4 Repair
4.4.5. Replacement of lower arm shaft
267
3HAC020993-001 Revision: G
©
Co
py
rig
h
t 200
4-
200
8 ABB. All righ
ts reser
v
ed.
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
!
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 263
5. Apply the
press device, axis 2 shaft
against the
shaft.
Art. no. is specified in
!
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
.
The attachments on the tool are
shown in the figure
refitting of axis 2 shaft on page 265
8. Set the
indicator
on the press device to zero.
Shown in the figure
for refitting of axis 2 shaft on page
265
.
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.
A
A
Continued
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