Remove rear wheel well inner section - AR63.10-P-0610-01CW

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.

The following operation steps are shown on model 204.0.

Scribe separation point on side longitudinal member (1) at Y-marking (arrow) (area A).
Cut side longitudinal member (1) at separation point (area A).
Expose spot welds on side longitudinal member (1) (areas B, C and D).
Cut out spot welds on side longitudinal member (1) (areas B, C and D).

Fig 1: Identifying Longitudinal Member Spot Welding Areas & Separation Points
Courtesy of MERCEDES-BENZ USA
Coarsely scribe separation points on wheel well inner section (2) (areas E and F).
Coarsely cut wheel well inner section (2) at separation point (areas E and F).
Expose spot welds on wheel well inner section (2) (area G).
Cut out spot welds on wheel well inner section (2) (area G).

Fig 2: Identifying Wheel Well Inner Section Spot Welding Areas & Separation Points
Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Spot Welding Areas On Floor Crossmember
Courtesy of MERCEDES-BENZ USA
Expose spot welds on loading floor crossmember (3) (areas H, I and J).
Cut out spot welds on loading floor crossmember (3) (areas H, I and J).
Remove section from loading floor crossmember (3).

Fig 4: Identifying Floor Crossmember Spot Welding Areas & Brazed MIG Seams
Courtesy of MERCEDES-BENZ USA
Expose spot welds and brazed MIG seams on load compartment crossmember (3) (areas K, K1, L, M, M1, N and O).
Cut out spot welds on loading floor crossmember (3) (areas K, M, N and O).
1. 14.1 Model 204: Cut out spot welds on loading floor crossmember (3) (areas K 1 and M 1).
2. 14.2 Model 212.0: Drill Ø 6.7 mm spot welds on loading floor crossmember (3) (areas K ₁ and M ₁ ).
  On model 212.0, the loading floor crossmember (3) is located below the connecting flange (arrows).
3. 15 Cut brazed MIG seams on loading floor crossmember (3) (area L).
  Spot welds may be present in area L depending on the vehicle variant.
4. 16 Remove loading floor crossmember (3)
5. 17 Expose spot welds on front rear axle crossmember (7) and vehicle floor (7.1) (areas R, S, S₁ , S₂ , S₃ and S ₄ ).
6. 18 Cut out spot welds on front rear axle crossmember (7) (areas R, S and S ₂ ).
  Mill off spot weld through two sheet metal thicknesses (arrow).
7. 19 Drill Ø 6.7 mm spot welds on front rear axle crossmember (7) and vehicle floor (7.1) (areas S1 and S 3).
8. 20 Remove front rear axle crossmember (7).
9. 21 Drill Ø 8 mm holes in vehicle floor (7.1) (area S₄ ).
  
  Fig 5: Identifying Spot Welding Areas On Front Rear Axle Crossmember
  Courtesy of MERCEDES-BENZ USA
10. 22 Expose spot welds and brazed MIG seams on upper rear axle crossmember (5) (areas P, Q, T, U and arrows).
11. 23 Cut brazed MIG seams on upper rear axle crossmember (5) (area Q and arrows).
12. 24 Cut out spot welds on upper rear axle crossmember (5) (areas P, T and U).
13. 25 Remove upper rear axle crossmember (5).
  
  Fig 6: Identifying Spot Welding Areas On Upper Rear Axle Crossmember
  Courtesy of MERCEDES-BENZ USA
  
  Fig 7: Identifying Spare Wheel Well Locking Lug And Rear Axle Crossmember Spot Welding Areas & Brazed MIG Seams
  Courtesy of MERCEDES-BENZ USA
14. 26 Expose spot welds on brazed MIG seams on rear axle crossmember (6) and spare wheel well locking lug (4) (areas V, W, X, Y, Z, AA, AB, AC, AD and arrow).
  On model 212.0 spot welds are not present in area W on the spare wheel well locking lug (4) due to the structural shape.
15. 27 Cut brazed MIG seams on rear axle crossmember (6) (areas Y, Z and AA).
16. 28 Cut out spot welds on rear axle crossmember (6) and spare wheel well locking lug (4) (areas V, W, X, AB, AC, AD and arrow).
  Cut out spot welds from bottom (arrow).
  
  On model 212.0 spot welds are not present in area W on the spare wheel well locking lug (4) due to the structural shape.
17. 29 Remove rear axle crossmember (6).
18. 30 Expose spot welds on wheel well inner section remaining sections (9 and 10) and vehicle floor (11) (areas AH, AI, AJ, AK and AL).
19. 31 Cut out spot welds on wheel well inner section remaining sections (9 and 10) and vehicle floor (11) (areas AH, AI, AJ, AK and AL).
  
  Fig 8: Identifying Spot Welding Areas On Wheel Well Inner Section And Vehicle Floor
  Courtesy of MERCEDES-BENZ USA
  
  Fig 9: Identifying Inner Side Longitudinal Member Spot Welding Areas & Scribe Separation Points
  Courtesy of MERCEDES-BENZ USA
  
  Dimension:
20. 32 Scribe separation point on inner side longitudinal member (8) (area AE).
  On model 212.0 scribe offset reinforcement (12) in area AE.
21. 33 Cut inner side longitudinal member (8) at separation point (area AE).
  On model 212.0 cut offset reinforcement (12) in area AE additionally.
  
  Perform operation steps, 34 and 35 are required only on model 204.
22. 34 Expose spot welds on inner side longitudinal member (8) (areas AF and AG).
23. 35. Cut out spot welds on inner side longitudinal member (8) (areas AF and AG).
24. 36 Remove inner side longitudinal member remaining section (8.1) and wheel well inner section remaining sections (9 and 10).
  Perform operation steps 37, 38 and 39 are only performed on model 212.0.
25. 37 Scribe separation point on offset reinforcement (12) (area AM).
  Scribe separation point on offset reinforcement (12) according to Y-markings (arrows).
26. 38. Cut offset reinforcement (12) at separation point (area AM).
27. 39. Remove offset reinforcement section (12.1).
  
  Fig 10: Identifying Mating Surfaces
  Courtesy of MERCEDES-BENZ USA
28. 40 Grind mating surfaces on body down to bare metal in cross-hatched areas.
  On model 212.0 additionally grind offset reinforcement (12) down to bare metal in crosshatched areas.
  
  Fig 11: Identifying Grinding Areas
  Courtesy of MERCEDES-BENZ USA
29. 41 Grind mating surfaces on body down to bare metal in cross-hatched areas.
  Grind spot weld flanges down to bare metal on both sides.
30. 42 Remove shavings and drill chips.
31. 43 Coat insides of spot weld flanges with zinc dust paint.