2.1.10. Drive of hinged units

Survey and check of the drive
Visually examine on existence of obvious signs of mechanical damages.
About 15 cracks on a belt edge at distance of 100 mm are allowed. If cracks exceed an admissible limit or lack of any fragments of a belt is found, establish a new belt of hinged units.

ATTENTION
Do not grease a belt of the drive of hinged units, its natyazhitel or an intermediate pulley(s) since it can lead to damage of structure of material of a belt of the drive, mechanism of damping of a natyazhitel of a belt, the bearing of a pulley of a natyazhitel and the bearing of an intermediate pulley(s).

Small scattered deposits of a rubber crumb do not testify to malfunction of a belt and therefore the new belt of the drive of hinged units should not be established.
The extended deposits of a rubber crumb occupying up to 50% of height of an edge of a belt of the drive of hinged units do not testify to malfunction too, but it can be the cause of the increased noise. If the increased noise is present, establish a new belt of the drive of hinged units.
Big deposits of a rubber crumb along flutes testify to malfunction, it can be the cause of the increased noise and violation of stability of work of a belt of the drive. If big deposits or excessive noise of a belt are obvious, establish a new belt of the drive of hinged units.
Check a belt for existence of cracks. If the size of damage exceeds an admissible limit, establish a new belt of the drive of hinged units.




Fig. 2.13. Types of damages of a belt of the drive of hinged units


Check a belt for existence of damages. If there are no large fragments of a belt, establish a new belt of the drive of hinged units (fig. 2.13).

Fig. 2.14. Lack of large fragments of a belt of the drive of hinged units