Prepare Rear CROSSMEMBER For Installation - Ar64.20-P-1100-02SR

MODEL 453 

1. Grind mating surfaces on rear crossmember (1) down to bare metal in crosshatched areas.

   Sand down spot weld flanges to bare metal on both sides.

   Fig 1: Locating Grind Areas

   Courtesy of MERCEDES-BENZ USA

   Shown on MODEL 453.3 

2. Remove shavings and drill chips with wet/dry vacuum cleaner.
3. Coat insides of spot welding flanges with zinc dust paint.