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5 Maintenance and Inspection
(7) RV-2FR series: Inspection and replacement of J5 axis timing belt and brake timing belt
The J5 axis has the timing belt rotating the J5 axis and the brake timing belt conveying the brake. The
inspection and replacement method of each belt is shown below.
A) Inspection, maintenance and replacement of J5-axis timing belt
The reference figure at inspection and replacement of the timing belt is shown in
<1>Motor plate fixing screw
Fig.5-14 ： Inspection and replacement of J5 axis timing belt (RV-2FR series)
■ Inspecting the J5 axis timing belt
1) Refer to
Page 100, "5.3.2 Installing/removing the
2) Visually confirm that the symptoms indicated in
occurred with the timing belt.
3) Refer to
Page 107, "(2) Timing belt tension
4) Install the No. 2 arm cover R securely as before and finish inspection.
■ Replacing the J5 axis timing belt
CAUTION
1) Refer to
Page 100, "5.3.2 Installing/removing the
2) Make sure that the pulleys do not move while replacing the belt. If the timing pulley A <4> and B <5> position
relation deviates, the position could deviate.
3) Make marks on the timing belt <2> and timing pulleys <4> and <5> with a felt-tip pen as shown in
that the engagement of the timing belt <2> and timing pulleys <4> and <5> does not deviate.
4) Lightly loosen the three
5) Loosen the nut fixing tension adjustment screw <3>. Loosen the tension adjustment screw <3>, and remove
the old belt.
6) Copy the marks onto the new timing belt. Make sure that both belts are tense when making the marks.
7) Align the new timing belt with the marks on the timing pulleys <4> and <5>, and install.
8) Turn tension adjustment screw <3>, and adjust the tension of timing belt <2>.
When the screw is turned to the right, the belt will be stretched, and when turned to the left, will loosen.
Adjust the belt tension slack to within the range as shown in
Before the tension measurement, rotate the timing pulley at least three times in each direction so that the
timing belt fits in the pulley. Check the tension measurement method in
measurement".
If the belt is loosened too much when adjusting the tension causing it to come off the timing pulleys <4> and
<5>, or if the belt and pulley teeth engagement is deviated, the machine system's origin will deviate.
Maintenance and inspection procedures
5-116
<4> Timing pulley A
(motor side)
Mark
<3>Tension adjustment screw
With the fixing nut
measurement", and confirm the belt tension.
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.
motor plate fixing screws
<2> Timing belt
<1>Motor plate fixing screw
cover", and remove the No. 2 arm cover R.
Page 106, "(1) Timing belt replacement period"
cover", and remove the No. 2 arm cover R.
<1>. (Do not loosen too much.)
Page 135, "(15) Timing belt
Fig.
5-14.
Mark
J5 axis
<5> Timing pulley B
(joint side)
have not
Fig. 5-14
tension".
Page 107, "(2) Timing belt tension
so
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