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Rear Longitudinal Member Install - Ar64.20-P-1200-24MFA

Model 177.0 

with code U55 (Multi-link axle) 

except code U54 (Compound-link axle) 

Model 247.0/6/7 

with code U55 (Multi-link axle) 

except code U54 (Compound-link axle) 

REPAIR MATERIALS 

Number Designation Order number
BR00.45-Z-1012-13A Blind rivet Y2 6.5x12.5 (clamping range 2 mm to 5 mm, draw-off strength min. 19 kN) A 004 990 16 97
BR00.45-Z-1016-13A Blind rivet Y3 6.5x14.5 (clamping range 4 mm to 7 mm, draw-off strength min. 19 kN) A 004 990 17 97
BR00.45-Z-1056-07A 1K-zinc dust paint A 000 986 28 00
BR00.45-Z-1162-02A Parts kit for 2-component adhesive for body A 012 989 17 71

IMPORTANT The next 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.

Additional information can be found in the superordinate service document.

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

G16051324Courtesy of MERCEDES-BENZ USA
  1. Install, fit, and fix in place the rear longitudinal member (1) with connection (2), cover (5), and straightener.
  2. Drill rivet holes in rear longitudinal member (1) with Ø 6.7 mm (areas A6 and A8 ).
  3. Drill rivet holes in rear longitudinal member (1) with Ø 6.7 mm through existing holes in body (area A7 ).
  4. Drill rivet holes in cover (5) with Ø 6.7 mm (areas A1 , A2 , A3 and A4 ).
  5. Drill rivet holes in rear longitudinal member (1) with Ø 6.7 mm through existing holes in body (area A5 ).
  6. Drill rivet holes in rear longitudinal member (1) with connection (2) with Ø 6.7 mm (areas B1 , B2 and B3 ).
    G16051325Courtesy of MERCEDES-BENZ USA
  7. Install, fit, and fix in place the cover (4) and the support for the rear bench seat (6).
  8. Drill rivet holes in cover (4) with Ø 6.7 mm (areas C1 , C2 , C3 , C4 , C5 , C6 , C7 , C8 and C9 ).
  9. Drill rivet holes in rear bench seat mount (6) with Ø 6.7 mm (areas D1 , D2 , D3 and D4 ).
    G16051326Courtesy of MERCEDES-BENZ USA
  10. Install, fit, and fix in place reinforcement for the rear seat (3).
  11. Drill rivet holes in rear seat reinforcement (3) with Ø 6.7 mm (areas E1 , E2 , E3 , E4 and E5 ).
  12. Remove rear seat reinforcement (3), rear bench seat support (6), cover (4), rear longitudinal member (1) with connection (2) and cover (5).
  13. Deburr rivet holes on rear seat reinforcement (3), rear bench seat support (6), cover (4), rear longitudinal member (1) with connection (2), cover (5), and on the body on both sides.
  14. Remove drill chips.
  15. Coat the inner faces of riveted joints with zinc dust paint.

    NOTES The interior faces of riveted joints to which the 2-component adhesive is to be applied must not be coated with zinc dust paint.

    Otherwise, adhesion problems will occur.

    G16051327Courtesy of MERCEDES-BENZ USA
    G16051328Courtesy of MERCEDES-BENZ USA
  16. In the cross-hatched area, apply the 2-component adhesive to the body (area F1 ).

    IMPORTANT Observe pretreatment of bonding surfaces and manufacturer's specifications for drying and processing time of 2-component adhesive.

  17. Apply 2-component adhesive in cross-hatched area to rear longitudinal member (1) with connection (2). (area F2 ).

    IMPORTANT Observe pretreatment of bonding surfaces and manufacturer's specifications for drying and processing time of 2-component adhesive.

    G16051329Courtesy of MERCEDES-BENZ USA
  18. Install and fix in place the rear longitudinal member (1) with connection (2), and cover (5).
  19. Rivet the rear longitudinal member (1) using rivets Ø 6.5x14.5 mm (areas G1 and G2 ).
  20. Rivet the cover (5) using rivets Ø 6.5x14.5 mm (areas H1 , H2 , H3 , H4 and H5 ).
    G16051330Courtesy of MERCEDES-BENZ USA
  21. Rivet the rear longitudinal member (1) with connection (2) using rivets Ø 6.5x14.5 mm (areas I1 , I2 and I3 ).
  22. Apply 2-component adhesive to the rear longitudinal member (1) in the cross-hatched (area J).
  23. Install and fix in place the cover (4) and the support for the rear bench seat (6).
  24. Rivet the cover (4) using rivets Ø 6.5x12.5 mm (areas K1 , K2 , K3 , K4 , K5 , K6 , K7 and K8 ).
  25. Rivet the cover (4) using rivets Ø 6.5x14.5 mm (areas L1 , L2 , L3 and L4 ).
  26. Rivet the support for the rear bench seat (6) using rivets Ø 6.5x14.5 mm (areas M1 , M2 and M3 ).
    G16051331Courtesy of MERCEDES-BENZ USA
  27. Install and fix in place the reinforcement for the rear seat (3).
  28. Rivet the reinforcement for the rear seat (3) using rivets Ø 6.5x14.5 mm (areas N1 , N3 , and N4 ).
  29. Rivet the reinforcement for the rear seat (3) using rivets Ø 6.5x12.5 mm (areas N2 and N5 ).
  30. Reinforcement for the rear seat (3) SHIELDED GAS SEAM WELD (area O).

    IMPORTANT Inert gas weld in intervals and allow welding area to cool down in between. Reduces heat distortion.

    G16051332Courtesy of MERCEDES-BENZ USA
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