Inserting and measuring multiple-disc pack B3 - AR27.50-P-0780-11A

Place new friction plates in ATF fluid 1 hour before installation.

Fig 1: Identifying Different Toothed Gear Thickness

Courtesy of MERCEDES-BENZ USA

1. Assemble lamella for the multi-disk brake B3 in the sequence shown in the picture and insert individually.
2. Using a feeler gage, measure the clearance "L" at three points between the snap ring (133a) and externally toothed plate (133c).

   For the measuring procedure the snap ring (133a) must abut the upper contact surface of the groove in the external plate carrier.

3. with snap ring (133a), adjust if necessary.

   Snap rings are available in thicknesses of 3.2, 3.5, 3.8, 4.1, 4.4 and 4.7 mm

   Fig 2: Measuring Clearance L At Three Points Between Snap Ring And Externally Toothed Plate

   Courtesy of MERCEDES-BENZ USA