Does your gearbox have a sealed or open input shaft bearing? This bearing is often above the gearbox oil level and must be greased if it's an open bearing. Manufacturers may ship the gearbox with a plug where the grease fitting is needed to prevent damage during shipping. The manufacturer may also change the input shaft bearing design without notification. No longer receiving a plastic bag with the grease fitting included with a replacement gearbox may be a clue to a design change. Check the manual included with the gearbox to see if lubrication needs have changed. (Lanse Carpenter, Celanese)
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