NoteAction
For robots with protection class
IP30 (option 3350-300)
xx2100001182
Remove the screws on the gear to the inner arm.3
Remove the gear unit.
Note
For robots with protection class IP54 (option 3350-
540)
For robots with protection type Clean Room (op-
tion 3351-1)
Remove the gear unit and the O-ring through the
cable slightly.
Tip
Check the O-ring and replace it if needed.
4
For robots with protection class
IP54 (option 3350-540)
Tip
Wrap the connectors with the masking tape.
For robots with protection type
Clean Room (option 3351-1)
xx2100002439
Removing the axis-1 gear unit sub-assembly
NoteAction
DANGER
Make sure that all supplies for electrical power,
hydraulic pressure, and air pressure are turned
off.
1
CAUTION
For robots with protection type Clean Room
Always cut the paint with a knife and grind the
paint edge when disassembling parts of the robot!
See Cut the paint or surface on the robot before
replacing parts on page 118.
2
Continues on next page
358 Product manual - IRB 920
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
5 Repair
5.5.1 Replacing the inner arm
Continued
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