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Inspection of charge pressure
1. Install the adapter (2) and pressure gauge (5) to the three-way valve (4). (Make sure that the
O-rings (6) and (7) are installed in the adapter (2).)
2. Tighten the cap and relief valve installed in the three-way valve (4).
3. Remove the cap (10) from the accumulator and tighten the valve (9) completely.
4. Remove the plug (8) and screw the adapter (2) installed in the three-way valve (4).
5. Loosen the valve (9) slowly, and the charge pressure is indicated on the pressure gauge. (As
soon as the pointer of the gauge moves, stop loosening.) When the charge pressure is high,
loosen the relief valve and tighten it immediately. By repeating this action, pressure is slowly
lowered.
NOTICE
If the hydraulic breaker is already warmed, check the pressure with the hydraulic oil
temperature gauge regardless of the ambient temperature.
6. After checking the charge pressure, tighten the valve (9) completely.
7. Loosen the relief valve and discharge the N2 gas from the three-way valve (4).
8. Remove the three-way valve (4) and tighten the plug (8) and cap (10). (Make sure that the O-
rings (11) are installed on the plug (8) and cap (10).)
NOTICE
Check to see if gas is leaking from the valve. (Soapy water is optimal for inspection.)
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