Note
Action
Releasing the brakes of the axis-3 motor
unloads the weight of the upper arm by
stretching the roundslings.
9
See the figure in:
•
Location of the complete upper arm
on page 247
Remove the
attachment screws
that secure
the upper arm to the lower arm.
Note
Do not remove the attachment screws se-
curing the gearbox axis 3 to the armhouse!
10
CAUTION
The robot upper arm weighs 140 kg.
All lifting accessories used must be sized
accordingly!
11
WARNING
The cable harness is still installed on the
robot! Make sure not to damage the cable
harness or the cable brackets on the ro-
bot.
Remove the upper arm from the lower arm
and leave it hanging in the air.
CAUTION
When the upper arm no longer is attached
to the robot, the armhouse has a tendency
to drop down a little. In order to prevent this
is to rise the front end of the upper arm a
little before removing the attachment screws
securing the upper arm.
12
CAUTION
The gearbox weighs 23 kg.
All lifting accessories used must be sized
accordingly!
13
Always use guide pins in pairs!
Remove two attachment screws diagonally
located and insert guide pins.
14
See the figure in:
•
Location of gearbox axis 3 on
page 326
Remove the remaining
attachment screws
that secures the gearbox.
15
Note
There will be some surplus oil in the gear-
box. Place some absorbant cloth or similar
under the gearbox.
16
Note
Always use removal tools in pairs diagon-
al to each other.
Slide the gearbox carefully out onto the
guide pins and lift it away.
If necessary, use a pair of screws to push
out the gearbox.
CAUTION
Remaining oil will drain out from the gear-
box cavity when the gearbox is lifted out.
17
Continues on next page
330
Product manual - IRB 4600
3HAC033453-001 Revision: Y
© Copyright 2009-2021 ABB. All rights reserved.
4 Repair
4.8.3 Replacing gearbox axis 3
Continued
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