ABB IRB 660 Product Manual page 105

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Product manual - IRB 660
3HAC025755-001 Revision: W
3.3.4 Inspecting, balancing device bearings and piston rod guide ring
Action
Remove the protection hood from the
M12 hole on top of the balancing device.
Unload the bearings using a M12x50
screw, in the hole for the protective hood,
at the cylinder top.
Pull out the cylinder a little, in order to
be able to inspect the inner rings without
removing the balancing cylinder.
Wipe the inner rings clean and check that
there are no pressure marks or other
similar deformations.
Inspect the bearings, support washers
and sealing rings.
If any of the parts looks abnormal, re-
place.
Lubricate the shafts, if needed.
Push the cylinder back in.
Remove the auxiliary shafts.
Remove the M12x50 screw.
Put back the protection hood in the hole.
Apply locking liquid on the lock nuts
(KM10) and refit them.
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3 Maintenance
Note
xx0600002687
A Attachment (seen from above)
B Protection hood
Shown in previous figure in this procedure.
Note
It is quite normal for the bearing races to
have a darker color than the surrounding
material.
Shown in previous figure.
Detailed in section Replacing the balancing
device on page 236.
Make sure that the inner support washers
and sealing rings get in the correct position.
Note
Don´t forget to remove the screw!
If the screw isn´t removed it may damage the
balancing device, when the robot starts op-
erating.
Tightening torque on the lock nuts:
• 120 Nm
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