Attention: Oil change is carried out when the box is warmed up.
Unscrew the oil filler pipe at the bottom in front of the oil sump and drain the oil into a vessel underneath.
Attention: If the oil has a burnt smell or a blackish color, the box should be repaired.
Unscrew oil sump and clean thoroughly. There are two magnetic washers in the oil sump, on which metal chips are collected. Clean magnets.
Caution: Use only clean, lint-free cloths for cleaning and keep all work steps clean.
Unscrew the mesh sheet at the bottom of the box. For this Requires a wrench for hexagon socket bolts. Pull out the sheet with the grid.
Rinse the mesh in gasoline. At the beginning of resin formation, determined by the brownish burnt on the fly, replace the grid.
Insert mesh with spacer into sheet. Insert the sheet into the box and tighten the screws with a tightening torque of 25 Nm.
Screw on oil sump with magnets. At the same time, fix the mounting bracket so that it presses the crankcase with its short arm. Two corners with straight shoulders are attached to the sides.
Screw the oil filler tube onto the box.
Pour in about 2 liters of ATF.
Attention: Fill only with oils recommended by BMW (see instruction manual).
Check oil level.