NoteAction
Screws: Hex socket head cap
screw M4x16 12.9 Lafre
2C2B/FC6.9 (3 pcs)
Refit the motor and refit the timing belt to the
motor.
Ensure that the belt runs correctly in the grooves.
3
Washers: Plain washer machining
4.2x9x2 steel (3 pcs)
Refit the screws and washers without fully
tightened.
4
Tightening torque: 2.8 Nm ±10%
xx2100001038
Timing belt A1:
3HAC070449-001
Hang a strap to the hook on the motor.5
Used belt: 51.1Use a handheld dynamometer hooking to the strap
and pull the dynamometer to make the tension
falling in the allowed force range.
Note
During the measurement, make sure that all inter-
ferences that may affect the force are removed.
Pay attention to the force application direction.
6
New belt:90
xx2100001043
Continues on next page
Product manual - IRB 920 295
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
5 Repair
5.4.2 Replacing the axis-1 timing belt
Continued
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