Maintenance Guide
5-7
5-5 Replacing the Timing Belt
5-5-1 Replacing the Timing Belt for Adjustment of the Transport Width
1) Disconnect the motor relay cable connectors.
2) Loosen the screws (4 pcs.) of the AWC motor bracket and move the motor upward to secure
it temporarily.
3) Remove the timing belt and replace it with a new one.
4) Adjust the timing belt tension to 25±2.5N・m by moving up or down the AWC motor bracket.
Use UNITTA’s sonic belt tension meter (Weight=2.1, Width=9.5, Span=111) for the
adjustment.
5) After adjusted, tighten the screws to secure the motor.
Note) Tension is stretched excessively. → Torque of the drive shaft increases, causing the
motor bearing to break.
Note) Tension is loosened excessively. → Pulley teeth skip, causing noise, or worn-out or
broken timing belt.
Figure 5-5-1-1 Timing Belt for Adjustment of the Transport Width
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