4 Repair
4.5.1. Replacement of lower arm
3HAC022032-001 Revision: E
162
© Copyri
ght
200
4-2008 ABB.
All rights reserved.
Refitting, lower arm
The procedure below deatails how to refit the lower arm to the robot.
4. Remove the complete upper arm.
Detailed in section
Removal of
complete upper arm
.
5. Attach a crane to the lower arm and unload
the weight.
6. Remove the balancing device.
.
7. Remove the parallel arm.
parallel arm / Replacement of bearing
on page 168
.
8. Remove the attachment screws and friction
washers, lower arm.
Shown in the figure
9. Remove the lower arm from the manipula-
tor.
Action
Info/Illustration
Action
Info/Illustration
1.
Turn off all electric power, hydraulic and pneumatic
pressure supplies to the robot!
For Foundry Prime robots: Do not turn off the air
pressure to motors and SMB.
2.
The lower arm weighs 68 kg! All lifting equipment
used must be sized accordingly!
3. Move the damper and the calibration plate from the
old to the new lower arm.
Part no. is specified in
Required equipment on
page 161
4. Check and grease both V-rings in the frame. Replace
if damaged.
Part no. is specified in
Required equipment on
page 161
5. Lift the lower arm and lower it into mounting position.
Make sure both V-rings stay seated properly!
6. Refit the lower arm to the gearbox axis 2 with
attachment screws and friction washers, lower arm.
10 pcs. M16x55. Tightening
torque: 260 Nm.
Shown in the figure
7. Grease the bearing seating of the parallel arm in the
lower arm, to prevent clicking during operation.
8. Refit the parallel arm.
parallel arm/bearing on page
170
Continued
Continues on next page
Summary of Contents for IRB 4400 - 45
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