﻿GET_GEVOMechL2_06_01_01_04 - ANIMATION Screen
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The purpose of the high adhesion truck, also referred to as the HiAd truck, is to distribute the locomotive’s weight equally over the axles, transferring the tractive effort (pulling force) and braking effort (stopping force) from the locomotive to the rail.

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The truck has three axles, which are individually powered by traction motors.

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Two high adhesion trucks support the entire locomotive.

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The trucks are commonly referred to as the front truck or number 1 truck and the rear truck or number 2 truck.

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A locomotive's two truck assemblies are located directly underneath the locomotive platform.

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The high adhesion truck contains 3 axles and wheel sets.

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A traction motor powers each axle and is coupled to the axle through a U-Tube assembly and a reduction gear arrangement.

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The U-Tube wraps around the axle and is mounted to the traction motor.

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Two roller bearing assemblies within the U-Tube allow the axle to rotate freely.

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The reduction gear arrangement consists of a small pinion gear and a large bull gear.

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A gear case, which is attached to the traction motor, surrounds the pinion gear to keep out dirt and moisture and to retain necessary gear lubricant.

