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Home >> Mercedes Benz >> 2021 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Collision - Side Wall - 205 Chassis 1 Of 2 >> Testing & Repair >> Cut Off B-Pillar - Ar63.20-P-1350-05CLW

Cut Off B-Pillar - Ar63.20-P-1350-05CLW

Model 205.3 

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

The superordinate service document as well as the safety information in the service document must be observed.

G14186850Courtesy of MERCEDES-BENZ USA
  1. Mark separating point on roof frame paneling (6) and separate (area A).

    NOTES Do not cut too deeply.

    Otherwise the components below can be damaged and weakened.

    IMPORTANTDimensions: 

    a1 = approx. 25 mm

    a2 = approx. 10 mm

    a3 = approx. 100 mm

  2. Mark separating point on B-pillar (2) and separate (area B).

    NOTES Do not cut too deeply.

    Otherwise the components below can be damaged and weakened.

    IMPORTANT Dimensions:

    b approx. 40 mm

  3. Expose spot welds on roof frame paneling (6) and cut off (areas L).
  4. Remove roof frame paneling (6).
  5. Expose spot welds on mounting support (4) and cut off (area C).

    IMPORTANT Joint spot welds on panels that are one behind the other must be cut out through two panel thicknesses.

  6. Remove mounting support (4).
    G14186851Courtesy of MERCEDES-BENZ USA
  7. Mark separating points on inner roof frame (3) and separate (areas D, E).

    NOTES Do not make the cuts too deep.

    Otherwise the components below can be damaged and weakened.

    IMPORTANT Dimensions:

    d = approx. 150 mm

    e = approx. 210 mm

  8. Expose spot welds on inner roof frame (3) and cut off (areas F, G).

    IMPORTANT Common spot welds on sheet metal panels located one behind the other must be cut off through two panel thicknesses (area F).

    G14186852Courtesy of MERCEDES-BENZ USA
  9. Separate inert gas weld at inner roof frame (3) (area H).
  10. Heat inner roof frame (3) in cross-hatched areas.

    IMPORTANT Cross-hatched areas are bonded with adhesive.

  11. Remove inner roof frame (3).
    G14186853Courtesy of MERCEDES-BENZ USA
  12. Expose spot welds on B-pillar (2) and cut off (areas I, J).

    IMPORTANT Common spot welds on panels located one behind the other must be cut off through two panel thicknesses (areas I).

  13. Expose spot welds on B-pillar (2) and drill with a Ø 6.5 mm bit (area K).
    G14186854Courtesy of MERCEDES-BENZ USA
  14. Separate inert gas welds on B-pillar (2) (area M).
    G14186855Courtesy of MERCEDES-BENZ USA
  15. Expose spot welds on B-pillar (2) and cut off (areas N, O).

    IMPORTANT Common spot welds on panels located one behind the other must be cut off through two panel thicknesses (areas O).

    G14186856Courtesy of MERCEDES-BENZ USA
  16. Heat B-pillar (2) in crosshatched areas.

    IMPORTANT Cross-hatched areas are bonded with adhesive.

    G14186857Courtesy of MERCEDES-BENZ USA
  17. Heat B-pillar (2) in crosshatched areas.

    IMPORTANT Cross-hatched areas are bonded with adhesive.

  18. Remove B-pillar (2).
    G14186858Courtesy of MERCEDES-BENZ USA
  19. Grind mating surfaces down to bare metal in cross-hatched areas.

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

  20. Remove damaged foam part (5) and remove adhesive residues.
  21. Remove grinding dust and drill chips.
  22. Coat insides of spot weld flanges with zinc dust paint.

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

    Otherwise adhesion problems may occur.

    IMPORTANT Observe pretreatment of bonding surfaces.

    G14186859Courtesy of MERCEDES-BENZ USA
  23. Grind mating surfaces down to bare metal in crosshatched areas.
  24. Remove grinding dust and drill chips.
    G14186860Courtesy of MERCEDES-BENZ USA
    G14186861Courtesy of MERCEDES-BENZ USA
  25. Grind mating surfaces down to bare metal in crosshatched areas.

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

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

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

    Otherwise adhesion problems may occur.

    IMPORTANT Observe pretreatment of bonding surfaces.