4 Repair
4.4.6. Replacement of lower arm shaft
3033HAC023082-001 Revision: E
© Copyright 2004-2008 ABB. All rights reserved.
Refitting, lower arm shaft
The procedure below details how to refit the lower arm shaft.
Action Note/Illustration
1. Clean the shaft with isopropanol and lubricate it
with glycerin.
Art. no. is specified in Required
equipment on page 300!
2. If the robot is going to work in a water jet application
cell:
Apply Mercasol 3106 on the Support shaft axis 2.
• Apply Mercasol 3106 on both sides of the
thrust washer, all around the bearing and on
surface on the shaft.
xx0600003137
• A: Mercasol on marked
areas.
3. Push the shaft in by hand.
4. Refit the thrust washer to the shaft. Also shown in the figure
Components, lower arm shaft on
page 299!
5. Apply the press device, axis 2 shaft against the
shaft.
Art. no. is specified in Required
equipment on page 300!
6. Tighten the M16 nut. Tightening torque: 20 Nm.
7. Fit both the hydraulic pump and the glycerin pump
to the press device.
Art. no. is specified in Required
equipment on page 300.
The attachments on the tool are
shown in the figure Press device for
refitting of axis 2 shaft on page 301.
8. Set the indicator on the press device to zero. Shown in the figure Press device
for refitting of axis 2 shaft on page
301.
9. 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.
10. 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!
11. When a correct value is reached, release the
pressure from the glycerin pump first, then from the
hydraulic pump (approximately 1/2 minute after), in
order to avoid movement of the shaft.
12. Remove the press device, axis 2 shaft.
Continued
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