Page 1682 - MiSUMi 2025

[Technical Data]
Timing Belt Replacement Signs

■ Names of Belt Components

Valley of teeth

Tooth Body Rubber
Core Wire
Tooth Tip Tooth Lining (Reinforcement) Tooth Surface

■ Examples of Belt Replacement Signs
Examples Condition

1. When belt tooth reinforcement fabric is worn and rubber/core wire
are exposed
When tooth surface/grooves are worn and rubber/core wire are
exposed

2. When the backing rubber shows cracks due to hardening

3. When cracks reaching the rubber are seen at tooth base

4. Belt side faces are damaged due to wear

5. When missing tooth can be seen

6. When excessive wear can be seen on belt back side

7. When belt or core wire are broken

E These are belt replacement timing guides. Early or periodical replacements are recommended even the signs shown above are not yet
B-037 visible.