English to French Tech/Engineering Manufacturing Process machinery

Système de maintenance préventive :
A hotter bearing on sheave side of motor could indicate over-tightened belts
Sheaves that are hotter around circumference could indicate slipping belts
Belts that do not cool between the motor and blower sheaves could indicate slipping belts
Be sure to re-inspect belts and sheaves after corrective action is taken
While it is not always possible to get a clear view of the belts, thermography can provide valuable information about the condition of the belt and sheave.

Sheave = gaine ?