YASKAWA MOTOMAN-PH130F Maintenance Manual

Contents

10 Disassembly and Reassembly of Balancer Unit10.2 Disassembly and Reassembly of Balancer Unit10-3HW1485471HW14854716. Remove the hexagon socket head cap screws and mount 2 fullythreaded screws M8 for removal on the B-cover . Then remove theB-cover and shim .7. Only when replacing the balancer unit: remove the O-ring .8. Remove the hexagon socket head cap screws and mount 2 fullythreaded screws M6 for removal on the shaft assembly (support part1) . Then remove the shaft assembly (support part 1) and theouter ring of the tapered roller bearing .9. Remove the hexagon socket head cap screws and mount 2 fullythreaded screws M8 for removal on the B-cover . Then remove theB-cover .10. Only when replacing the balancer unit: remove the O-ring .11. Remove the hexagon socket head cap screws and mount 2 fullythreaded screws M6 for removal on the shaft assembly (support part2) . Then remove the shaft assembly (support part 2) and theouter ring of the tapered roller bearing .12. Put the balancer unit assembly down next to the manipulator.13. Only when replacing the balancer unit: unscrew the spring fixing boltsmounted on the rear of the balancer unit assembly .14. Only when replacing the balancer unit: remove the oil seals andfrom the S-head. Reassembly1. Only when replacing the balancer unit: assemble the unit assembly.Refer to chapter 10.3 “Unit Assembly” .2. Remove the old sealing bond adhering on the S-head, the B-coverand .3. Only when replacing the balancer unit: mount the oil seals andon the S-head. (Apply Alvania EP Grease 2 on the lip parts of the oilseals.)4. Lift up the balancer unit assembly , then put it down on its mountingposition.5. Apply sealing bond ThreeBond 1206C to the contact surface of theshaft assembly (support part 2) and the balancer unit .6. Mount the shaft assembly (support part 2) on the balancer unitassembly .7. Apply sealing bond ThreeBond 1206C on the thread parts of thehexagon socket head cap screws and tighten them with thetightening torque shown in table 10-1 “Balancer Unit Parts Checklist” .8. Insert the outer ring of the tapered roller bearing on the S-head.9. Only when replacing the balancer unit: mount the O-ring on the B-cover .10. Mount the B-cover on the S-head. (Be careful that the O-ring doesnot get caught between the parts.)788 910113 31213141415164 4171118 19NOTE Refer to chapter 5.2 “Removing, Applying, Assembling ofSealing Bond” .81418 1914 1411617151414105/134