ABB IRB 660, Product Manual, Page: 170 / 362

Note Action
Look through the empty mounting hole of the
axis 1 motor to assist in aligning the as-
sembly during refitting of the complete arm
system. 7
CAUTION
This is a complex task to be performed
with utmost care in order to avoid injury
or damage!
Use a crank to turn the gearbox in order
to find the right position for the holes.
Lower the complete arm system with guid-
ance from the guide pins previously fitted to
the axis 1 gearbox.
Note
The refitting must be made completely level!
Make sure the roundslings are adjusted prior
to refitting the arm system.
8
Reused screws can be used providing
they are lubricated as described in
Screw
joints on page 343 .
xx0600003070
Place the serrated lock washers on the attach-
ment screws.
Note
Check that the serrated lock washers are
turned the correct way. See figure!
9
Parts:
A Serrated lock washer (24 pcs)
B Axis 1 gearbox
C Attachment screws M12x110 qual-
ity 12.9 gleitmo (24 pcs)
Fit 22 of the 24 attachment screws before the
arm system is completely lowered. 10
This is done in order to be able to attach all
screws into the threads correctly.
Replace the guide pins with the remaining
attachment screws and secure the complete
arm system to the base with its attachment
screws and washers. 11
Lower the arm system completely. 12
Tightening torque:
• 115 Nm.
Secure the complete arm system with its at-
tachment screws .
13
See Replacing cable harness, lower end
(axes 1-3) on page 150 .
Refit the cable harness in the base and the
frame. 14
See Replacing motor, axis 1 on page 251 . Refit the axis 1 motor. 15
Continues on next page
170 Product manual - IRB 660
3HAC025755-001 Revision: W
© Copyright 2006-2020 ABB. All rights reserved.
4 Repair
4.3.3 Replacing the base, including axis 1 gearbox
Continued