I figured it would happen sooner or later,a limb rose up inside my back tire rim & broke off the threaded brass stem(too soft a metal for this purpose). I lost a few gal. of fluid but did catch it in time to roll the stem on top.
If this happens to you a new part is about $15 & a few days to find one maybe. I fixed mine a different way without taking the tire off. I had enough stem sticking out to rethread the hollow tube & threaded a special stem back in place. My warning to those who might drive thru brush or over large limbs on the ground,weld a steel cup over these fragile stems on both rear rims(my fronts have this feature)
treesawer
If this happens to you a new part is about $15 & a few days to find one maybe. I fixed mine a different way without taking the tire off. I had enough stem sticking out to rethread the hollow tube & threaded a special stem back in place. My warning to those who might drive thru brush or over large limbs on the ground,weld a steel cup over these fragile stems on both rear rims(my fronts have this feature)
treesawer