Removal and installation device for external and internal snap rings

A removal and installation device for external and internal snap ring, comprising:

• a pair of levers having pivot portions operating levers and gripping levers, which extend from the pivot portions in directions opposite to one another,
• a pair of beaks detachably fit to extremities of the operating levers and provided with working tools at their foremost ends,
• a switching mechanism supporting the pivot portions of the levers in mutually overlying relation to allow any one of the pivot portions to move with respect to the other between a shaft mode position and a hole mode position, and
• a spring to urge the gripping levers to get spaced away from one another,
• whereby the switching mechanism provides a shaft mode where the working tools are allowed to move away from one another in opposite directions when the gripping levers are squeezed towards each other and a hole mode where the working tools are allowed to get closer when the gripping portions are squeezed towards each other, and further
• wherein the switching mechanism includes a rotary plate mounted to any one of the pivot portions for eccentric turning and a shaft part raised integrally above the rotary plate to fit loosely in a circular hole formed in the other of the pivot portions, so that the eccentric turning of the shaft part integral with the rotary plate makes the other pivot portion transfer between the shaft mode position where the levers are supported with the pivot portions in a substantial V-shape merging at the shaft part with the working tools lying in parallel with each other and the hole mode position where the levers are supported in a substantial X-shape crossing at the shaft part.