- hardened rubber on the outside of the belt. The outer side of the belt is shiny, inelastic and so hard that when pressed hard with a fingernail, no marks are left on it (pic. 4.3);
- cracks in the rubber on the outside 1 (pic. 4.4a);
- cracks or loose material 2 (pic. 4.4b);
- cracks at the root of the tooth 3 (pic. 4.4);
- cracks on belt backs 4 (pic. 4.5);
- the sides of the belt are heavily worn (pic. 4.5);
- severely worn teeth (pic. 4.6);
- Initial stage: The material of the side of the belt that was subjected to the greatest load is worn out (the fabric is frayed, the rubber is flaking, the color has turned white; material structure is not defined).
- Final stage: The fabric on the side of the teeth on the high load side is worn out and the rubber is completely exposed (reduced tooth width);
- broken teeth (pic. 4.6).
Pic. 4.4a. The outer side of the belt is so hard that when pressed hard with a fingernail, no marks remain on it | Pic. 4.4b. Cracks and delamination of the drive belt |
Pic. 4.5. Belt side condition | Pic. 4.6. Belt wear |