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A-Pillar Complete Install And Weld In - Ar63.20-P-1100-10MFA

Model 118.3/6 

Model 177.0/1/9 

Model 247.0/6/7 

MODIFICATION NOTES

21.08.2020 Work procedure revised The whole document  
Fig 1: Side Portal Frame (210 589 17 23 00)
G13669255Courtesy of MERCEDES-BENZ USA

IMPORTANT

Refer to the superordinate service document for further information. Observe safety information in the superordinate service document.

IMPORTANT

The next steps are shown on the left side of the vehicle in model 177.0. In case of damage on the right side of the vehicle, these steps must be performed analogously.

G14689311Courtesy of MERCEDES-BENZ USA
  1. Install and fit A-pillar inner part (2).
  2. Install and fit A-pillar reinforcement (1) using the SPECIAL TOOL side portal frame and the portal straightener.

    IMPORTANT

    Use spacers.

  3. Remove portal straightener and A-pillar reinforcement (1).
  4. Remove A-pillar inner part (2).
  5. Apply 2-component adhesive to the body in the cross-hatched areas (areas A and B).

    IMPORTANT

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

  6. Install and fix in place A-pillar inner part (2).
  7. A-pillar inner part (2) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (areas C1 , C2 , C3 , C4 and C5 ).
  8. A-pillar inner part (2) SHIELDED GAS SEAM WELD (areas D1 and D2 ).

    IMPORTANT

    Perform inert gas welding at intervals and allow to cool down in between. This reduces heat distortion.

  9. Brush down inert gas welds (areas D1 and D2 ) and grind them flat.
    G14689312Courtesy of MERCEDES-BENZ USA
    G16051157Courtesy of MERCEDES-BENZ USA
  10. Install half of connecting panel (3) in roof frame reinforcement (4), fit and fix in place.

    IMPORTANT

    Observe dimension (A).

  11. Drill rivet holes in roof frame reinforcement (4) and connecting panel (3) with Ø 6.7 mm (areas E and E1 ).

    NOTES During drilling, ensure that drill bit does not bore too far into connecting panel (3).

    A-pillar inner part (2) will otherwise be damaged.

    IMPORTANT

    Observe dimensions (b1 , b2 ).

  12. Fix connecting panel (3) in place again using manual temporary fasteners and align.

    IMPORTANT

    Use holes (areas E and E1 ).

  13. Drill rivet holes in roof frame reinforcement (4) and connecting panel (3) with Ø 6.7 mm (areas F and F1 ).

    NOTES During drilling, ensure that drill bit does not bore too far into connecting panel (3).

    A-pillar inner part (2) will otherwise be damaged.

    IMPORTANT

    Observe dimensions (c1 , c2 ).

  14. Install A-pillar reinforcement (1) with portal straightener, fit and fix in place.

    IMPORTANT

    Use spacers.

  15. Drill rivet holes in A-pillar reinforcement (1) and connecting panel (3) with Ø 6.7 mm (areas G, G1 , H and H1 ).

    NOTES During drilling, ensure that drill bit does not bore too far into connecting panel (3).

    A-pillar inner part (2) will otherwise be damaged.

    IMPORTANT

    Observe dimensions (d1 , d2 , e1 , e2 ).

  16. Remove A-pillar reinforcement (1) with the portal straightener.
  17. Remove connecting panel (3).
  18. Deburr rivet holes in A-pillar reinforcement (1), connecting panel (3) and in roof frame reinforcement (4) on both sides.
    G14689314Courtesy of MERCEDES-BENZ USA
  19. Apply 2-component adhesive to connecting panel (3) in cross-hatched area.

    IMPORTANT

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

  20. Install half of connecting panel (3) in roof frame reinforcement (4), fit and fix in place.
    G14689315Courtesy of MERCEDES-BENZ USA
  21. Clean contact surfaces of foam part on A-pillar inner part (2) and apply sealant in the cross-hatched area (area J).
  22. Apply 2-component adhesive to the body in the cross-hatched areas (areas I1 , I2 and I3 ).

    IMPORTANT

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

  23. Install A-pillar reinforcement (1) with the portal straightener and fix in place.

    IMPORTANT

    Use spacers.

  24. Rivet connecting panel (3), A-pillar reinforcement (1) and roof frame reinforcement (4) with rivets Ø 6.5x12.5 (areas K).
    G14689316Courtesy of MERCEDES-BENZ USA
  25. A-pillar reinforcement (1) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (area L).
    G14689317Courtesy of MERCEDES-BENZ USA
  26. A-pillar reinforcement (1) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (areas M1 and M2 ).
  27. A-pillar reinforcement (1) POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD (areas N1 , N2 and N3 ).
  28. A-pillar reinforcement (1) SHIELDED GAS SEAM WELD (area O1 ).

    IMPORTANT

    Perform inert gas welding at intervals and allow to cool down in between. Reduces heat distortion.

  29. Grind inert gas welds on A-pillar reinforcement (1) flat (area O1 ).

    IMPORTANT

    Only grind flat on beaded areas and contact surfaces of A-pillar reinforcement (1) (area O1 ).

  30. Clean welding areas which are no longer accessible after installing upper front longitudinal member and A-pillar paneling and coat with zinc dust paint.
  31. Remove portal straightener and SPECIAL TOOL side portal frame.
    G14689318Courtesy of MERCEDES-BENZ USA