Float, function - GF27.10-P-5107-04G

Transmission 722.6 

Fig 1: Identifying Float Function

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function 

With low oil levels, the lubricating oil which flows constantly out of the gearset, flows back to oil gallery (A) though the opening (46). If the oil level rises, the oil presses the float (45) against the housing.

The float (45) therefore separates the oil gallery (A) from the gearset chamber (B). The lubricating oil which continues to flow out of the gearsets is thrown against the housing wall, incorporated by the rotating parts and flows back into the oil gallery (A) through the upper opening (arrow).