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

MODEL 129.067 as of 6/1/94, 129.076 

Brake disks are unidirectional (arched arrangement of bars for vent openings).

Marking of brake disks through letters ("L" for left, "R" for right) in area of parts number and through a groove on the circumference of the inner brake plate of the right brake disk.