ABB IRB 920 Product Manual page 682

5 Repair
5.6.11 Replacing the outer arm
Continued
3
4
Refitting the ball screw with the flange
1
2
Continues on next page
682
Action
Refit the pulley to the ball screw carefully.
CAUTION
If the ball screw nut or ball screw spline nut go
out of the screw shaft, the ball screw is destroyed.
Be careful when you do any work that may cause
this.
Refit the screws.
Tip
Secure with the stopping tool to prevent the pulley
from rotating.
Action
For robots with protection type Clean Room:
Clean the joints that have been opened and wipe
the parts free from particles with spirit on a lint
free. See Cut the paint or surface on the robot
before replacing parts on page 118
Note
After all repair work, wipe the Clean Room robot
free from particles with spirit on a lint free cloth.
Refit the ball screw assembly to the outer arm.
Tip
Make sure the marked location is aligned with the
ball screw shaft grooves.
CAUTION
With the inserting of the ball screw shaft, remove
the special tool along with the ball screw shaft
carefully.
© Copyright 2022 ABB. All rights reserved.
Note
Screws: Hex socket head cap
screw M5x12 12.9 Lafre
2C2B/FC6.9 (6 pcs)
Washers: Spring washer 9x4.3x1
Steel (6 pcs)
Tightening torque: 4.4 Nm ±10%
xx2100001085
Note
IRB 920 special tool:3HAC077249-
001
xx2100001083
Product manual - IRB 920
3HAC075721-001 Revision: C