Prepare wheelhouse for installation - AR62.20-P-1200-19SX

Fig 1: Identifying Spot Weld Milling Cutter (201 589 00 51 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Front Wheelhouse Spot Welding Areas (A, B And C)

Courtesy of MERCEDES-BENZ USA

The following operation steps are shown on the left component for model 221 and must be performed analogously on the right side in the event of damage.

1. Expose spot welds on front wheelhouse (1) and section (1.1) (areas A, B and C).
2. Cut out spot welds on front wheelhouse (1) and section (1.1) with spot weld milling cutter or ball cutter (areas A, B and C).

   Cut through two sheet panel thicknesses (area A).

3. Heat section (1.1) in cross-hatched area with hot air gun.

   Cross-hatched area is additionally glued.

4. Remove section (1.1) from front wheelhouse (1).
5. Expose spot welds on section (1.2) (area D).
6. Cut out spot welds on section (1.2) with spot weld milling cutter (area D).
7. Remove section (1.2) from front wheelhouse (1).
8. Punch dia. 7 mm holes in front wheelhouse (1) (area F).
9. Punch dia. 7 mm holes in front wheelhouse (1) (areas E and G).
   Fig 3: Identifying Front Wheelhouse Holes Areas (E And G)

   Courtesy of MERCEDES-BENZ USA
   Fig 4: Identifying Front Wheelhouse Grinding Areas

   Courtesy of MERCEDES-BENZ USA
10. Grind connection surfaces on front wheelhouse (1) down to bare metal in cross-hatched areas with round wire brush.

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

11. Grind cross-hatched areas on front wheelhouse (1) around holes with round wire brush.
12. Using zinc dust paint, coat insides of spot weld flanges and riveted joints that were not additionally bonded.

    Do not coat bonding surfaces with zinc dust paint to avoid adhesion problems (areas H, I, J, K and L).

    Observe pretreatment of bonding surfaces.