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Home >> Mercedes Benz >> 2021 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Collision >> Body Panels >> Collision - Side Wall - 205 Chassis 2 Of 2 >> Testing & Repair >> Install And Weld In B-Pillar - Ar63.20-P-1350-06LW

Install And Weld In B-Pillar - Ar63.20-P-1350-06LW

Model 205.0/1/2 

Model 253 

Model 293 

Modification notes 

30.11.2015 Countersunk head rivet 0 6.4x14 replaced by countersunk blind rivet Ø 6.4x15.5. Operation step 12

IMPORTANT The following operation steps are shown on the left side of the vehicle on MODEL 205.0 and must be performed analogously on the right side in the event of damage.

G14186893Courtesy of MERCEDES-BENZ USA
  1. Install B-pillar reinforcement (2) with portal bracket, fit and fix in place.

    IMPORTANT Use spacers.

  2. Drill Ø 6.7 mm rivet holes in B-pillar reinforcement (2) (area A).
  3. Model 253

    Model 293

    Drill Ø 6.7 mm rivet holes in B-pillar reinforcement (2) (areas B).

  4. Model 253

    Model 293

    Countersink rivet holes (areas A and B).

  5. Remove portal bracket and B-pillar reinforcement (2).
  6. Deburr rivet holes on B-pillar reinforcement (2) and body on both sides.
  7. Remove drilling chips.
  8. Apply sealant to foam parts on A-pillar reinforcement (2) in crosshatched areas.
    G14186894Courtesy of MERCEDES-BENZ USA
    G14186895Courtesy of MERCEDES-BENZ USA
  9. Apply 2-component adhesive to body in crosshatched areas.

    IMPORTANT Observe pretreatment of bonding surfaces and manufacturer's specifications for drying and processing time of 2-component adhesive.

    G14186896Courtesy of MERCEDES-BENZ USA
  10. Install B-pillar reinforcement (2) with portal bracket.

    IMPORTANT Use spacers.

  11. Model 205.0/1/2

    Rivet B-pillar reinforcement (2) with 0 6.5x12.5 rivets (area D).

  12. Model 253

    Model 293

    Rivet B-pillar reinforcement (2) with 0 6.4x15.5 countersunk blind rivet (area C and D).

  13. B-pillar reinforcement (2) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (areas E).
  14. B-pillar reinforcement (2) SHIELDED GAS SEAM WELD (areas F).

    IMPORTANT Inert gas weld in intervals and allow welding area to cool down in between. Reduces heat distortion.

  15. Grind inert gas welds down flat on B-pillar reinforcement (2) (areas F).

    IMPORTANT Grind down flat on contact surfaces on B-pillar paneling and beaded area only.

  16. Clean weld joints no longer accessible after installing A-pillar reinforcement and coat with zinc dust paint.
    G14186897Courtesy of MERCEDES-BENZ USA
  17. B-pillar reinforcement (2) SHIELDED GAS SEAM WELD (area G).
    G14186898Courtesy of MERCEDES-BENZ USA
  18. Install B-pillar paneling (1, fit and fix in place.
  19. Drill Ø 6.7 mm rivet holes in B-pillar paneling (1) (area H).
  20. Remove B-pillar paneling (1).
  21. Deburr rivet holes on B-pillar paneling (1) and body on both sides.
  22. Remove drilling chips.
  23. Model 205.0/1/2

    Apply sealant to foam parts in crosshatched areas (areas I).

  24. Model 205.0/1/2

    Apply 2-component adhesive in crosshatched area on body (area J).

    IMPORTANT Observe pretreatment of bonding surfaces and manufacturer's specifications for drying and processing time of 2-component adhesive.

    G14186899Courtesy of MERCEDES-BENZ USA
  25. Model 253

    Model 293

    Apply sealant to foam parts in crosshatched areas (areas P).

  26. Model 253

    Model 293

    Apply 2-component adhesive in crosshatched area on body (areas Q).

    IMPORTANT Observe pretreatment of bonding surfaces and manufacturer's specifications for drying and processing time of 2-component adhesive.

    G14186900Courtesy of MERCEDES-BENZ USA
  27. Install B-pillar paneling (1) and fix in place.
  28. Rivet B-pillar paneling (1) with Ø 6.4x12 rivets (area K).
  29. B-pillar paneling (1) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (areas L).
  30. B-pillar paneling (1) SHIELDED GAS SEAM WELD (areas M).

    IMPORTANT Inert gas weld in intervals and allow welding area to cool down in between. Reduces heat distortion.

  31. Grind inert gas welds down flat (areas M).
  32. Solder surfaces on B-pillar paneling (1) with body solder and smooth (areas M).
  33. Remove solder residues and grinding dust.
    G14186901Courtesy of MERCEDES-BENZ USA