ABB IRB 6650S Product Manual page 254

4 Repair
4.4.3 Replacement of upper arm
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254
Action
Lift the upper arm and move to its mounting
position.
CAUTION
Make sure the lift is done completely level!
Fit in the gearbox attachment holes with the
attachment holes on the lower arm with the
guide pins.
Fit the three washers to be placed beneath the
attachment screws.
Insert 31 of the 33 attachment screws, upper
arm into the attachment holes in the lower arm.
Do not remove the guide pins until the attach-
ment screws are tightened as detailed below.
Secure the lower arm to gearbox axis 3, with
the attachment screws.
Remove the guide pins and fit the two remaining
attachment screws. Tighten them as detailed
above!
Refit the axis-3 motor.
Remove the lifting accessories.
Refit any cabling removed during the removal
process.
Reconnect all connectors inside motors, axis 3
and 4. Refit the motor covers.
Reconnect connector R2.M5/6 gently at the
cable harness division point, with 2 screws, M6.
Be careful not to bend the attachment plate
when fastening the screws!
Perform a leakdown test.
Refill the gearbox with oil.
© Copyright 2004-2022 ABB. All rights reserved.
Note
Art. no. is specified in Required equip-
ment on page 250.
Shown in the figure Location of upper
arm on page 247.
Shown in the figure Location of upper
arm on page 247.
Removing the plastic mechanical stops
may be required before fitting the upper
arm.
If guide pins are removed before the
screws are tightened, the sealing can
be involuntarily moved into wrong pos-
ition.
33 pcs: M12 x 50; 12.9 quality UN-
BRAKO, tightening torque: 120 Nm.
Reused screws may be used, providing
they are lubricated as detailed in sec-
tion Screw joints on page 411
ting.
See Replacement of motor, axis 3 on
page 310.
Detailed in section Performing a leak-
down test on page 190.
Detailed in section Changing oil, axis-
3 gearbox on page 159.
Product manual - IRB 6650S
3HAC020993-001 Revision: AG
before fit-