NoteAction
Tightening torque: 2.8 Nm ±10%
xx2100001044
Fasten the screws to the recommended tightening
torque.
7
Used belt: 308Use a sonic tension meter to measure the timing
belt tension.
8
New belt:250
If the timing belt tension does not meet the require-
ment, loosen the motor screws and readjust.
9
Refitting the pulley protection cover
NoteAction
DANGER
Make sure that all supplies for electrical power,
hydraulic pressure, and air pressure are turned
off.
1
CAUTION
For robots with protection type Clean Room
Always cut the paint with a knife and grind the
paint edge when disassembling parts of the robot!
See Cut the paint or surface on the robot before
replacing parts on page 118.
2
Screws: Hex socket head cap
screw M4x10 12.9 Lafre
2C2B/FC6.9 (8 pcs)
Refit the pulley protection cover.3
Secure the screws on the pulley protection cover
to the base.
4
Tightening torque: 0.8 Nm
xx2100001037
Continues on next page
296 Product manual - IRB 920
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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