Notes on installation of brake discs - AH42.10-P-9406-04A

Model 129.067 as of 01.06.1994, 129.076 

Brake discs are linked to the direction of rotation (curved arrangement of the webs for ventilation openings).

The brake discs are marked with the letters ("L" for left, "R" for right) in the area of the part number and by a groove on the periphery of the inner brake ring of the right-hand brake disc.