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Home >> Mercedes Benz >> 2022 >> CLA250 Base >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Collision - Side Wall - 118 Chassis >> Side Wall Body Repair >> Inner B-Pillar Separation - Ar63.20-P-1350-01MFB

Inner B-Pillar Separation - Ar63.20-P-1350-01MFB

Model 118.3/6 

IMPORTANT

The next steps are shown on the left side of the vehicle. This must be similarly performed for damage to the right side of the vehicle.

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

  1. Mark separating points on inner B-pillar (1) (area H).

    IMPORTANT

    In this connection, observe dimension (b).

  2. Cut separating points at inner B-pillar (1) (area H).

    NOTES Do not cut too deeply.

    Otherwise the components below can be damaged and weakened.

    G16063609Courtesy of MERCEDES-BENZ USA
  3. Mark separating points on inner B-pillar (1) (areas E, D).

    IMPORTANT

    Observe dimensions (a) here.

  4. Cut separating points at inner B-pillar (1) (areas E, D).

    NOTES Do not make the cuts too deep.

    Otherwise the components below can be damaged and weakened.

    G16063610Courtesy of MERCEDES-BENZ USA
  5. Expose lower spot welds at inner B-pillar (1) (area C).
  6. Cut off lower spot welds at inner B-pillar (1) (area C).
  7. Expose upper spot welds at inner B-pillar (1) (areas F, G).
  8. Cut off upper spot welds at inner B-pillar (1) (areas F, G).
  9. Drill through spot welds at inner B-pillar (1) with Ø 6.5 mm (areas A, B).
  10. Expose spot welds at B-pillar reinforcement (2) (areas I, J).
  11. Cut off spot welds at B-pillar reinforcement (2) (areas I, J).
  12. Remove B-pillar reinforcement (2).
    G15489464Courtesy of MERCEDES-BENZ USA
  13. Heat inner B-pillar (1) in cross-hatched areas (areas K).
  14. Remove inner B-pillar (1).
    G15489465Courtesy of MERCEDES-BENZ USA
    G15489466Courtesy of MERCEDES-BENZ USA
  15. Grind mating surfaces down to bare metal in cross-hatched areas.

    IMPORTANT

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

  16. Remove grinding dust and drill chips.
  17. Apply zinc dust paint to insides of spot weld flanges.

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

    Otherwise, adhesion problems will occur.

    IMPORTANT

    Observe pretreatment of bonding surfaces.