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5 Maintenance and Inspection
(4) Replacing the J3 axis timing belt
CAUTION
The procedure for replacing the J3 axis timing belt is shown below. The diagram shows an image of the removed
No. 2 arm cover U.
After replacing the J3 axis timing belt the resetting the origin of J3 and J4 axis is necessary.
1) Move the J3 axis to the position lowered about 30mm from the upper limit by jog operation. This position makes
the space for removing the belt.
After moving the J3 axis turn the controller's power supply OFF.
2) Refer to
Page 67, "5.3.2 Installing/removing the
3) Loosen the nut of tension adjustment screw <1>, and loosen the tension adjustment screw <1>.
4) Remove three fixing screws <2>, remove the J3 axis motor <3>.
5) Remove the timing belt <4> from the timing pulley A <5>.
Maintenance and inspection procedures
5-76
It is possible for the customer to replace the timing belt, but precise adjustment is
needed to prevent malfunction of the relevant parts. To ask for replacement of the
timing belt, contact the dealer.
cover", and remove the No.2 arm cover U.
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