Install grooved ball bearing in rear transmission housing - AR27.50-P-0600-05A

Press grooved ball bearing (67) into transmission housing using a suitable drift.
Closed side of plastic cage must face towards park pawl gear.
Fit circlip (68) in groove.
Use feeler gage to determine play between grooved ball bearing (67) and circlip (68).
No play should exist between circlip (68) and grooved ball bearing (67). If circlip cannot be fitted, a thinner one must be used. If play exists between circlip and grooved ball bearing, a thicker circlip must be used.

Circlips (68) are available in thicknesses 2.0, 2.1 and 2.2 mm.

Fig 1: Identifying Grooved Ball Bearing And Circlip
Courtesy of MERCEDES-BENZ USA