Remove/install oil filler pipe - AR27.10-P-0500-04A

Unscrew bolts (62, 63, 64)
Release wiring harness from oil filler pipe (61)
Use a suitable tool to lever the oil filler tube (61) out of the housing bore of the transmission housing.
Installation: Replace O-ring on oil filler pipe (61).

Fig 1: Identifying Oil Filler Pipe Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
1. Remove exhaust gas recirculation pipe (51) on exhaust manifold.
  Engine 606.964.
  
  The exhaust gas recirculation pipe (51) need only be removed in a case of total removal. The oil filler tube (61) is only swung to one side for work such as transmission removal.
2. Remove transverse exhaust pipe.
  Engines 112, 113 except engine 113.993.
Install in the reverse order.

Fig 2: Identifying Exhaust Gas Recirculation Pipe
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.