Gear box device installed in powertrain of motor vehicle, has securing ring that securely connects rotatable pumping element, and coupling unit that is provided with disc carrier for holding clutch plates

摘要

The device has housing portion (11) inside which transmission oil pump (10) having partially rotatable pumping element (12) is inserted. A securing ring (13) is located axially within the housing portion for securely connecting the rotatable pumping element. A coupling unit (14) having disc carrier (15) is provided for holding clutch plates, and the disc carrier is made of single piece.