Upper Front Longitudinal Member Partial Preparation - Ar62.20-P-1287-02FR

Model 257, 290 

The following operation steps are shown on the left side of the vehicle on model 257. 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.

1. Mark separating point on upper front longitudinal member (1) and cut out (area A).

   Transfer separation point from vehicle.

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2. Grind mating surfaces on upper front longitudinal member (1) down to bare metal in crosshatched areas.

   Grind mating surface on inside down to bare metal (area C).

   Sand down spot weld flanges to bare metal on both sides.

3. Remove grinding dust.
4. Coat insides of spot weld flanges with zinc dust paint.

   Do not coat bonding surfaces with zinc dust paint (areas B, C).

   Otherwise adhesion problems may occur.

   Observe pretreatment of bonding surfaces.

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5. Sand down mating surfaces on strut (2) to bare metal in crosshatched areas.
6. Remove grinding dust.

   Observe pretreatment of bonding surfaces.

   Courtesy of MERCEDES-BENZ USA