OPERATION N° D. 540-0 : Checking and adjusting the headlamps and controls. Op. D. 540-0 7 3288 - that the wires of the wing harness do not hinder the movement of the main headlamp. - that the harness is held by the rubber collar on the lower part of the wing, - that the rivets (18) are tight, - that the rod (9) does not touch the sides of the slot (a) in the headlamp case,