Alfa Romeo 33 owners manual page 304

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 2. Outer parts protection I . When removing external parts (hood, back door, Arm different moldings, finishings) it is necessary to protect body length surfaces with clothes, protection tape or other materials, in order not to damage or scratch vehicle body. . The scratched painted surfaces must be repaired: even a slight scratch may cause corrosion. Maladjusted electrode length CAUTIONS DURING Align both electrod- CORRECT INCORRECT REPLACEME-NT OPERATIONS Use genuine spare parts. . (3) Electrode end diameter It is recommended always to use genuine spare parts. It is necessary to carefully verify diameter af electrode This allows perfect repair and restoration of vehicle original functioning. ends in order to obtain the required welding strength. Before starting working, make sure that end diameter (D) has a value proportional to sheet thickness. Remove burnt and foreign matters from electrode ends. CAUTIONS DURING WELDING OPERATIONS Spot welding 150° 1. Spot welder Before starting welding operations, carry out the follow- D=Zt i-3(mm) ing checks in order to obtain welding sufficient strenght: (1) Welder arm adjustment a) Keep the arm as short as possible in order to obtain welding maximum pressure. D= Electrode end diameter , ; ~ t =Sh;thickny b) Tighten arm and tips securely so as they do not get loose during soldering operations. Spot welder a/m 2. Condition and preparation of panels to be soldered If the surface of the parts to be welded presents gap, paint film, rust or dust, this prevents welding current flow, thus reducing soldering area and, as consequence, strength of welding spot. Before starting welding, verify conditions of the parts to be welded, carrying out proper corrections. (1) Clearance between the parts to be welded. Presence of any clearance between surfaces to be welded, Arm minimum causes reduction of current flow, The welding thus lenght obtained, results to be insufficient and poor in strength, Before carrying out soldering, match the surfaces and, when necessary, tighten them by means of a clamp. (2) Electrode alignment Align ends of upper and lower electrodes. A misalignment of electrodes generates insufficient pressure of soldering points and, as consequence, an insufficient strength of points themselves. 49-15 May 1983

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