ABB RHD Series - Page 17

RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/RHD250/4000-EN REV. A 17
1
Brake body
2
Brake disk
Figure 23: Brake body removal (motor series 1)
8. Take brake body
1 apart.
1
Brake disk
2
Brake disk pinion
1
Brake body
2
Brake disk
Figure 24: Brake disk removal (motor series 1)
9. Take brake disk
1 apart.
10. Remove retaining ring from brake disk pinion
2 and pull the
pinion from the shaft (see Figure 15 on page 15)
11. See Brake adjustment on page 19.
1
Pinion screw
2
Pinion
3
Removal tool
Figure 25: Pinion removal
12. Undo pinion screw 1; use appropriate retainer to secure the
screw when re-assembling (DELO-ML 5228 or LOCTITE 243;
both medium-firm; detachable)
13. Use appropriate removal tool
3 to pull the pinion 2 from
the shaft.
14. Do not damage the threaded center hole
1
Key hole
2
Key
3
Front flange
4
Motor housing
Figure 26: Remove the key
15. Remove the key
2; note the key position (key hole 1)
before you take it out of the shaft groove
16. Pull front flange
3 with motor shaft out of the motor
housing
4.
1
Spring washer
Figure 27: Pinion removal
17. Remove bearing support washer (spring washer
1); take
care to place it properly when re-assembling the motor.