DUST PIPE

313 313 68B DUST PIPE An adjusting piece serves a simple but critical function: it allows for the fine-tuning of mechanical clearances between moving parts. Most often, you will find it in the drifter's feed cradle assembly, where it's used to set the proper gap between the drifter and the feed beam. This precise setup ensures the drifter travels straight and smoothly, which is fundamental for drilling performance.

When this component wears down, the drifter can develop excessive play on the feed. A practical symptom of this is a chattering noise during feeding or difficulty when starting, or collaring, a new hole. This looseness not only affects drilling accuracy but also causes accelerated wear on more expensive parts like the feed beam and the drifter body itself, leading to costly future repairs.

Check for wear on this part during any major drifter or feed service. If you can physically move the drifter side-to-side on the cradle, the adjusting pieces likely need inspection and replacement. Using the correct, specified part is important for restoring the proper fit and avoiding repeat issues.