3 Maintenance
3.3.7. Inspection, balancing device
1733HAC022033-001 Revision: K
© Copyright 2004-2011 ABB. All rights reserved.
Check for contamination / lack of free space
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.
3. Check the o-rings at the front ear for leakage.
Replace the o-rings, if any leaks are detected.
Excessive grease from between the shaft and
the sealing ring is normal and is not considered
as a leak!
The o-rings are included in the
Maintenance kit, bearings and seals,
already assembled with sealing
spacers and sealing rings.
Art. no. for the kit is specified in
Required equipment on page 169.
The replacement of the complete
bearing is also detailed in section
Replacement of spherical roller
bearing, balancing device on page
316.
Incorrect leakage is shown in the
previous figure.
Action
1.
DANGER!
Turn off all electric power, hydraulic and pneumatic pressure supplies to the robot!
Turn off all electric power and hydraulic but not the air pressure to the gearboxes, motors
and SMB.
2. Check that there are no obstacles inside the frame, that could prevent the balancing
device from moving freely. See the figure Inspection points, balancing device on page
169.
Keep the areas around the balancing device clean and free from objects, such as service
tools.
Continued