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5 Maintenance and Inspection
6) Remove the timing belt <4> from the top of the shaft
If using the optional hand internal wiring and piping set, temporarily remove the hand input cable connector
<11> and air hoses <12> of solenoid valve side. And remove the timing belt to upward.
7) Install the new timing belt in reverse procedure of removal.
Install the new belt to the timing pulley (on the motor) <5> and timing pulley B <6> securely.
Fix the shaft fixing plate <8> by fastening the original fixing screws securely.
If using the hand input cables <11> and air hoses <12>, connect them as before.
8) Install the J3 axis motor <3> by tightening lightly the J3 axis motor fixing screw <2> (two screws)
9) Adjust the tension of J3 axis timing belt with referring to
J3 axis timing
belt".
10) Install No.2 arm cover U securely as before.
11) Reset the origin of J3 and J4 axis with referring to the
12) When the maintenance forecast function is valid, reset the accumulation data about the belt. Reset by the
dedicated screen or parameter MFBRST of RT ToolBox2.
13) Refer to "Instruction Manual/RT ToolBox2 User's Manual" for operation of RT2 and refer to "Instruction
Manual/Detailed Explanation of Functions and Operations" for the parameter.
This completes replacement of the J3 axis timing belt.
Maintenance and inspection procedures
5-78
Remove to upward
<4> Timing belt
Page 75, "(2) RH-3FH series: Inspecting/Adjusting the
Page 96, "5.6 Resetting the origin"
<11> Hand input cable con -
nector
Remove temporarily
<12> Air hoses
Remove temporarily
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