3 Maintenance
3.3.7. Inspection, balancing device
3HAC023082-001 Revision: E156
© Copyright 2004-2008 ABB. All rights reserved.
Check for leakage
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 no be confused with incorrect leaks from the ear.
Leaks at the o-rings, however, are not acceptable and must be attended to immediately in
order to avoid any damage to the bearing!
Check the o-rings in the front ear of the balancing device for leaks, as shown and detailed
below.
xx0500002506
A Shaft
B O-ring
C Sealing spacer
D Sealing ring in sealing spacer
E Correct way out for excessive grease from inside the front ear
F Incorrect leakage from the front ear
Action Note
1. Clean the area at the front ear from old grease.
2. Run the robot for some minutes, in order to
move the balancing device piston.
Continued
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