel line is pinched off.
Hope that helps.
Bill Lee
Topic: Goodyear shutoffs (Read 1862 times)