Measuring the play
NoteAction
Dial gaugeMeasure the play in three places, with a
dial gauge with magnetic base.
Note
It shall be 90° between the dial indicator
arm and the magnetic base, and 90°
between the arm to the dial indicator.
1
Disassemble the gear.2
Use the instruction in this step and reduce
the number of shims:
3
Example: If the measured value is 0.14 mm
and 1.4 mm of shims are removed, it will
theoretically end up as zero. The value
must never be lower than the minimum gap
around a complete revolution or the gear.
MicrometerPut shims according to the obtained
measurement and control with a micromet-
er that the value is correct.
4
Tightening torque: 300 NmSecure the gear with three of the M16x50
screws attached in a triangle.
5
Measure the play again. If the measured
result deviates too much, the gear must be
disassembled and the number of shims be
adjusted.
6
Refitting the axis-4 gear Z3 - Step 2
NoteAction
Attachment screws: M16x50 12.9 Gleitmo
603 (9 pcs)
When the play is measured and approved,
fit the remaining attachment screws.
1
Attachment screws: M12x40 12.9 Gleitmo
603 (27 pcs)
xx1500003080
Tightening torque: 300 NmSecure the M16 screws.2
Tightening torque: 120 NmSecure the M12 screws.3
Continues on next page
Product manual - IRB 8700 779
3HAC052853-001 Revision: F
© Copyright 2015-2018 ABB. All rights reserved.
4 Repair
4.8.5 Replacing the axis-4 primary gearbox
Continued
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