ABB Robotics IRB 6790 Product Manual page 393

Unloading a new spare part, balancing device
1
2
Refitting the rear shafts
Perform this procedure on both sides.
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 spring unit! This tool
is only used to lock the spring unit in a
compressed 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).
Before a new spare part balancing device
is fitted, the springs must be unloaded us-
ing the Hydraulic press tool, balancing
device 3HAC020902-001.
Action
DANGER
Turn off all:
• electric power supply
• hydraulic pressure supply
to the robot, before entering the robot
working area.
Lift the balancing device into position in
the cradle.
Apply a big screwdriver between the cradle
and the balancing device, as shown in the
figure when the shafts are refitted.
Apply the refitting tool and press the shafts
into position one at a time.
© Copyright 2019 - 2020 ABB. All rights reserved.
4.6.2 Replacing the balancing device
Note
How to unload a new balancing device (a
spare part, not yet fitted to the robot) is
described in Unloading the balancing
device on page 411.
Note
xx1300000838
Dismantle and mounting tool:
3HAC028920-001
Continues on next page
4 Repair
Continued
393