ABB IRB 6700 Series Product Manual page 669

4.8.3 Replacing the axis-2 gearbox (IRB 6700 - 235/2.65, IRB 6700 - 205/2.80, IRB 6700 - 175/3.05, IRB
Follow the order of the procedures according to the order they are presented.
Preparations before replacing the axis-2 gearbox
1
2
3
Unloading or locking the balancing device springs
Use this procedure to unload the balancing device with the help of the robot, and
lock the balancing device springs in a compressed position, using the Distance
tool (3HAC030662-001).
1
2
Product manual - IRB 6700
3HAC044266-001 Revision: N
6700 - 150/3.20, IRB 6700 - 200/2.60, IRB 6700 - 155/2.85)
CAUTION
When performing these procedures, the cable harness will still be fitted or partly
fitted to the robot. Use extreme caution not to cause any damage to the cable
harness.
Action
Decide which calibration routine to use,
and take actions accordingly prior to begin-
ning the repair procedure.
DANGER
Turn off all:
• electric power supply
• hydraulic pressure supply
• air pressure supply
to the robot, before entering the robot
working area.
Begin draining the gearbox.
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°
© Copyright 2013 - 2018 ABB. All rights reserved.
Note
See Draining the axis-2 gearbox on
page 166.
Note
This is done in order to compress the bal-
ancing device springs inside the balancing
device before fitting the Distance tool.
Continues on next page
4 Repair
Continued
669