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Install rear longitudinal member - AR64.20-P-1200-24GZ

NOTE Measures for preventing damage to vehicles or components when performing arc welding work All models AH00.00-N-0005-01A
COMMERCIALLY AVAILABLE TOOLS

Number Designation
WH58.30-Z-1002-02A Hole punching pliers, dia. 7 mm
WH58.30-Z-1003-02A Clamping pliers
WORKSHOP EQUIPMENT

WE58.40-Z-1001-02A Inert gas welder
WE58.40-Z-1002-02A Spot welder
WE58.40-Z-1001-03A Drill (electric/pneumatic)
WE58.40-Z-1005-03A Wet/dry vacuum cleaner
Fig 1: Identifying Rear Longitudinal Member, C-Pillar Inner Section And C-Pillar Inner Section End Plate
G05259472Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  1. Fit main floor (11)
  2. Fit rear longitudinal member (6), C-pillar inner section (7) and C-pillar inner section end plate (8) and fasten with clamping pliers COMMERCIALLY AVAILABLE TOOLS .
  3. Check alignment in areas I, BM and BN.
  4. Weld in area BN with SHIELDED GAS PLUG WELD .
  5. Remove rear longitudinal member (6), C-pillar inner section (7) and C-pillar inner section end plate (8) from vehicle.
  6. Punch holes for INSPECT in area AG.

    IMPORTANT Use dia. 7 mm hole punching pliers.

  7. Weld in area BO with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  8. Fit rear longitudinal member (6), C-pillar inner section (7) and C-pillar inner section end plate (8).
  9. Weld in areas J, BM and BP with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  10. Weld in areas I and AH with SHIELDED GAS PLUG WELD .
  11. Clean welds.
    Fig 2: Identifying Rear Longitudinal Member, C-Pillar Inner Section And C-Pillar Inner Section End Plate
    G05259473Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  12. Weld in areas BQ and D with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  13. Weld in areas E, G, H and BR with SHIELDED GAS PLUG WELD .
  14. Clean welds.
  15. Fit crossmember in front of rear axle and crossmember behind rear axle.
  16. Weld in areas AD, AE, BS, and BT with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  17. Clean welds.
    Fig 3: Identifying Weld In Areas E, G, H And BR With Shielded Gas Plug Weld
    G05259474Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
    Fig 4: Identifying Weld Areas M To O
    G05259475Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  18. Weld in areas M to O with SHIELDED GAS SEAM WELD .
  19. Weld in area P with SHIELDED GAS PLUG WELD .
  20. Weld in areas BU, K and BV with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  21. Drill holes for SHIELDED GAS PLUG WELD in area AM.

    IMPORTANT Use dia. 7 mm drill bit.

  22. Weld in area AM with SHIELDED GAS PLUG WELD .
  23. Clean welds.
  24. Fit right rear longitudinal member end plate (3), rear floor (4) and left rear longitudinal member end plate (9).
  25. Fasten left rear longitudinal member end plate and right rear longitudinal member end plate with clamping pliers COMMERCIALLY AVAILABLE TOOLS .
  26. Drill holes for SHIELDED GAS PLUG WELD in areas AV and AN.

    IMPORTANT Use dia. 7 mm drill bit.

    Fig 5: Identifying Weld In Areas BW, BX, BZ, BY, CA And CB
    G05259476Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  27. Weld in areas BW, BX, BZ, BY, CA and CB with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  28. Weld in areas AN, AP, AS and AV with SHIELDED GAS PLUG WELD .
  29. Clean welds.
  30. Weld in areas CC, CD, CE, CF, CG and CH with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  31. Weld in areas BK, BF, BD and BI with SHIELDED GAS PLUG WELD .
  32. Weld in areas BL, BG, BH and BJ with SHIELDED GAS SEAM WELD .
  33. Clean welds.
    Fig 6: Identifying Weld Areas CI And CJ
    G05259477Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  34. Weld areas CI and CJ with 35 POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  35. Weld in area BB with SHIELDED GAS PLUG WELD .
  36. Clean welds.
    Fig 7: Identifying Weld In Areas CK, CL, CM, And CN
    G05259478Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  37. Weld in areas CK, CL, CM, and CN with POLARIZATION RESISTANCE SINGLE-ROW SPOT WELD .
  38. Weld areas AL, AZ and BC with SHIELDED GAS PLUG WELD .
  39. Clean welds.
    Fig 8: Identifying Weld In Areas CK, CL, CM, And CN
    G05259479Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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