Partially Prepare Longitudinal Member Inner Shell On Entrance - Ar63.30-P-1143-02SRA

Model 453.3/4 

1. Grind mating surfaces on longitudinal member inner shell on entry (3) and reinforcement (2) down to bare metal in crosshatched areas.

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

   Fig 1: Locating Grinding Area

   Courtesy of MERCEDES-BENZ USA
2. Remove grinding dust.
3. Coat insides of spot weld flanges with zinc dust paint.
4. Mark separating points on rear wheel well (1) and cut (areas F ₁ and F ₂ ).

   Transfer position on separation points from vehicle.

   Fig 2: Locating Areas F 1, F 2 & H

   Courtesy of MERCEDES-BENZ USA
5. Expose spot welds on rear wheel well (1) and cut out (area H).

   Cut out spot welds on inside so that rear wheel well (1) cannot be damaged.

6. Remove rear wheel well (1) from section (1.1).
7. Grind mating surfaces on rear wheel well (1) down to bare metal in crosshatched areas.

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

8. Remove grinding dust and drill chips.
9. Coat insides of spot weld flanges with zinc dust paint.