3.16. Check of a state and tension of a belt of the drive of auxiliary units

Too low tension of a belt leads to its increased wear or bystry failure. At too high tension there can be damages of bearings of the units given by this belt. It is necessary to check periodically a condition of a belt, and at detection of defects, to replace it.


  1. Fingers walk on all length of a belt, feeling it on existence of cracks and stratifications.
Wear of edges of edges of a driving belt.
Cross cracks (D) from a reverse side of a belt and peeling of edges (E).
  1. Also check whether is not present on a belt of attritions and sites, zapolirovanny to gloss. The belt should be examined on both sides that means need of its twisting. Be in passing convinced of lack of a rust, cracks and agnails on pulleys. On a working surface of a belt existence of superficial perpendicular cracks is allowed. If these cracks do not overstep the bounds of one edge and not really deep, to replace a belt there is no need.
  2. Make sure of correctness of provision of a belt on pulleys.
  3. Check a tension of a driving belt by means of special adaptation and compare the received result to requirements of Specifications.
  1. Make sure that the mark in a mobile part of a natyazhitel of a belt lay between two tags on a motionless part of a natyazhitel of a belt.
Razlokhmachivaniye of side edges (F), cracks (H) and peeling of side edges (G).
Separation of edges (J), cracks (K).
  1. If necessary replace a driving belt (see the Head Dvigatel).