Remove rear longitudinal member section - AR64.20-P-1260-01CW

WARNING: This page is about a different car, the 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Rear Longitudinal Member And Locking Lug Welding & Cutting Areas

Courtesy of MERCEDES-BENZ USA

Illustrated on model 204.0

Expose MIG soldered seams and spot welds on rear longitudinal member (1) and rear locking lug (2) (areas A, B, C, D and E).
Separate MIG soldered seams on rear longitudinal member (1) (area D).
Cut out spot welds using spot weld milling cutter or ball cutter (areas A, B, C and E).
Cut through two panel thicknesses (area B).

Fig 2: Identifying Rear Longitudinal Member And Locking Lug Welding Areas
Courtesy of MERCEDES-BENZ USA

Illustrated on model 204.0
Expose MIG soldered seams and spot welds on rear longitudinal member (1) and rear locking lug (2) (areas F, G, H, I, J and K).
Separate MIG soldered seams on rear longitudinal member (1) (area H).
Cut out spot welds using spot weld milling cutter or ball cuter (areas F, G, J and K).
Cut out spot weld from inside (area G). Cut through two sheet metal layers (area K).
Remove damaged rear longitudinal member (1) with rear locking lug (2).

Fig 3: Identifying Grinding Area Of Rear Longitudinal Member
Courtesy of MERCEDES-BENZ USA

Illustrated on model 204.0
Grind mating surfaces on body down to bate metal in cross-hatched areas with shank brush.
Grind spot weld flanges down to bare metal on both sides. Completely remove remaining MIG soldered seams.
Remove sanding dust using wet/dry vacuum cleaner.
Coat insides of spot weld flanges with zinc dust paint.