NPK
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GAS CHARGE
CHECKING THE GAS PRESSURE
Inspect the nitrogen gas pressure every 100 hours.
PROCEDURE
1. The gas pre-charge is measured with no
preload on the tool (HH). Remove the
tool or position the hammer (KK) with the
tool fully extended.
2. Remove the charge valve cap (M1) from
the hammer charge valve (M). Do not
remove the charge valve assembly!
3. Turn the NPK charge adapter T-handle
(g2) to a full counterclockwise position.
4. Install the NPK charge adapter (g1) onto
the hammer charge valve located on the
hammer gas head (L).
5. Tighten the charge adapter cap (g6).
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