Prepare Front Roof Frame For Installation - Ar65.20-P-1006-04GQ

Grind mating surfaces on front roof frame (1) and inner front reinforcement (2) down to bare metal in crosshatched areas.
Grind spot weld flanges down to bare metal on both sides.
Coat insides of spot weld flange on front roof frame (1) and inner front reinforcement (2) with zinc dust paint.

Courtesy of MERCEDES-BENZ USA