4 Repair
4.6.4. Replacement of motor, axis 4
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3HAC022033-001 Revision: E
©
Co
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rig
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4 - 20
08 ABB.
All r
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3. In horizontal position: unload the upper arm
to avoid movement of the axis, with one of
the given methods:
•
move the upper arm to a position
where the turning disk rests against
the foundation (recommended)
•
use a fork lift or an overhead crane
and lifting slings to rest the weight of
the upper arm.
4. In horizontal position: drain the gearbox,
axis 4.
Detailed in section
.
5. Remove the
cable gland cover
at the cable
exit of the motor by unscrewing its two
attachment screws.
.
Make sure the gasket is not damaged!
6. Remove the cover on top of the motor by
unscrewing its four attachment screws.
7. Disconnect all connectors beneath the
motor cover.
8. In order to release the brake, connect the 24
VDC power supply.
Connect to connector R2.MP4
•
+: pin 2
•
-: pin 5
9.
CAUTION!
The motor weighs 22 kg! All lifting
equipment used must be sized accordingly!
10. Unscrew the motors four
attachment screws
and plain washers.
.
11. Fit the two
guide pins
in two of the motor
attachment screw holes.
12. If required, press the motor out of position by
fitting
removal tool, motor
to the motor
attachment screw holes.
Always use the removal tools in pairs!
13. Fit the
lifting tool
to the motor.
Choose the correct lifting tool:
•
lifting tool, motor axis 1, 4 and 5, if
the upper arm is positioned
vertically.
•
lifting tool, motor axis 2, 3 and 4, if
the upper arm is positioned hori-
zontally.
14. Lift the motor to get the pinion away from the
gear and disconnect the brake release
voltage.
15. Remove the motor by gently lifting it straight
out.
Make sure the motor pinion is not
damaged!
Action
Note
Continued
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