5 Maintenance and Inspection
Maintenance and inspection procedures
5-125
9) After adjustment fastens the fixing nut of tension adjustment screw <3>, and certainly fixes tension
adjustment screw <3>. Moreover, also fasten the three
motor plate fixing screws <1> certainly (M4 screw:
tightening torque is 4.51 Nm). Improper tightening can cause the belt to loosen with vibration.
10) Check that the belt tension meets the value in Page 135, "(15) Timing belt tension".
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 Page 107, "(2) Timing belt tension
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.
11) Install the J1 motor cover securely as before.
12) Refer to Page 150, "5.6 Resetting the origin", and reset the origin position.
13) When the maintenance forecast function is valid, reset the accumulation data about the belt. Reset by the
dedicated screen or parameter MFBRST of RT ToolBox3. Refer to "RT ToolBox3/RT ToolBox3 mini User's
Manual" for operation of RT3 and refer to "Instruction Manual/Detailed Explanation of Functions and
Operations" for the parameter.
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