Pressure indicator for hydraulic hammer

A hydraulic hammer, comprising:

• a housing member;
• and
• a power cell disposed within the housing member, the power cell comprising an accumulator for storing a gas, the accumulator comprising a pressure indicator configured to provide a visual indication of a pressure of the gas within the accumulator, the pressure indicator comprising:
• a sleeve member configured to couple to an opening defined in a wall housing of the accumulator;
• a plunger slidably disposed within the sleeve member and movable between a first position and a second position with respect to the sleeve member, the plunger comprising:
• a first end disposed outside the wall housing of the accumulator;
• and
• a flange coupled to a second end, wherein the second end is distal to the first end, and disposed inside the wall housing of the accumulator;
• and
• an elastic member inserted over the plunger and disposed between the wall housing and the flange,
• wherein the plunger is moveable between the first position and the second position relative to the sleeve member against a biasing force of the elastic member based on the pressure of the gas within the accumulator, and wherein a position of the first end of the plunger with reference to an outer end of the sleeve member provides a visual indication indicative of the pressure of the gas within the accumulator, and
• wherein the plunger comprises a stopping member disposed adjacent to the first end thereof, the stopping member configured to engage with a step portion defined at an inner surface of the sleeve member at the first position of the plunger.