1) Install the hammer on the excavator and after tool greasing operate the hammer for about one
minute to uniformly distribute the grease inside the tool cavity.
GB
2) Lengthen excavator boom for about 2/3 of the maximum sbraccio then lean the breaker
vertically on earth with the boom weight resting on it: with optimal pressure this weight wins
the push of the gas and the tool for some centimeters till its stroke-end stop.
3) If the tool too quickly in the hammer increase gas pressure and repeat the procedure.
4) Otherwise discharge little by little the gas through till reaching the optimal pressure.
5) Screw N2 valve plug to 12,5 Kgm tightening torque.
6) The hydraulic hoses under pressure can have stinging movements if the screws become loose
or come loose. The hydraulic hoses can make a "whiplash" and cause serious injury.
7) Always clean the couplings before mounting or dismounting. Always close the pipes and
fittings with end caps tight and clean when you run the disassembly.
STARTING TROUBLES
It is essential decrease gas charge on some excavators with variable oil delivery pumps that
regulate at relatively low pressure, to reduce starting oil pressure of the hammer and the pump
doesn't regulate . This procedure allows to use breaker on excavators with low oil delivery.
Reverse procedure (increasing of N2 charge) reduce flow on carriers with high oil delivery.
Tab following shows medium values for the N2 charge.
S
65
15 bar
S
85
20 bar
S
130
30 bar
S
170
20 bar
S
230
25 bar
S
330
25 bar
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