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Home >> Mercedes Benz >> 2009 >> SL550 >> Repair and Diagnosis >> Collision >> General Collision Information >> Rear Wall & Rear End >> Testing & Repair >> Partially replace bottom rear center section - AR64.20-P-1050R >> Separate rear center section - AR64.20-P-1050-01R

Separate rear center section - AR64.20-P-1050-01R

Fig 1: Identifying Weld Spot Miller (201 589 00 51 00)
G05074616Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Protective Mat (230 589 00 98 00)
G05074617Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Welding Bead Trap (230 589 01 98 00)
G05074618Courtesy of MERCEDES-BENZ USA
COMMERCIALLY AVAILABLE TOOLS

Number Designation
WH58.30-Z-1006-01A Vario Drill WS 91 spot weld removing tool
WH58.30-Z-1001-03A Round wire brush, braided, dia. 70 mm
WH58.30-Z-1024-04A Abrasive disk, dia. 115 mm, 80 m/s (max. 13, 250 RPM)
WORKSHOP EQUIPMENT

WE58.40-Z-1001-03A Drill (electric/pneumatic)
WE58.40-Z-1002-03A Straight grinder (electric/pneumatic)
WE58.40-Z-1003-03A Angle grinder (electric/pneumatic)
WE58.40-Z-1005-03A Wet/dry vacuum cleaner
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1001-07A Zinc dust paint suitable for spot welding A 000 986 34 42
  1. Expose spot welds (areas A and B).
  2. Cut spot welds out with SPECIAL TOOL spot weld cutter (areas A and B).
    Fig 4: Identifying Welding Spots Areas
    G05074619Courtesy of MERCEDES-BENZ USA
  3. Expose spot welds (areas C, D, E and F).
  4. Cut spot welds out with SPECIAL TOOL spot weld cutter (areas C, D, E and F).
  5. Remove bottom rear center section.
    Fig 5: Identifying Welding Spots Areas
    G05074620Courtesy of MERCEDES-BENZ USA
  6. Grind connection surfaces down to bare metal in shaded areas.

    IMPORTANT Grind spot welding flange down to bare metal on both sides.

  7. Remove grinding and drilling chips using wet/dry vacuum cleaner.
  8. Coat inside of spot welding flanges and rivet connections with zinc dust.
    Fig 6: Identifying Shaded Areas
    G05074621Courtesy of MERCEDES-BENZ USA