Maintenance Of Body Beam; Baisc Explanation Of Maintenance Of Car Body - Chery automobile Service Manual

BAISC EXPLANATION OF MAINTENANCE OF CAR BODY

The maintenance of a car body should be carried out by professional personnel in accordance
with the manufacturer's requirement, this is the only way to ensure the effectiveness of the
commitment for "no corrosion" and "no painting dressing defect".
1. Only the materials specified by the manufacturer should be used.
2. When carrying the welding work on the outer sides of the car, protective paint must be
applied on the internal side of the car body first.
3. When carrying the spot welding, zinc painting must be used.
4. Before carrying the air tight sealing for the welding position, one layer of painting must be
applied on the internal and external side.
5. Before applying protective painting on the chassis, another protective layer should be
painted to avoid being hit by stones.
6. After finishing the spraying of painting, all openings of the painting position should be
secured by fasteners.
In certain circumstances, the car must be placed on the platform of the elevator; this is
because the distribution of the car weight will be affected when the parts are being
dismantled.
Before carrying pressure-tight-weld by spot welding method, the connections and caps of the
battery cells must be removed. Before carrying out the welding, inspect the ventilation
condition to judge if it is adequate to carry out the work.
When carrying maintenance of car body in a certain space, pay attention to prevent other cars
from being damaged in that area.
Extreme care must be taken when carrying spray powder or welding near the periphery of the
fuel tanks or parts of the fuel system; if safety cannot be ensured, then the mentioned parts
should be removed.
When carrying out maintenance or spraying works, pay attention to take adequate precaution
of any accidence.
When carrying out welding work on the galvanized steel plates, the spot welding current have
to be increased by 30%, make sure the tip of the electrode used is the pointed type, and the
clamping force of the electrode should be subsequently increased; when carrying out gas
shielded welding, the welding current should even be further increased.
Welding, soft soldering or solder brazing work must not be carried out on the air conditioning
parts; it is also not allowed to carry out such welding mentioned in the car, which may caused
overheating of such parts. When carrying out painting and spraying maintenance work on the
car frame, irrespective whether it is done in a drying oven or preheated oven, the temperature

MAINTENANCE OF BODY BEAM

S-40