Upper Front Longitudinal Member Preparation - Ar62.20-S-1286-02E

Model 447, 448 

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

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

2. Remove shavings and drill chips.
3. Coat insides of spot weld flanges with zinc dust paint.

   Do not coat bonding surface (area A) with zinc dust paint.

   Otherwise there may be adhesion problems.

   Observe pretreatment of bonding surfaces (area A).

   Courtesy of MERCEDES-BENZ USA