Mercedes S-Class W-140

In 1991-1999 editions

Repair and enterprise of the car

Precautionary measures at work of a body

At repair of a body it is necessary to use it is necessary spot welding. Only if to the place of sweat electrodes cannot be brought, welding needs to be used it is necessary in a circle of inert gases. As several elements of a body are galvanized, it is necessary to take the following precautionary measures:

At work of sweat or some other works which are connected with formation of sparks you switch off the battery (positive and negative cables) by all means and carefully you isolate both clips (-) and (+). At execution of works near the battery, they it is necessary to be diminished. Without code the radio receiver can be made only by his producer or 100 Mercedes Benz;

When welding galvanized leaves poisonous oxide of zinc is formed. Therefore it is necessary to follow good ventilation of a workplace. Increase sweat current to 10 (at most 30) percent. Use electrodes from solid copper with high thermal resistance (above + 400 °C). More often you clean electrodes and you process them in 4 mm you increase pressure upon an electrode to diameter of a contact surface. Increase welding time. Time is correctly chosen if points of sweat are put without drop;

The detail of the conditioner which is stuffed coolant cannot weld also pajat as it is soft, and to firm lot. It behaves also to a situation if danger of heating of elements of the conditioner when welding or soldering other elements of a design exists.

At removal of the battery there will be memories given from electronic blocks, in particular, a code of the radio receiver is washed up!

In addition

It is not necessary to open it is necessary a contour of cooling of the conditioner as coolant during the meeting on skin of obmoroschenije can cause.

At a providing lakokrassotschnogo assignment in the dry furnace heating of the car up to temperature is not allowed above + 80 °C. Otherwise electronic devices of the car can be damaged. Besides, there will be in the conditioner pressure, being able raised to lead to destruction of system.

The protective cover of the earth of the car from PCHW moves away from the rotating steel brush or hot air in temperature to + 180 °C by means of schpatelja. When heating providing from PCHW up to temperature from above of 180 °C there is a chemical reaction and it is formed hydrochloric acid which promotes active development of corrosion, besides, noxious to health vapors are formed.