LIST

855 621 8 LIST is typically a bushing you'll find in a critical pivot point, maybe on a boom cylinder mount or within the feed frame linkage. Its primary job is to act as a sacrificial wear surface, letting two metal components articulate smoothly without grinding directly against each other. It keeps things aligned, takes the load, and ultimately saves the more expensive pins and housing bores from getting chewed up by constant movement and friction.

When this bushing starts to wear out, you’ll usually notice some extra slop or play in the joint. That might manifest as a slight drift in the boom position, or you could hear a distinct clunking sound when the rig moves or during operation, especially under load. This added movement isn't just annoying; it puts undue stress on everything else in the assembly – the pins, the seals, even the hydraulic cylinders themselves can start to bind up or leak prematurely because of the misalignment. It’s a slow killer for other components if you don’t catch it early.

Swapping one of these out isn't usually a massive undertaking, but paying attention to the details is key. When you've got the old one out, always give the pin and the housing bore a good inspection for wear; sometimes the pin is just as bad, or even worse, and needs replacing too. And here’s the kicker: don't forget to properly grease the new bushing before you put it back together. A dry bushing, even a brand new one, won't last long at all, so a little extra attention during assembly really makes a difference.