Car ล koda Octavia A5 remains one of the most popular sedans and liftbacks on the secondary market due to its reliability and practicality. However, the suspension of this car, especially the spring element, inevitably loses its performance properties over time. Many owners are faced with the problem of body sagging, which affects not only the appearance, but also the geometric parameters of wheel alignment.
Replacing springs is not just a cosmetic procedure, but a necessity to maintain driving safety. Reference rigidity suspension is designed by engineers taking into account the weight of the body and dynamic loads, so any deviations can lead to accelerated wear of shock absorbers and levers. In this article, we will discuss which springs are better to choose, how to determine their wear and properly install on the Octavia A5.
Design features of the Octavia A5 suspension
Model suspension Octavia A5 VW A5/1Z platform has its own unique characteristics that dictate the choice of spare parts. The front suspension is made according to the McPherson type, where the spring works in pair with a shock absorber and a transverse stability stabilizer. The rear beam also relies on springs, which often have different turns lengths to ensure proper kinematics.
It is important to understand that on one model springs with different markings can be installed depending on the configuration and engine. For example, for versions with diesel engines 1.9 TDI and gasoline 1.6 MPI Often used parts with different load capacity. Incorrect selection can lead to the fact that the front of the car will be too high or, conversely, subsided.
There are several types of springs available for replacement:
- ๐ง Original springs have factory markings, provide standard characteristics of comfort and handling.
- ๐ง Reinforced springs - are intended for cars with a large mileage or increased load capacity, often have a higher pitch of turns.
- ๐ง Sports springs - reduce clearance by 30-50 mm, increase rigidity, but require the installation of appropriate shock absorbers.
Signs of wear and diagnosis of springs
To determine that the springs have become unusable, you can not only by appearance. The main symptom is a change in the ground clearance. If you see that the rear of the car clearly sank, and the front, on the contrary, is raised, this is a sure sign of fatigue of the metal in the rear springs. Loss of elasticity This happens gradually, and the driver may not notice it for months until a dramatic change in the behavior of the car occurs.
Another alarming signal is the appearance of extraneous knocks when passing irregularities. Often the knock comes not from the shock absorber, as many people think, but from a sifted spring, which ceased to hold the body in its normal position. As a result, the wheel begins to "beat" on the bumps, hitting the body or restrictive elements.
For accurate diagnosis, it is necessary:
- ๐ Visually inspect the springs for cracks, chipped paint or traces of corrosion.
- ๐ Measure the height of the ground clearance on both sides of the car.
- ๐ Check the condition of the springs and anthers of shock absorbers.
โ ๏ธ Note: If you notice that the spring is broken or has deep corrosive lesions, the operation of the car is strictly prohibited until the part is replaced, as this can lead to loss of handling.
Selection of manufacturer and parts items
Spare parts market for Octavia A5 It is overloaded with offers, which complicates the choice. Original from VAG It will always be the best solution, but the cost can be unnecessarily high for a budget repair. A good alternative is the brands that are part of the supplier concerns, such as: Lemfรถrder, Sachs or Kyb. They produce parts using the same technologies as the factory.
If the budget is limited, you can consider the products of such companies as: Mapco, SWAG or Topran. They offer decent quality at a reasonable price. However, it is worth avoiding cheap Chinese analogues of unknown brands, since their metal often does not undergo heat treatment of the required degree, which leads to rapid subsidence.
For the correct selection, you need to know the VIN code of the car, since the springs differ in:
| Body type | Engine | Article (example) | Feature |
|---|---|---|---|
| Liftback (A5) | 1.6 MPI / 1.9 TDI | 1K0 412 105 AA | Standard hardness |
| Liftback (A5) | 2.0 TFSI / 2.0 TDI | 1K0 412 105 AC | Increased load |
| Combie (A5) | All models | 1K0 412 105 AD | Reinforced rear |
| Sports version | RS / Turbo | 1K0 412 105 AF | Reduced clearance. |
- Original
- Brand analogues (Sachs, Lemforder)
- Budget (Mapco, SWAG)
- Sports (Eibach, H&R)
Instructions for spring replacement
Replacing springs with Octavia A5 - the procedure is time-consuming, requiring special equipment, in particular, screeds for springs. Without them, it is impossible to dismantle the part due to the huge accumulated stress. Work is better to carry out on the lift or observation pit, providing reliable fixation of the car.
First, you need to remove the wheel and unscrew the lower bolt of the shock absorber attachment to the rotary fist. Then, using screeds, compress the spring until it releases the upper support. After that, the bolts of the shock absorber attachment to the body are unscrewed, and the assembly is removed entirely.
The replacement process includes the following steps:
โ๏ธ Preparing to replace springs
It is also worth checking the condition of the upper supports and anthers, since their replacement in the future will require re-disassembly of the node.
โ ๏ธ Warning: Never unscrew the top shock absorber nut while the spring is under pressure, even if it is compressed with screeds. Weakening of screeds should occur gradually and only after fixing the nut.
What to do if the spring is stuck?
If the spring is stuck to the cup, use a penetrating lubricant such as WD-40 and give it time to act. You can gently tap the cup with a hammer, but not on the spring itself, so as not to damage its structure.
Nuances of installation and suspension settings
After installing new springs mandatory collapse-convergence. Changing the length of the spring changes the geometry of the suspension, and if you do not adjust the angles of the wheels, the tires will begin to wear out unevenly after a couple of thousand kilometers. This is especially true for front wheels, where the load on the suspension is maximum.
When replacing springs with sports or reinforced, you need to take into account the change in clearance. If you have installed understated springs, the standard shock absorbers can work at the limit, which will lead to their rapid failure. In such cases, it is recommended to change shock absorbers paired with springs on special sports racks.
It is also worth paying attention to the following points:
- ๐ ๏ธ Check the length of the bar of the stabilizer of transverse stability, since with a strong understatement it can touch the elements of the body.
- ๐ ๏ธ Make sure that the new springs have the correct color markings that meet the factory specifications.
- ๐ ๏ธ Make sure that the spring sits in the cup smoothly, without distortion.
Before starting work on replacing springs, be sure to mark the position of the upper supports relative to the body to maintain the factory balance during assembly, if you use old supports.
Common repair mistakes
One of the most common mistakes is to replace only one spring. This is unacceptable, since springs have a different degree of wear, and replacing only one will lead to a distortion of the body and a violation of controllability. Replacement should be made in pairs on one axle, and ideally on all four wheels, if the vehicle mileage exceeds 100,000 km.
Another mistake is using old screeds or a poor-quality tool. The screeds must be reliable and designed for high effort. The use of homemade devices or worn tools can lead to the spring breakage and serious injury to the master.
โ ๏ธ Note: Do not try to squeeze the spring with a jack under the lever without using professional screeds. This is extremely dangerous and can lead to death.
Also, owners often ignore the condition of the spring supports. Old rubber is pressed, cracked and ceases to extinguish vibrations. Installation of a new spring on a worn support will lead to the appearance of knocks and accelerated wear of the spring itself.
The replacement of springs should always be carried out in pairs on one axle, with the obligatory subsequent adjustment of the angles of installation of wheels to preserve the safety and resource of tires.
Cost and economic feasibility
Replacing springs is an investment in safety and comfort. The cost of work in the service can vary depending on the region and the complexity of access to details. For Octavia A5 The work usually takes 2-3 hours, as the suspension design is quite affordable, but requires accuracy.
If you plan to do the work yourself, consider the cost of the necessary tool. Buying quality screeds can cost more than the service itself if you plan to change the springs only once. However, if you plan to do repairs in the future, this is a justified investment.
Comparison of costs for different repair options:
- ๐ฐ Self-replacement Cost of spare parts + tool (savings of 40-50% of the cost of the service).
- ๐ฐ Replacement in service Cost of spare parts + work (time savings, quality assurance).
- ๐ฐ Installation of sports suspension The high cost of spare parts requires professional setting.
FAQ: Frequently asked questions
Can only the back springs be changed?
Yes, it is possible if the front springs are of normal height and have no signs of wear. However, it is recommended to check the condition of the entire suspension. If the rear sank due to overload, the front ones may be in good condition.
How to distinguish the original spring from the fake?
The original has a clear marking, a smooth surface without burrs and high-quality paint. Counterfeits often have uneven winding, poor painting and no marking on turns.
Do I need to change springs when replacing shock absorbers?
It is recommended, especially if the vehicle is over 100,000 km. Shock absorbers and springs work in pairs, and a worn spring can quickly disable new shock absorbers.
Does replacing springs affect fuel consumption?
It can indirectly affect. If the springs have subsided, the suspension geometry is broken, which increases the rolling resistance and wear of the tires, which can lead to a slight increase in fuel consumption.
Which springs are better to choose for winter operation?
For winter, standard or reinforced springs are better suited. Sports understated springs can catch the bottom of snow and ice, which is dangerous and harmful to the car.