YASKAWA MOTOMAN-PH130F - Page 105

10 Disassembly and Reassembly of Balancer Unit
10.2 Disassembly and Reassembly of Balancer Unit
10-3
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6. Remove the hexagon socket head cap screws and mount 2 fully
threaded screws M8 for removal on the B-cover . Then remove the
B-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 fully
threaded screws M6 for removal on the shaft assembly (support part
1) . Then remove the shaft assembly (support part 1) and the
outer ring of the tapered roller bearing .
9. Remove the hexagon socket head cap screws and mount 2 fully
threaded screws M8 for removal on the B-cover . Then remove the
B-cover .
10. Only when replacing the balancer unit: remove the O-ring .
11. Remove the hexagon socket head cap screws and mount 2 fully
threaded screws M6 for removal on the shaft assembly (support part
2) . Then remove the shaft assembly (support part 2) and the
outer 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 bolts
mounted on the rear of the balancer unit assembly .
14. Only when replacing the balancer unit: remove the oil seals and
from the S-head.
 Reassembly
1. 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-cover
and .
3. Only when replacing the balancer unit: mount the oil seals and
on the S-head. (Apply Alvania EP Grease 2 on the lip parts of the oil
seals.)
4. Lift up the balancer unit assembly , then put it down on its mounting
position.
5. Apply sealing bond ThreeBond 1206C to the contact surface of the
shaft assembly (support part 2) and the balancer unit .
6. Mount the shaft assembly (support part 2) on the balancer unit
assembly .
7. Apply sealing bond ThreeBond 1206C on the thread parts of the
hexagon socket head cap screws and tighten them with the
tightening 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 does
not get caught between the parts.)
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NOTE
Refer to chapter 5.2 “Removing, Applying, Assembling of
Sealing Bond” .
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