ABB IRB 920 Product Manual page 507

4
Removing the pulley on the ball screw upper position
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Product manual - IRB 920
3HAC075721-001 Revision: C
Action
Remove the mechanical stopper.
Tip
Hold the ball screw to prevent it from dropping.
Or the ball screw may be destroyed.
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.
Action
DANGER
Make sure that all supplies for electrical power,
hydraulic pressure, and air pressure are turned
off.
ELECTROSTATIC DISCHARGE (ESD)
The unit is sensitive to ESD. Before handling the
unit read the safety information in section
unit is sensitive to ESD on page
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.
Remove the screws.
Remove the pulley 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.
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5.6.5 Replacing the ball screw
Note
xx1800002859
Note
The
49.
xx2100001089
5 Repair
Continued
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