Prevenção de corrosão

501-25-35 Body Repairs - General Information 501-25-35 DESCRIPTION AND OPERATION ‡ The underbody protection is applied as a sprayable sealing compound. ‡ In the area around the structural members, the underbody protection is sprayed on and spread across a wide area. Because of the coarse surface structure of the stone chip protection material, it is recommended to only perform a repair over the whole surface, if there is damage over visible areas. Otherwise there is the danger of serious irregularities on the surface. The thickness and appearance of the underbody protection and stone chip protection must be matched to the original. Special spray guns are used to work the materials for this reason. A test spray must always be performed beforehand however, to determine the correct appearance and layer thickness. Cavity protection After painting work has been completed, a general check is made of the work that has been done. Before final reassembly of the vehicle, the cavity wax protection in the area of the repair must be renewed. Cavity wax protection must be performed carefully so that the quality of the repair conforms with Ford standards: ‡ Guide the cavity wax probe carefully in the area of the repair so that targeted corrosion protection is achieved. ‡ Pay special attention to edges and swage line on stepped joints, the wax must cover the inner edge areas. ‡ The cavity wax must flow along the stepped sheets so that the wax is drawn between them by capillary action. A hole may be drilled in a suitable place for areas which are not accessible for the application of cavity wax. The diameter depends on the size of plugs available. When this is done it is vital to make sure that no drilling swarf remains in the cavity (rust will form if any remains). The edge of the hole must be treated with cavity wax. Finally close with a plug and seal with underseal. Only on components with clinched flange edges: After painting, the inner clinched flange edge must be sealed as far as is possible with cavity wax. For this, the repaired component should be positioned upright and corrosion protection wax sprayed into the water drainage holes and/or the thread holes for the hinges in both directions (50 ml corresponds to about 20 seconds spraying time). For doors, tilt and turn the component to spread the corrosion protection wax over the whole edge of the flange. Wax application