Alfa Romeo 33 owners manual page 306

text version of content this owner's manual page from owners manual to the vehicle Alfa Romeo 33, year of production 1983 - 1995:

BODY - SHEET METAL PANELS MIG welding 01 1. Conditions of panel to be welded. f 1 CORRECT By means of belt sander or wire brush, remove any It must form an opening of foreign matter from surface. about 3 mm dia., when stressing Paint films, rust or oils present on sheet surface, causes decrease of welding strength, thus generating blow holes. i INCORRECT 2. Cautions during welding operations. establishedholes) (II Plugwelding (of pre t a) Make a hole, having6 to 6 mm diameter (0.20 to 0.24 in) on one of the two sheets to be welded, then match the two sheets and clamp them. b) Position the torch at right angle with respect to (2) Test to be carried out after welding, by means of chisel and hammer. sheet, then fill metal into the hole. . Each time welding is stopped, on the surface an Insert tip of a chisel between the welded sheets and oxide film generates whichcauses blow holes. If this slightly tap on chisel until, between sheets, it is occurs, remove oxide by means of a wire brush. obtained a 3 to 4 mm clearance (0.12 to 0.16 in); if, c) Make sure that welding between upper and lower on the welded part, no strain is present, test result is then positive. sheet is perfect. . If sheets thickness is not equal, clearance between sheets must be limited to 1.5 to 2 (0.059 to 0.079 in). Take into account that the above value is only a reference one. . Part around the hole The mentioned clearance changes accordingta position of welding spots, flange length, welding inclination and other factors. DO never exceed this limits in order not to cause detachment of welding points. . After test, make sure that the strained part is Plug welding Panel edge Reference value: 3 to 4 mm I Butt weldiirg (0.12 to 0.16 in) Slightly tap by means of a hammer r Point to beweldad Reference value: 1.5 to 2.0 mm (0.059 to 0.079 in) SEC. A-A (2) Butt welding. a) By means of intermittent weld, tack the two surfaces to be welded in order to prevent strains and align the Slightly tap by means two surfaces, then, fill in the spaces by placing small of a hammer welding beads. Mav 1983 49-18 -.

owners manual Alfa Romeo 33

owners manual Alfa Romeo 33 - year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 - Alfa Romeo 33 owners manual EN