4 Repair
4.4.3. Replacement of the upper arm
3HAC027151-001 Revision: B182
© Copyright 2006-2008 ABB. All rights reserved.
Removal
The procedure below details how to remove the upper arm.
Other tools and
procedures may be
required. See
references to these
procedures in the
step-by-step instruc-
tions below.
These procedures include
references to the tools
required.
Equipment, etc. Spare part no. Art. no. Note
Action Note
1.
DANGER!
Turn off all electric power, hydraulic and
pneumatic pressure supplies to the robot!
2. Drain the oil from gearbox axis 3. Detailed in section Oil change, gearbox,
axis 3 on page 132.
3. Raise the upper arm to a position where it is
parallel to the floor, by releasing the brake of
the axis 3 motor.
In order to release the brake of the axis 3
motor, connect the 24 VDC power supply.
Note! When releasing the brake, the
position of the upper arm can change
suddenly! Perform the procedure carefully!
Connect to connector R2.MP3:
• + : pin 2
• - : pin 5
4.
CAUTION!
The complete upper arm (incl. gearbox axis
3) weighs 282 kg without any additional
equipment fitted! Use a suitable lifting
device to avoid injury to personnel!
Continued
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