Step 3 » GENERAL learning environment Category D (D, D1, Tb, Tv)

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 95 of 485

Which of the following malfunctions produce strong vibrations while the car is moving?

A wear of the gearbox pinions;
B breaking of the longitudinal transmission;
C unbalancing of the cardan shafts.

Explanation

The cardan shafts transmit the power from the gearbox to the drive axle and must be balanced to prevent vibrations. If they are unbalanced due to wear, impacts or incorrect installation, a mass imbalance appears which generates strong vibrations while driving, intensifying as the speed increases. These vibrations can affect both comfort and the transmission and suspension components, being one of the most frequent causes of strong vibrations in trucks.

The correct answer is: C


Recommendations:
Mechanics course (knowledge of the main elements) --> Mechanics course

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