Remove Longitudinal Member At Rear - Ar64.20-P-1200-22MFB

Model 177.1/9 

with code U54 (Compound-link axle) 

with code U55 (Multi-link axle) 

The following operation steps are shown on the left side of the vehicle. In case of damage on the right side of the vehicle, these steps must be performed analogously.

Refer to the superordinate service document for further information.

The safety information in the superordinate service document must be observed.

1. Mark separating point on rear seat reinforcement (3) and cut (area A).

   Do not cut too deeply.

   Otherwise the component parts below can be damaged and weakened.

   Dimensions  :

   a = 40 mm

2. Expose spot welds on rear seat reinforcement (3) and cut off (areas B₁ , B₂ , B₃ , B₄ , and B₅ ).
3. Remove rear seat reinforcement (3).

   Courtesy of MERCEDES-BENZ USA

   Courtesy of MERCEDES-BENZ USA

4. Expose spot welds on rear bench seat mount (6) and cut off (areas C₁ , C₂ , and C₃ ).
5. Expose spot welds on rear bench seat mount (6) and cut off through two panel thicknesses (area D₃ ).
6. Remove rear bench seat mount (6).
7. Expose spot welds on cover (4) and cut off (areas D₄ , D₅ , D₆ , D₇ , D₈ , D₉ , D₁₀ , D₁₁ , D₁₂ , and D₁₃ ).
8. Expose spot welds on cover (4) and cut off through two panel thicknesses (areas D₁ and D₂ ).
9. Heat cover (4) in the cross-hatched areas.

   Cross-hatched areas are bonded with adhesive.

10. Remove cover (4).

    Courtesy of MERCEDES-BENZ USA

    Courtesy of MERCEDES-BENZ USA

11. Expose spot welds on rear longitudinal member (1) and cut off (areas E₁ and E₂ ).
12. Expose spot welds on rear longitudinal member (1) and cut off from the bottom (area E₇ ).
13. Expose spot welds on rear longitudinal member (1) and drill through with a diameter of 6.5 mm (area F₁ ).
14. Expose spot welds on cover (5) and cut off (areas E₃ , E₄ , E₅ , and E₆ ).
15. Expose spot welds on cover (5) and drill through with a diameter of 6.5 mm (area F₂ ).

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16. Expose spot welds on the connection (2) and cut off (areas G₁ , G₂ , and G₃ ).
17. Heat rear longitudinal member (1) in the cross-hatched areas.

    Cross-hatched areas are bonded with adhesive.

18. Remove rear longitudinal member (1) with connection (2).

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19. Sand down mating surfaces to bare metal in cross-hatched areas.
20. Remove grinding dust and drill chips.
21. Apply zinc dust paint to the mating surfaces.

    Do not coat bonding surfacers with zinc dust paint (area H).

    Otherwise adhesion problems can occur.

    Observe pretreatment of bonding surfaces.

22. Sand down mating surfaces to bare metal in cross-hatched areas.
23. Remove grinding dust.
24. Apply zinc dust paint to the mating surfaces onto connecting flanges that are no longer accessible after installing side roof paneling.

    Do not coat bonding surfacers with zinc dust paint (area I).

    Otherwise adhesion problems can occur.

    Observe pretreatment of bonding surfaces.

Courtesy of MERCEDES-BENZ USA