Pic. 2.91. Correct fit of the belt in the grooves of the pulleys
Check that the belt is correctly seated in the pulley grooves (pic. 2.91).
Apply a force of 100 N to the reverse (non-working) side of the belt in the middle of the branch between the two pulleys. Measure belt deflection with a tension gauge.
Attention! When installing the V-ribbed belt, make sure that the treadmills of the belt fit correctly in the grooves of the pulleys.
Attention! If during operation the belt «squeals» or slipping, check the pulley contact surfaces and the pulley itself for wear, damage or delamination. Also, check the belt tension.
Pic. 2.92. Attachment drive belt outline
Note. The belt tension is measured in the middle of the belt strand between the indicated pulleys.
Note. When installing a new belt, adjust the tension so that it corresponds to the average value from the allowable range in the column «for new belt» tables 2.11. After installing the belt, let the engine run for 5 minutes or more, then check that the belt tension is correct from the column «when checking» tables 2.11.
Note. When adjusting a used belt or a new belt that has been on the engine for more than 5 minutes, use the ratings given in column «for used belt» tables 2.11.
Note. When periodically checking the belt tension, use the nominal values given in the column «when checking» tables 2.11.
Tension gauge - type «A»
Pic. 2.93. Tension gauge - type «A»
Do not allow the dial of the meter to touch anything when taking measurements (pic. 2.93).
Tension gauge - type «IN»
When measuring, turn the knob «RESET» in the direction indicated by the arrow and set the pointer to the position «RESET».
Pic. 2.94. Tension gauge - type «IN»
If the tension gauge is removed from the belt, the pointer will remain in the position corresponding to the tension value. Read the reading after removing the tension gauge (pic. 2.94).