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4 Repair
4.4.4. Replacement of complete lower arm
3HAC022033-001 Revision: E
264
©
Co
py
rig
h
t 200
4 - 20
08 ABB.
All r
ig
h
ts r
e
se
rv
ed
.
16. Set the indicator on the press tool to zero.
17. Press in the shaft with the hydraulic cylinder by
setting the pressure of the hydraulic pump to
approximately 35-55 MPa and the pressure of
the glycerin pump to 55 MPa.
18. Increase the pressure of the both pumps
alternately until the correct value is reached with
the indicator on the press tool.
Correct value: 2.45 mm ± 0.15 mm
NOTE!
Do not exceed the limit of maximum
pressure classified for the pumps!
19. Remove the press tool, axis 2 shaft.
Release the pressure from the
glycerin pump first, then from the
hydraulic cylinder (approximately 1/2
minute after), in order to avoid
movement of the shaft.
20. Refit the
thrust washer
to the shaft.
Shown in the figure
.
21. Apply
grease
to the location of the shaft where
the bearing is to be mounted.
22. Press the
bearing
in with the
press tool, axis 2
bearing.
Always use a new bearing when reas-
sembling!
Art. no. is specified in
23. Refit the
protection washer and the retaining
ring.
Shown in the figure
.
24. Refit the
protection plug.
Shown in the figure
.
25. Refit and restore the balancing device.
Detailed in section
.
26. Refit the upper arm.
Detailed in section
.
27. Perform a leak-down test.
28. Refill the axis 2 gearbox with oil.
Detailed in section
29. Refit and reconnect all cables inside the lower
arm.
Refit removed cable attachments.
Detailed in section
30. Recalibrate the robot.
Calibration is detailed in a separate
calibration manual, enclosed with the
calibration tools.
General calibration information is
included in section
Action
Note
Continued
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