MAINTENANCE JIG FOR BALANCER OF ROBOT

A maintenance jig for a balancer of a robot is provided. When a decelerator is at fault and locked, the balancer can be easily disassembled on the position where the robot stops, moreover, the robot can be returned to a normal assembly posture, and the decelerator can be easily assembled. The balancer includes a casing closed at both ends by two end plates each having a through hole, a movable member disposed in the casing to be movable in an axial direction of the casing, a rod, one end of which is fixed to the movable member, and another end of which is disposed outside the casing, and a force generating member accommodated in the casing and generates a pulling force that pulls the rod into the casing. The maintenance jig includes a first member detachably fixed to the other end plate, and a second member includes a male screw portion to be fastened to a screw hole of the first member, and a rotational force input unit through which a rotational force is input. The front end of the second member is abutted