In a hydraulic tensioning arrangement for tensioning a flexible drive for a camshaft of an internal combustion engine including a crankcase and a cylinder head wherein a main lubricating oil channel extends longitudinally along the inside of the crankcase and has an opening at the front end of the crankcase, a hydraulic housing with a cylinder receiving a plunger is mounted on the front end of the crankcase so as to cover the main lubricating oil channel opening and passage elements are provided for supplying oil from the main lubricating oil channel to the cylinder to bias the plunger against tensioning elements engaging the flexible drive.
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