Weld In Inner Section Of End CROSSMEMBER - Ar64.20-S-1120-03EA

Model 447.6 

Model 447.7 

except code UR1 (Seat rail system with quick-release attachment system) 

except code UR3 (Seat mount with quick fastener (2 passenger seat rows)) 

except code UR6 (Rear seats with quick-release locks (1st row)) 

except code ZU4 (Production Argentina) 

Model 448.7 

except code UR1 (Seat rail system with quick-release attachment system) 

except code UR3 (Seat mount with quick fastener (2 passenger seat rows)) 

Fig 1: Identifying Locating Tool (447 589 01 23 00)

Courtesy of MERCEDES-BENZ USA

1. Install crossmember inner section (1) and lower corner pillar reinforcement with locating tool, fit and fix in place.
2. Crossmember inner section (1) (areas A to C).

   Spot weld area A only in accessible area.

3. Remove lower corner pillar reinforcement and locating tool.

   Courtesy of MERCEDES-BENZ USA

4. Complete crossmember inner section (1) (area A).
5. Crossmember inner section (1) (areas D to G).
6. Crossmember inner section (1) (areas H and I).

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

7. Clean weld joints.
8. Remove shavings.

   Courtesy of MERCEDES-BENZ USA

9. Coat welding areas no longer accessible after installing bottom corner pillar reinforcement and crossmember outer section, clean and coat with zinc dust paint.