5 Disassembly and Reassembly of Motors
5.5 Disassembly and Reassembly of B-Axis Motor
5-11
159281-1CD
HW1480357
HP20D
5.5 Disassembly and Reassembly of B-Axis Motor
• Refer to Fig. 5-5 “Disassembly and Reassembly of B-Axis Motor”.
Disassembly
1. Turn OFF the DX100 power supply.
2. Remove the GT-SA bolts , then remove the covers .
3. Remove the plastic cover on the connector (signal) of the internal
wiring harness connected to the B-axis motor . Then, connect the
backup battery. (Refer to chapter 2 “Notes for Maintenance”.)
4. Remove the plastic cover on the connector (power) of the internal
wiring harness connected to the B-axis motor . Then, disconnect the
connector (signal, power) of the internal wiring harness.
5. Remove the GT-SA bolts , then remove the B-axis motor from the
U-arm.
6. Remove the hexagon socket head cap screw , then remove the
pulley . (Use the holes (2 holes, diameter: 4 mm) on the surface of
the pulley to fix it.)
Reassembly
1. Mount the pulley on the B-axis motor .
2. Apply Loctite 242 to the thread part of the hexagon socket head cap
screw . Then, tighten it with the tightening torque shown in Table 5-5
"B-Axis Motor Parts Checklist". (Use the holes (2 holes, diameter:
4 mm) on the surface of the pulley to fix the it.)
3. Mount the B-axis motor on the U-arm, then put the belt on the
pulley .
4. Then, tighten the GT-SA bolts with the tightening torque shown in
Table 5-5 "B-Axis Motor Parts Checklist".
(Refer to chapter 8 “Disassembly, Reassembly, and Adjustment of B-
and T-axis Timing Belts” to adjust the belt tension.)
5. Connect the connector (signal, power) of the internal wiring harness to
the B-axis motor , and remove the backup battery. Then, put the
plastic cover on the connector.
6. Mount the covers with the GT-SA bolts . (Apply ThreeBond 1206C
on the matching surface between the cover and the U-arm.)
7. Tighten the GT-SA bolts with the tightening torque shown in Table
5-5 "B-Axis Motor Parts Checklist".
8. Turn ON the DX100 power supply.
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