The hood, trunk lid, doors as well as the front fenders are bolted on and easily replaced. When installing, it is necessary to strictly maintain the correct gap (seam width), otherwise, for example, the door will knock, or increased noise from the wind may occur during movement. In any case, the gap must be parallel, those. the distance between the parts of the body along the entire length of the seam / gap must be strictly the same. Deviations up to 1 mm are allowed.
The main parts of the A6 body are protected by zinc coating corrosion. External parts of the body are electrolytically galvanized, as these parts and parts are easily varnished and easily change their shape. Internal and invisible parts and parts are hot-dip galvanized for reasons of economy. To further enhance corrosion protection, all cavities and parts of the body are filled with wax and a protection is applied to the underbody.
Safety instructions for body work
If welding work is to be carried out on the body, it must be carried out by resistance spot welding. If it is impossible to fix the welding tongs, then gas-electric welding is used. Since the bodywork is mostly completely galvanized, the following instructions must be observed.
If welding work is to be carried out, the battery must be completely disconnected (terminals + and -) and carefully insulate both battery terminals (+) And (+). When welding near the battery, it must be removed.
Attention
- When the wires are disconnected from the battery terminals, the data on the recorded malfunctions are erased in the memory blocks of the control devices, therefore, before disconnecting the wires, it is necessary to contact the workshop to recall the malfunctions recorded in it. After connecting the wires to the battery terminals, it is necessary to activate and reprogram the power windows, as well as the position of the rear-view mirrors and seats.
- If the car has a radio with a code, then before disconnecting the wires from the terminals from the battery, check that there is a code to reactivate the receiver. Otherwise, it will be possible to put the radio receiver into operation only at a specialized station.
Safety note
When welding galvanized steel sheets, poisonous zinc oxide is released, so it is necessary to take care of good ventilation of the workplace.
Increase welding current (A) by 10% to a maximum of 30%.
Use hard-drawn copper electrodes with high thermal resistance (more than + 400°С).
Clean the electrodes frequently. The contact diameter must be 4 mm.
Increase the pressure on the electrodes.
Increase welding time. The welding time is correct if the welding points do not spatter.
On the parts of the filled air conditioner, it is forbidden to carry out welding work, as well as soldering with soft or hard solder. This also applies to welding and soldering work on the vehicle if there is a risk of heating parts and parts of the air conditioner.
As part of the paintwork repair, the car must be heated in a dry oven or its pre-chamber only up to 80°C. Otherwise, electronic devices may be damaged. In addition, overpressure builds up in the air conditioner, which may cause the air conditioner to explode.
Remove the PVC bottom protection with a rotating wire brush or heat it with a torch to +180°C and remove the PVC layer with a spatula. When heated above this temperature, hydrochloric acid is formed, which strongly contributes to corrosion, and harmful vapors are also released.
Instructions for work on interior fittings
If work is to be carried out on the internal equipment, the following instructions must be observed.
To remove the plastic upholstery, it is recommended to use a special tool. Always replace damaged clips/spring clips when installing.
Seats and seat belts are equipment on which safety depends. Therefore, it is only necessary to carry out the work described below. Do not undertake other work yourself. They are carried out by qualified personnel at service centers.
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