Repairs Axis 2
Product Manual IRB 640 23
3.6 Replacing guiding ring, balancing unit
1 Move axis 2 to a position where the balancing unit is in the horizontal position.
2 Remove the circlip from the end cover of balancing unit. See Figure 3.
3 Remove the worn out guiding ring and clean the piston rod. See Figure 3.
4. With the smallest outer diameter facing outwards, force the new guiding ring over
the piston rod. Locate the ring in the end cover. Use tool 3HAC 0879-1.
See Figure 3
5. Install the circlip.
6. Lubricate the piston rod, see Maintenance, Chapter 2.6, Lubricating piston rod,
balancing unit axis 2.
Figure 3 Guiding ring, balancing unit.
Circlip
Guide ring
Circlip
Smallest o.d.
Tool 3HAC 0879-1
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