4.6 How to replace components
4-19
4. Maintenance and Inspection
Belt replacement/adjustment
[Belt Inspection]
1) Detach the pulley cover affixing screws and take off the pulley cover.
2) Check the condition of the belt visually.
Judgment
In generally speaking, it possesses bending life of several million times. However, the period
of replacement for the belt cannot be clearly defined as the durability of it is impacted so
much by the operational conditions.
The timing belt gets worn away as the time passes, and it is necessary to have replacement
at regular intervals with the following conditions as reference.
● When the gear and belt area show obvious friction.
● When swelling occurs as a result of oil adhesion.
● When damages such as a crack occurs on the belt gear and back side.
For the toothed belt, it is recommended to set the interval of regular replacement cycle when
in use under high wire fatigue condition in high acceleration and deceleration because it is
difficult to judge the right timing for replacement by checking appearance or looseness of the
wires strengthening the belt.
Pulley Cover
Pulley Cover Affixing Screw
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