﻿GET_GEVOMechL2_02_01_01_12 - ANIMATION Screen
1
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The check valve is located in the engine cab on the helper’s side (B-side) of the locomotive. 

2
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It is physically a part of the piping that connects the lubricating oil pump outlet pipe and the pre-lube pump outlet pipe. 

3
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The check valve protects the pre-lube pump from excessive reverse oil flow (backflow) from the outlet to the inlet when the pump is not operating.
