USS Henley (DD-39)- Lubricating Oil Pumps 4 1-2" X 5" X 6" Vertical Simplex Piston Pump, Sheet 1 - NARA - 75841824.jpg
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USS Henley (DD 39) Lubricating Oil Pumps 4 1 2" X 5" X 6" Vertical Simplex Piston Pump, Sheet 1 NARA 75841824, USS Henley (DD-39), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Henley (DD-39): Lubricating Oil Pumps 4 1/2" X 5" X 6" Vertical Simplex Piston Pump, Sheet 1
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lift pump force pump oil pump lubricated lubricate lubrication embolus piston ring piston vertical section