OPERATION - Page 23© 2005 SANDVIK TAMROCK CORP.
OperationS 83 STD
10. Do not strike in one spot for more than 15 seconds at a time. If the object does
not break, or if the tool does not penetrate, stop the hammer and change the po-
sition of the tool. Working too long in one spot will create stone dust under the
tool. Dust dampens the impact effect and produces heat.
11. Do not let the tool move outwards from the hammer when it penetrates. Keep
the down-pressure on the hammer while breaking.
12. To use the hammer most efficiently when breaking big boulders, concentrate on
small steps from the outer edge towards the middle.
13. When breaking hard or frozen ground, use the benching method. Start with
clearing a small area from the edge. Then continue by breaking material to-
wards the open area.
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