YASKAWA MOTOMAN-PH130F Maintenance Manual

Contents

10 Disassembly and Reassembly of Balancer Unit10.1 Notes when Disassembling and Reassembling the Balancer Unit10-1HW1485471HW148547110 Disassembly and Reassembly of Balancer Unit10.1 Notes when Disassembling and Reassembling theBalancer UnitCarefully read and observe the precautions below when disassemblingand reassembling the balancer unit.Fig. 10-1: Notes when Disassembling and Reassembling the BalancerUnitNOTICE• Do not damage the rod part of the balancer unit.• Do not apply any horizontal forces to the rod part.• When lifting the balancer unit, do not attach lifting jigs to the rod partand/or clevis.• Do not use the balancer unit with foreign substances at the rod partor the entry of the rod to the cylinder.Failure to observe this may damage the sealing inside the balancerunit, and this may cause the grease leakage or abnormal noise.DANGER• Be sure to mount the spring fixing bolts when removing the balancerunit from the manipulator. If the balancer is removed without thespring fixing bolts, the rod will rapidly shrink which may result ininjury or accident.• Before removing the balancer unit from the manipulator, confirmthat the L-axis motor brake is appropriately functioning and L-axis isfirmly secured with a chain block, etc., to prevent it from rotating.Failure to observe this instruction may rotate the L-axis and cause ahazardous condition.• Before unscrewing the spring fixing bolts, confirm that the L-axismotor brake is appropriately functioning.Failure to observe this instruction may rotate the L-axis and cause ahazardous condition.NOTE Although the balancer unit position would not deviate whendisassembled and reassembled, refer to chapter 3 “HomePosition Return” before replacement just in case.ClevisRodSpring fixing bolt103/134