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Operator's instructions
7. Drilling
Checks during drilling
Monitor drilling performance and pay particular attention to the points below:
Should anything out of the ordinary occur, stop drilling and clear up the trouble or
ask service personnel to investigate.
1. Rock drill :
• Abnormal percussion hose vibration.
- Check the pressure in the rock drill accumulators.
• Check that the shank adapter is sufficiently lubricated.
- Lubricating oil/air should leak out at the shank adapter.
• Abnormal leakage from the rock drill.
• Note that the shank adapter has a "float position", i.e. it is pressed out about 4-
6 mm from the frame.
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