Checking and adjusting the clearance between flange 33 and bevel gear of drive shaft 17 using a retaining ring
Check the clearance between the flange (33) and the bevel gear of the drive shaft (17). If necessary, install a thinner or thicker retaining ring (30a). The thickness of the retaining ring varies from 1.4 mm to 2.7 mm in 0.05 mm increments. Clearance between the flange and the differential housing: 0.03-0.3 mm.
(Full article available on the resource: MERCEDESMAN.ru)