(2) Before starting the drilling rig, check whether the charging pressure of the accumulator is normal; Check whether the scouring water pressure and the lubricating air pressure can be; Check whether there is sufficient lubricating oil in the lubricator, and whether the oil supply is appropriate; Check the reverse tendency of the oil pump motor.
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They are typically inserted into pre-drilled holes in the masonry, ensuring a snug fit to prevent any movement They are typically inserted into pre-drilled holes in the masonry, ensuring a snug fit to prevent any movement
The corresponding angle of twist is read off a calibrated scale on the wrench The corresponding angle of twist is read off a calibrated scale on the wrench
