4 Repair
4.7.4. Replacement of gearbox, axis 4
3873HAC022033-001 Revision: K
© Copyright 2004-2011 ABB. All rights reserved.
Required equipment
Removal, gearbox axis 4
The procedure below details how to remove gearbox, axis 4.
Equipment, etc. Spare part no. Art. no. Note
Gear axis 4 3HAC17810-1 Includes all o-rings!
O-ring 3HAB3772-49 Replace if damaged!
O-ring 3HAB3772-50 Replace if damaged!
Friction washer 3HAC10122-27 2 pcs. Must be replaced at
assembly!
Gasket, cover axis 4 3HAC11423-3
Grease 3HAB3537-1 For lubrication of gearbox,
motor and motor attachment
mating surfaces.
Guide pins M10 x 100 3HAC15521-1 Always use the guide pins in
pairs!
Guide pins M10 x 150 3HAC15521-2 Always use the guide pins in
pairs!
Standard toolkit - Content is defined in section
Standard toolkit on page
427.
Calibration Pendulum
toolkit
3HAC15716-1 Complete kit that also
includes operating manual.
Other tools and procedures
may be required. See
references to these
procedures in the step-by-
step instructions below.
These procedures include
references to the tools
required.
Action Note
1.
DANGER!
Turn off all electric power, hydraulic and pneumatic
pressure supplies to the robot!
Turn off all electric power and hydraulic but not the air
pressure to the gearboxes, motors and SMB.
2. Drain the oil from the primary gearbox through the oil
plug, draining.
Detailed further in section Oil
change, gearbox, axis 4 on page
209.
3. Drain the oil from the secondary gearbox through the
oil plug, draining.
Shown in the figure Location of
gearbox on page 386.
Draining is further detailed in
section Oil change, gearbox,
axis 4 on page 209.
4. Remove the plastic housing from the cover, axis 4
gearbox.
5. Remove the cover, axis 4 gearbox by unscrewing its
attachment screws.
Shown in the figure Location of
gearbox on page 386.
Continued
Continues on next page
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