ABB IRB 4400 - 45, Product Manual

Page: 138 / 322

4 Repair
4.4.1. Replacement of complete upper arm
3HAC022032-001 Revision: E 136
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4. Lower the upper arm into mounting position.
5. Refit both shaft ends. Shown in the figure Location of
upper arm on page 133 .
Part no. is specified in Required
equipment on page 134 .
6. Insert both screws. Shown in the figure Location of
upper arm on page 133 .
2 pcs, tightening torque: 470
Nm.
7. If the bearing is removed, the inner ring of the
bearing is fitted as follows:
• Fit the holding-on tool (part A of the
mounting tool) on the right side of the
upper arm (seen from behind).
• Fit the inner ring (C) of the bearing on the
left side of the upper arm, using the press
tool (part B of the mounting tool).
• Remove the holding-on tool and fit the
inner ring also on that side.
Art. no. is specified in Required
equipment on page 134 .
xx0300000130
• A: Holding-on tool
• B: Press tool
• C: Inner ring
8. Apply locking liquid on the threads of the KM nut. Locking liquid specified in
Required equipment on page
134
Shown in the figure Required
equipment on page 134 .
9. Tighten the KM nut...
• on the left side, with torque 95 Nm in
order to center the upper arm
• on the right side first with 105 Nm. Then
unscrew the KM nut and re-tighten it with
torque 95 Nm.
Note! This procedure must be performed within
10 minutes, before the Loctite begins to harden.
10. Fit new VK covers.
Note! If the covers have no grooves for venting,
the air must be evacuated by using the de-air tool
(A). Also use a clamp as an aid in positioning the
covers tilted, to avoid overpressure.
Part no. is specified in Required
equipment on page 134 .
Shown in the figure Location of
upper arm on page 133 .
xx0300000134
• A: De-air tool, used if the
VK-cover has no grooves
for venting.
11. Refit the tie rod. Detailed in section Refitting of tie
rod .
Action Info/Illustration
Continued
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