YASKAWA MOTOMAN-MH5F, Maintenance Manual

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6 Disassembly and Reassembly of Speed Reducer
6.5 Disassembly and Reassembly of B-Axis Speed Reducer
6-15
176183-1CD
HW1483638
MH5S (II) /MH5F
6.5 Disassembly and Reassembly of B-Axis Speed Reducer
• Refer to Fig. 6-5 “Disassembly & Reassembly of the B-Axis Speed
Reducer” .
 Disassembly
1. Turn OFF the DX100/DX200/FS100 power supply.
2. Unscrew the hexagon socket button head screws and remove the
cover .
3. Unscrew the GT-SA bolts
-a
which mount the B- and T-axes motor
unit and remove the timing belt . (Refer to section 8.3 “Disassembly
and Reassembly of B- and T-Axis Timing Belts” .)
4. Remove the B- and T-axes motor unit from the U-arm.
5. Unscrew the GT-SA bolts
-c
and remove the T-axis unit with the
removal tap.
6. Unscrew the GT-SA bolts
-b
and remove the U-arm 2 unit.
7. Unscrew the hexagon socket head cap screw and remove the
pulley .
8. Unscrew the hexagon socket head cap screws . With the removal
tap, remove the circular spline , flex spline , wave generator ,
bearing , retaining ring , housing , housing , hexagon socket
head cap screw
s
, bearing , hexagon socket head cap screws
and housing together with the wrist base from the U-arm.
9. Unscrew the hexagon socket head cap screws . With the removal
tap, remove the housing , bearing , retaining ring and wave
generator together.
10. Remove the wave generator and the retaining ring from the
housing . Then remove the bearing .
11. Remove the bearing from the wave generator .
12. Unscrew the hexagon socket head cap screws . With the removal
tap, remove the housing .
13. With the removal tap, remove the flex spline and the housing
from the wrist base.
14. With the removal tap, remove the flex spline from the housing .
15. Remove the circular spline from the wrist base, then the oil seal
and the bearing .
16. Remove old sealing from each parts.
 Reassembly
1. Press fit the bearing into the wrist base. (Apply to MP-1 grease to
the sliding part of the oil seal.)
2. Attach the conical spring washers to the hexagon socket head cap
screws and apply LOCTITE 515 to the thread parts. Also, apply
LOCTITE 515 to the matching faces of the housing , flex spline
and housing . Then tighten them to the wrist base with the tightening
torque shown in Table 6-5 “B-Axis Speed Reducer Parts Checklist” .
3. Press fit the bearing into the housing and attach the retaining
ring . (When replace the speed reducer, replace the bearing ,
retaining ring and oil seal , too.)
11
10
14
5
14
14
7
6
4
1
2 3
19 13 17 18
12
8 9
15
9
15
8
13
3
3
13
15
8
19
3
12
17
2
18
2
18
1
16
20
20
12
18
2
17
8
15
13
8
13 16
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