﻿GET_GEVOMechL2_09_01_01_05 - ANIMATION Screen
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The 5GMG203, 5GMG205, and 5GMG206 alternators all consist of two main sub-assemblies: the Traction Alternator (TA) and the Auxiliary Alternator (AA).

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The TA produces the electrical energy required to power the traction motors, while the AA produces the electrical energy required to power the locomotive systems.

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Both assemblies are salient-pole, 3-phase, Y-connected machines mounted on a common frame in the blower cab.

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They are configured as a single unit attached to the rear, #1 end of the diesel engine.

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For the specific purposes of this module, we will discuss both the TA and AA as a single, unified machine.

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The alternator is a single bearing machine with the rotor mechanically coupled to the flex plate on the engine’s crankshaft.

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Approximately half of the alternator’s weight is supported by the collector end roller bearing, while the other half is supported by the crankshaft.

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The alternator can be removed as either a separate component or along with the diesel engine.

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After the alternator is coupled to the diesel engine, it is important to ensure that the web deflection of the crankshaft is within specific limits.

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Otherwise, too much weight on the end of the crankshaft may cause excess crankshaft stress and lead to damage.
