What the side bolts do
The guide describes side bolts securing the assembled rock drill components while carrying impact loads from vibration. Its examples associate bolt damage with factors such as prolonged operation without checking tightness, corroded threads and contamination between the bolt and nut.
What to document
Record looseness, visible cracks or severe corrosion, and the condition of threads and adjacent nuts. The guide notes that corrosion or contamination can affect thread engagement and effective clamping. If a problem is found, have a technician inspect and address it according to the manufacturer's procedure.
Tightening sequence, torque, inspection interval and replacement requirements vary by machine; do not apply another model's values to the equipment at hand.
Prepare a fastener request
Provide the full machine model and version, side bolt or nut part number, quantity, and photos of the old component and installation position. Length, thread and end details can assist matching; similar dimensions alone do not establish compatibility.
Source: GLOBMACH Hydraulic Rock Drill Parts Selection Guide, printed page 111.