Preparing Complete A-Pillar For Installation - Ar63.20-P-1100-09LCA

Model 217.4 

Courtesy of MERCEDES-BENZ USA

The following steps are shown on the left side of the vehicle and must be performed in the same way on the right side in the event of damage.

1. Grind mating surfaces on A-pillar paneling (1) down to bare metal in crosshatched areas.

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

2. Remove grinding dust.
3. Coat spot weld flanges with zinc dust paint.

   Do not coat bonding surfaces with zinc dust paint (area N₁ ).

   Otherwise adhesion problems may occur.

   Observe pretreatment of bonding surfaces.

   Courtesy of MERCEDES-BENZ USA

   Courtesy of MERCEDES-BENZ USA

4. Mark separating point on A-pillar reinforcement (3) and cut (area O).

   Transfer separation point from vehicle.

5. Grind mating surfaces on A-pillar reinforcement (3) down to bare metal in cross-hatched areas.

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

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

   Do not coat bonding surfaces with zinc dust paint (areas N₂ , N₃ and N ₄ ).

   Otherwise adhesion problems may occur.

   Observe pretreatment of bonding surfaces.

   Courtesy of MERCEDES-BENZ USA

8. Mark separating point on offset reinforcement and cut (area P₁ ).

   Transfer separation point from vehicle.

9. Mark separating points on A-pillar inner panel (4) and cut (area P₂ ).

   Transfer separation points from vehicle.

10. Grind mating surfaces on A-pillar inner panel (4) down to bare metal in crosshatched areas.

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

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

    Do not coat adhesive surfaces with zinc dust paint (areas R₁ , R₂ , R₃ , R₄ and R₅ ).

    Otherwise adhesion problems may occur.

    Observe pretreatment of bonding surfaces.

13. Fabricate duplicator (8) from A-pillar inner panel remaining piece (4).

    Dimensions: 

    n = approx. 120 mm

14. Cut duplicator (8) in center (area M).
15. Grind insides of duplicator half down to bare metal.
16. Remove grinding dust.

    Courtesy of MERCEDES-BENZ USA

17. Grind mating surfaces on new mounting console (2) down to bare metal in crosshatched areas.

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

18. Repair bare parts with touchup applicator.
19. Remove grinding dust and drill chips.
20. Coat insides of spot weld flanges with zinc dust paint.

    Do not coat bonding surfaces with zinc dust paint (areas C₁ ).

    Otherwise adhesion problems may occur.

    Observe pretreatment of bonding surfaces.

    Sand down hard solder flanges to bare metal on both sides (areas C₂ ).

    Courtesy of MERCEDES-BENZ USA

    Courtesy of MERCEDES-BENZ USA

21. Sand down mating surfaces on stiffening plate (7) to bare metal in cross-hatched areas.

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

22. Remove grinding dust and drill chips.
23. Repair bare parts with touchup applicator.
24. Coat insides of spot weld flanges with zinc dust paint.