ABB Robotics IRB 6790 Product Manual page 371

Locking the balancing device springs with the Distance tool
Use this procedure to unload the balancing device springs with the help of the
robot, and to lock the springs in a compressed position, using the Distance tool
(3HAC030662-001).
1
2
3
4
Product manual - IRB 6790
3HAC063331-001 Revision: B
Action
DANGER
Do not use the Distance tool (3HAC030662-
001) to unload or restore the pressure of
the balancing device springs! This tool is
only used to lock the spring unit in a com-
pressed position, after axis-2 has been
jogged to -30° or +30°. Fitting and removal
of the tool shall only be done with axis-2 in
this position!
To unload or restore a new balancing
device or if the spring unit of the balancing
device cannot be compressed by jogging
the robot, only use the Hydraulic press tool,
balancing device (3HAC020902-001).
Jog axis-2 to:
• -30° or +30°
DANGER
Turn off all:
• electric power supply
• hydraulic pressure supply
to the robot, before entering the robot
working area.
Remove the cover plate on the back of the
balancing device.
DANGER
DO NOT remove any other screws then the
rear cover attachment screws!
© Copyright 2019 - 2020 ABB. All rights reserved.
4.6.1 Replacing spherical roller bearing, link ear
Note
This is done in order to compress the bal-
ancing device springs inside the balancing
device before fitting the Distance tool.
xx1300000554
4 Repair
Continued
Continues on next page
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