TUBO, OUTER

BG 011 224 77A TUBO, OUTER this is the main barrel, essentially, of whatever cilindro it belongs to on the rig. It's the big alojamiento that holds everything else in place – the pistón, the rod, the reténs – and it's what gives the cilindro its stroke. Think of it as the backbone; it has to be straight and smooth on the inside for the pistón to glide properly and for the reténs to do their job holding pressure. If this thing is bent or scored, you're going to have issues.

When this TUBO, OUTER starts getting worn or damaged, you'll usually notice it first with hydraulic leaks, especially if the internal surface gets scored or pitted. The reténs just can't hold against a rough surface anymore, and you'll see oil weeping or even streaming out. Sometimes, if it's really bad, or if the tubo itself gets distorted, you might get sluggish cilindro movement or even binding, because the pistón can't move freely inside. I've seen situations where a bent tubo caused the rod to snap eventually due to side loading, which is a real headache to fix out in the field.

Reemplazar uno de estos no es un trabajo rápido, así que quieres asegurarte de que es en realidad el problema antes de derribar todo. Siempre revisa la varilla y el pistón por el daño también, porque a menudo si el tubo es malo, también han recibido una paliza. Cuando lo estés armando todo, presta mucha atención a la instalación de sellos – un pequeño nick en un sello durante el montaje puede llevar a una fuga inmediata, y luego estás haciendo el trabajo dos veces. No te olvides de sangrar correctamente el cilindro una vez que esté instalado; el aire en el sistema te dará todo tipo de dolores de cabeza.