Back wing of the car Skoda Octavia A7 Often becomes a victim of road accidents, parking incidents or simply corrosion due to reagents. This part not only protects the wheel arch, but also plays a key role in the overall aerodynamics and aesthetics of the body. Damage to even a small area can lead to the spread of rust on the racks and rapids, which will significantly complicate repairs in the future.
Replacement of the rear wing by Octavia A7 has its own features, since the part is a non-removable part of the body and is connected to the power elements by point welding. Owners often have to choose between buying a new original item, restoring an old one, or installing a quality counterpart. Incorrectly performed work can disrupt the geometry of the body and lead to problems with suspension.
Selection of material and type of wing for facelift
Before starting work, it is necessary to determine the source of the new part. In the auto parts market, there are three main options: the original, a quality duplicate and a restored wing. The choice depends on your budget and your plans to sell the car in the future. For Skoda Octavia A7 Facelift (2017β2020) is important to consider the thickness of the metal and the quality of the corrosion-resistant coating.
Original wing from the manufacturing plant Skoda guarantees perfect geometry and compliance with factory standards of paint coating thickness. However, its cost often exceeds the price of a quality analogue by two to three times. Duplicates from proven brands, such as Paramex or PrascoThey are often of acceptable quality but may require additional fitting before installation.
- π‘οΈ Original: perfect geometry, high price, long-term delivery.
- π§ Quality duplicate: balance of price and quality, a small edit is possible.
- π¨ Recovered: Low price, but there is a risk of hidden metal defects.
It is believed that Chinese copies are very cheap, but in practice they often have casting defects and uneven metal thickness, which complicates the process. grinding and painting. If you are planning self-repair, it is better to immediately purchase a part with a margin of size so that it is possible to cut or bend the edges.
β οΈ Warning: Never skimp on corrosion-resistant treatment of a new part before installation, even if it is declared as "printed". Factory cover on dubbing is often insufficient for harsh winter conditions.
Necessary tools and preparatory work
For high-quality work on the replacement of the rear wing you will need an impressive set of specialized equipment. A simple set of keys will not be enough, as you will need metal cutting, removal of welded points and their subsequent replacement. Work with Octavia A7 requires care so as not to damage adjacent body parts, such as bumper or door.
First of all, make sure you have access to drilling machine Or a high-quality hand drill with a set of drills on metal. You will also need special milling cutters to remove the point welding so as not to damage the inner layer of the rack metal. Without the right tool, the process will turn into artisanal carving by a Bulgarian, which is unacceptable for serious repairs.
- π© A set of heads and rattles for dismantling the bumper and skin.
- π₯ Welding apparatus (inverter or contact welding) for welding a new wing.
- π¨ A hammer with a smooth and corrugated surface, linings for metal editing.
Prepare the workplace: the car should stand on a flat surface, preferably on a lift or overpass. Remove the wheel and remove the plastic arch protection to access the inside of the wing. This will allow you to assess the extent of the damage and plan the order of cutting the old element.
If you do not have the skills to work with body welding equipment, it is better to entrust the welding stage to specialists. The wrong provari can deform the metal and disrupt the geometry of the suspension, which will lead to the car being sidelined when driving.
- Original Skoda
- High-quality duplicate
- Restored old
- Buying used indiscriminately
Procedure for dismantling the damaged element
The process of removing the old wing begins with the complete disassembly of the neighboring nodes. You need to take off the back. bumperDoor linings (if the wing covers their edge) and decorative moldings. Nana Skoda Octavia A7 It is also often necessary to remove the back door or unscrew its hinges to gain free access to the junction of the wing and the rack.
The main difficulty is to remove the point welding. Use a cutter of the right diameter to drill the center of each welded point without going deep into the main metal of the rack. After drilling the points, use the mount or chisel to carefully separate the wing from the body. Do this gradually so as not to bend the power elements.
βοΈ Preparation for dismantling
When the wing is disconnected, carefully clean the interface places to pure metal. Clean the inside of the rack of rust and old sealant. If there are traces of corrosion on the rack, they must be treated with a rust converter and primed before installing a new part. This is a critical step for the longevity of the repair.
β οΈ Note: When dismantling, be extremely careful with the inner arch. If you damage the metal rack, repair will require the installation of additional reinforcing pads, which will greatly complicate the work.
Fitting and installing new parts
Before welding a new wing, it is necessary to conduct its thorough fit. Set the part in place without fixing and check the gaps with the door, trunk and bumper. Nana Octavia A7 The gaps should be uniform throughout the length, otherwise after painting it will look unaesthetic. Use rods to temporarily fix the wing in the correct position.
If the part does not fit a little, it can be gently bent or trimmed. Remember that the metal wing has a certain elasticity, and small irregularities can be corrected with the help of straightening. Do not try to βtightenβ the part with force, this will lead to the appearance of new strains and stresses in the metal.
- π Check the uniformity of the gaps along the perimeter of contact.
- π¨ If necessary, carefully adjust the edges with a hammer.
- π Use rods to fix the position before welding.
After fitting, it is necessary to drill holes for future welding. The distance between the points should be approximately 3-4 cm. Use a welding machine to weld the wing to the racks and threshold. It is recommended to use the βfirmwareβ welding method when you make small grips along the entire length of the seam to avoid overheating and deformation of the metal.
The subtleties of wing welding
When welding, it is important not to overheat the metal, as this can change its structure and properties. Make short grips, allowing the metal to cool between the passages. Use currents recommended for a metal thickness of 0.7-0.8 mm.
Sewing treatment and preparation for painting
After the wing is safely welded, the stage of surface preparation begins. All welded seams must be cleaned with a grinder to a smooth state. Then applied. putty to smooth out small irregularities and scratches. For putty metal use special compositions with aluminum powder, they provide better adhesion and strength.
Next comes the priming. Apply acid soil (ethoxide) to the welding and seams to protect the metal from corrosion from the inside. After drying, apply an acrylic filler soil that will create the perfect base for the paint. The soil should be applied evenly, without passes and undertightness.
Before applying paint, be sure to degrease the surface with antisilicone. Even microscopic particles of dust or fat can cause defects on the paint coating, such as shaven or detachment.
Grinding of the soil is performed using abrasives of different grains. Start with the P180-P240 for alignment, then move to the P400-P500 for a smooth surface. After grinding, the surface should be perfectly flat to the touch. Use the light at an angle to identify all irregularities.
Do not rush at this stage, as the correction of defects after applying the paint will cost much more and time.
Features of painting and finishing assembly
Painting of the wing can be done separately from the body, and together with it. The first method avoids masking other parts of the car, but requires perfect color selection and careful transition (blending) to neighboring parts. For Skoda Octavia A7 Often required to paint in body color with subsequent application varnish for protection.
When applying paint, use a spray gun with a nozzle with a diameter of 1.3-1.4 mm. Apply the paint in 2-3 layers with intermediate drying between them. After drying the paint is applied varnish, also in 2 layers. Lacquer should be of high quality, resistant to ultraviolet light and mechanical influences.
- π¨ Choose the color according to the code indicated on the plate under the hood.
- π‘οΈ Keep the temperature in the paint chamber.
- π¨ Use compressed air without moisture and oil for painting.
After drying the varnish (usually 24 hours), polishing is done to give shine and remove small defects. Then proceed to reverse assembly: install a bumper, moldings, arch skin and wheel. Check the operation of all mechanisms and the absence of creaks.
The quality of painting and varnishing directly affects the service life of anticorrosion coating. Savings on materials can lead to the appearance of rust in a year.
Comparison table of materials for repair
For clarity, we give a comparative table of characteristics of various materials used in the repair of the wing. This will help you make an informed decision when choosing spare parts and consumables.
| Material | Thickness (mm) | Corrosion resistance | Difficulty of processing | Cost |
|---|---|---|---|---|
| Original Skoda | 0.7-0.8 | High | Low | High |
| Paramex (duplicate) | 0.6-0.7 | Average | Average | Average |
| Chinese equivalent | 0.5-0.6 | Low | High | Low |
| Aluminum (rare) | 0.8-1.0 | Very high | Very high | Very high |
| Refurbished | Various | Depends on quality | High | Low |
The choice of material depends on your priorities. If you are interested in durability and appearance, it is better to choose the original or a quality duplicate. If the budget is limited, you can consider the option with a Chinese counterpart, but be prepared for additional work on corrosion protection.
β οΈ Attention: The use of aluminum putty at the joints of welding significantly prolongs the service life of the repair and prevents the appearance of rust under the paint layer.
FAQ: Frequently asked questions
Can I replace the wing without removing the bumper?
Technically possible, but highly discouraged. Without removing the bumper, you will not be able to access the lower mounting points and adjust the detail qualitatively. This will lead to a violation of the geometry of gaps.
How long does it take to replace a wing?
The process depends on the skill of the master and the condition of the body. On average, it takes 2 to 4 days to dismantle, fit, weld and prepare for painting. The painting itself can take another 1-2 days.
Do I need to do a wheel alignment after replacement?
If the wing replacement did not affect the elements of the suspension or spars, the collapse-descending is not necessary. However, if the spar or rack was damaged, checking the geometry of the suspension is mandatory.
How to protect a new wing from corrosion?
Use a multi-layer protection system: acid soil, epoxy soil, putty, filler soil, paint and varnish. It is also recommended to treat the internal cavities with antigravity or mastic.
Can I paint the wing in the garage?
Maybe, but the results will be much worse than in a professional camera. Dust, moisture and temperature changes can spoil the paintwork. For a high-quality result, an air filter camera is needed.