IAI America IF - Manual (Page 51)

5. Maintenance inspection
45
5.7.1 Belt Tension Adjustment Method
Since inadequate belt tension will lead to location drift due to gear skipping, noise occurrence as
well as cause the motor to breakdown, proper tension adjustment is required.
[How to Adjust the Timing Belt:]
Remove the pulley cover, loosen the 4 tension adjustment bolts and lift the motor cover up to place
the appropriate axis load onto the belt, and tighten the 4 tension adjustment bolts (see chart
below).
For the tension loads, comply with the standards below.
Model Axis load : A
S Type 5kgf
M Type 10kgf