Upper Front Longitudinal Member SEPARATATION - Ar62.20-S-1286-01E

Model 447, 448 

Courtesy of MERCEDES-BENZ USA

1. Expose spot welds on upper front longitudinal member (1) and cut out (areas A and B).

   Courtesy of MERCEDES-BENZ USA

2. Expose spot welds on upper front longitudinal member (1) and cut out (area C).
3. Heat upper front longitudinal member (1) in area D.

   Area D is bonded.

4. Remove upper front longitudinal member (1).

   Courtesy of MERCEDES-BENZ USA

5. Sand down mating surfaces to bare metal in crosshatched areas.

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

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

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

   Otherwise there may be adhesion problems.

   Observe pretreatment of bonding surface (area E).