Maintenance and inspection procedures 5-133
(14) RV-4FR/7FR/13FR series: Inspection and replacement of J6-axis timing belt
The reference figure at inspection, adjustment, and replacement of the timing belt is shown in
(RV-4FR/
7FR series, RV-7FRLL) or
(RV-13FR/13FRL, RV-20FR series).
Fig.5-25 : Inspection and replacement of J6 axis timing belt (RV-4FR/7FR series, RV-7FRLL)
Fig.5-26 : Inspection and replacement of J6 axis timing belt (RV-13FR/13FRL, RV-20FR series)
■ Inspecting the J6 axis timing belt
Page 100, "5.3.2 Installing/removing the cover"
, and remove the No. 2 arm cover L.
2) Visually confirm that the symptoms indicated in
"(1)Timing belt replacement period"
have not occurred with
the timing belt.
3) Refer to
Page 107, "(2) Timing belt tension measurement"
, and confirm the belt tension.
4) Install the No. 2 arm cover L securely as before and finish inspection.
■ Replacing the J6 axis timing belt
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.
Page 100, "5.3.2 Installing/removing the cover"
, and remove the No. 2 arm cover L.
2) Make sure that the pulleys do not move while replacing the belt. If the 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 the figure
above, so that the engagement of the timing belt <2> and timing pulleys <4> and <5> does not deviate.
4) Lightly loosen the two motor plate fixing screws <1>. (Do not loosen too much.)
<2> Timing belt
<4> Timing pulley A
(motor side)
<3>Tension adjustment screw
With the fixing nut
Mark
<1>Motor plate fixing screw
<5> Timing pulley B
(joint side)
Mark
RV-4FR/7FR series
RV-7FRLL
RV-13FR/13FRL
RV-20FR series
<2> Timing belt
<4> Timing pulley A
(motor side)
<3>Tension adjustment screw
With the fixing nut
<1>Motor plate fixing screw
<5> Timing pulley B
(joint side)
Mark
Mark
CAUTION