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H

Heavy-duty Vehicle:

It is a vehicle (truck) weighing from 26,001 to 33,001 lbs. Also incorporated off-highway trucks.

 

Helical Gear:

A gear in which the teeth are cut at an angle to the shaft. The benefit is that there are frequently two teeth meshing at all times, creation for smoother and quieter operation.

 

Headlight:

A headlight or headlamp is a lamp, naturally attached to the front of a vehicle such as a car, with the reason of illuminating the road ahead during periods of low visibility, such as night or precipitation.

 

Hydraulic:

A mechanical operation base on incompressibility of liquids, generally oil and also sometimes water, and their ability to offer resistance when being enforced into a small cylinder or during an orifice, thereby transmitting an increase in applied force. Hydraulic brakes and the clutches use this principle.