Prepare Front Roof Frame For Installation - Ar65.20-P-1006-04LWO

	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Notice	General information on body repair		AH60.00-P-0001-01KOA
Notice	Pretreatment of bonding surfaces		AH60.00-P-0008-01SX

Model 238.3 

The following repair materials must be used:

• Zinc dust paint

1. Grind mating surfaces on roof frame (1) down to bare metal in crosshatched areas.

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

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

   Do not coat bonding surfaces with zinc dust paint (areas A).

   Otherwise adhesion problems may occur.

   Observe pretreatment of bonding surfaces.

   Courtesy of MERCEDES-BENZ USA

   The following steps are shown on the left side of the vehicle and must be accomplished analogously on the right side of the vehicle.

4. Grind mating surfaces on gusset plate (2) down to bare metal in cross-hatched areas.

   In case of damaged gusset plate (2).

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

5. Remove grinding dust.

   In case of damaged gusset plate (2).

6. Coat insides of spot weld flanges with zinc dust paint.

   In case of damaged gusset plate (2).

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

   Otherwise adhesion problems may occur.

   Observe pretreatment of bonding surfaces.

Courtesy of MERCEDES-BENZ USA