h) When using the hammers in these positions, the tool should be removed every 8
hours, and the internal faces of the bush cleaned with a wire brush or lubricant cleaner.
If the hammer is very full of rock particles, remove the appropriate plug from the side
of the chuck housing, and blow out the hammer with compressed air.
i) Do not use the tool of the hammer to rotate the carrier. This causes superficial cuts on
the contact areas which could cause breakage under stress.