From crack or edge begin to hit ,big and hard rock is easy to
be crushed.
g) Operate quartering hammer with proper engine speed
Operate quartering hammer with proper engine speed, high
engine speed not only not improve hitting power of
quartering hammer, but also make high oil temperature to
damage piston and valve.
h）Do not operate quartering hammer in the water or mud
When parts except drill shank sink in the water or mud,
please stop operating quartering hammer, because piston and
related parts will have mud and make quartering hammer be
damaged beforehand.
i）Do not hit the rock with falling part of quartering hammer
Hit the rock with falling part of quatering hammer that will
cause counter-acting force to quatering hammer and the
loaded mechaninery, thus, damage the hammer parts and the
machine.
j) Do not hit on the limit position of loaded machine cylinder
When hit on the limit position of loaded machine
cylinder(machine boom completely stretched or shortened),
arm and every part of loaded machine will be damaged.
k） Do not use quartering hammer lift objects
Lift object on quartering hammer or drill shank, it will not
only damaged quartering hammer but also very dangerous.
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