The present invention relates to a jig to dismantle a device. According to the present invention, the jig has a simple structure in which a fixated ring member is fixated to a device assembly with a position pin as a medium not to be rotated, a rotating ring member having a handle lifts a horizontal rod member connected to the device with a plurality of fixation bolts as a medium and, at the same time, horizontal balance is automatically maintained while smoothly ascending in a spiral direction along the outer circumferential surface of the fixated ring member; thus being able to easily and safely dismantle the device with a small force, remarkably reduce a dismantling time, prevent a surface of the device assembly from being scarred or scratched, and also prevent the device from being cracked or pressed due to a collision likely to occur when the center of gravity is shaken as the device is dismantled (separated) from the insertion hole of the device assembly to an upper part. According to the present invention, the jig comprises the fixated ring member, the rotating ring member, the horizontal rod member, and the fixation bolts.
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