ABB IRB 6660 Product Manual page 268

4 Repair
4.5.3 Replacing the balancing device
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268
Action
Remove the protection hood in the upper end
of the balancing device.
Insert two screws, M12x50 in the holes to
neutralize the spring force. Screw in the screws
until they have proper contact with the cylinder
inside.
The length of the cylinder is now locked and
the balancing device is unloaded. It should now
be possible to easily rotate the balancing
device.
Attach a lifting accessories to the balancing
device.
Use the hole in the lifting ear.
Remove the upper and lower lock nuts and
support washers (2+2 pcs).
Note
Make sure that the shaft between the upper and
lower arm does not rotate when unscrewing the
lock nuts! The lock nut is locked with Loctite
243.
Fit the auxiliary shafts on the upper and lower
pivot shaft.
Fit the short auxiliary shaft on the upper shaft
and the longer on the lower shaft.
Stretch the roundsling.
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Note
xx1000001112
xx1000001113
Art.no. is specified in Required equip-
ment on page 266
Product manual - IRB 6660
3HAC028197-001 Revision: S