If dissonance is detected...Check for dissonance
from...
...replace the balancing device or consult ABB Robotics.
• balancing device (a
tapping sound,
caused by the springs
inside the cylinder).
2
How to replace the device is detailed in section Repla-
cing the balancing device (design 1) on page 302. This
section also specifies the spare part number!
... perform maintenance according to given instructions
in Maintenance kit, complete.
• piston rod (squeaking
may indicate worn
plain bearings, intern-
al contamination or
insufficient lubrica-
tion).
3
Art. no. for the kit and the documentation are specified
in section Required equipment on page 145.
Check for damage
Check for damages, such as scratches, general wear, uneven surfaces or incorrect
positions.
The check points are shown in the figure Inspection points, balancing device on
page 144.
If damage is detected...Check for damage on...
... perform maintenance according to given
instructions in Maintenance kit, complete.
• the piston rod (part of the piston
rod that is visible at the front of the
balancing device).
1
Art. no. for the kit and the documentation
are specified in section Required equip-
ment on page 145.
Check for leakage - Design 1
The front ear of the balancing device is lubricated with grease. After filling, excessive
grease may normally be forced out between the shaft and the sealing ring in the
sealing spacer. This is normal behaviour and must not be confused with incorrect
leaks from the ear.
Leaks at the o-rings and/or sealings, are not acceptable and must be attended to
immediately in order to avoid any damage to the bearing!
Continues on next page
146 Product manual - IRB 6640 Foundry Prime
3HAC040586-001 Revision: N
© Copyright 2011-2018 ABB. All rights reserved.
3 Maintenance
3.3.7 Inspecting the balancing device
Continued
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