Crossover operation Skoda Yeti requires regular attention to safety systems, and the braking system occupies one of the key places here. The rear brakes on this model are often equipped with floating caliper disc mechanisms, which have their own design features for maintenance. Ignoring signs of wear can lead to costly caliper repairs or even brake failure at a critical time.
Many owners are faced with the need to replace consumables themselves in order to save on service costs or simply control the quality of the spare parts used. Unlike front brakes, rear brakes require a more complex procedure for preparing the piston, since it must not only compress, but also rotate. This article will go through each stage of the work in detail so that you can complete the procedure as safely and efficiently as possible.
The process does not take much time if you have a basic set of tools and an understanding of the mechanics of the unit. However, as with any technical intervention, there are some nuances here, which are often silent about in general instructions. We will consider exactly those points that are critical to the durability of your machine components.
Wear diagnostics and selection of suitable components
The first step should always be a thorough diagnosis. On Skoda Yeti Rear pad wear can be determined visually through technological holes in the brake disc or by removing the wheel. If the thickness of the friction lining is less than 2 mm, operating the vehicle is strictly prohibited, since the metal base of the pad will begin to lift up the disc.
When choosing new parts, it is important to consider that for different modifications Skoda Yeti Calipers from different manufacturers can be installed: TRW, Brembo, ATE or Teves. Piston sizes and bracket shapes may vary slightly, so universal kits may not always fit. It is best to rely on the original part number or proven analogues that match the VIN code of your car.
- π Check the presence of a wear indicator (sensor), if it is included in the package
- βοΈ Check with the caliper manufacturer before purchasing a set of pads
- π° Compare prices for original spare parts and quality brands like Pagid or Textar
You should not skimp on friction materials, as cheap analogues can become dusty, squeak, or have an unstable coefficient of friction at high temperatures. Quality pads provide predictable braking and do not prematurely destroy brake rotors.
β οΈ Attention: If during inspection you find deep grooves on the surface of the brake disc or traces of an oil film, replacing the pads alone will not solve the problem. It is also necessary to replace or sharpen the discs and check the condition of the hub seals.
Preparing tools and work area
To successfully complete the job, you will need a standard set of automotive tools, but with some specific additions. Pay special attention to the keys for unscrewing the caliper guides, as they often stick due to the aggressive environment and corrosion.
Be sure to prepare a jack and reliable stands for the body to eliminate the risk of the car falling. Working under a machine that is only supported by a jack is not permitted. You will also need a special device for pressing the piston, since on the rear calipers it does not just press, but rotates.
- π§ Set of sockets and ratchets (usually requires a 13 or 15 mm wrench)
- π οΈ Brake caliper clamp or specialized tool
- 𧴠Brake Cleaner and Slide Lubricant (High Temperature)
- π¦ Portable lamp for inspecting hard-to-reach places
It is important to prepare a place in advance for removing old parts. Dirt and rust on bolts can be a serious problem. If the guides do not unscrew, use penetrating lubricant and give it time to work, but do not overheat the brake rotor with a torch to avoid damaging the wheel bearing.
β οΈ Caution: Never use regular lithium grease or WD-40 on the caliper guides. These compounds dissolve rubber boots and cause the mechanism to jam in a short time. Use only silicone or special brake lubricant.
Removing the wheel and dismantling the brake caliper
After the car is securely raised and secured, unscrew the wheel bolts and remove it. You now have full access to the brake mechanism. Clean the area around the caliper of dirt and deposits to prevent dust from getting inside during disassembly, which could damage the seals.
Next, you need to unscrew the guide bolts holding the caliper bracket. Usually there are two of them: upper and lower. Use a torque wrench or simply control the force to avoid stripping the threads if the bolts are old. After unscrewing, the bracket must be carefully moved to the side.
- π Make sure the car is on the handbrake (for front wheels) or in neutral (for rear wheels when checking)
- π© Unscrew the bolts securing the caliper bracket to the steering knuckle
- π Carefully hang the bracket on the wire to avoid damaging the brake hose
Old pads usually fall out on their own or can be easily removed by hand. Pay attention to their condition and the presence of clamping brackets (anti-creaking plates). If they are installed, they must be transferred to new pads or replaced if they show signs of corrosion and deformation.
- Single piston floating
- Double piston fixed
- I don't know
- Mechanical hand brake on drum
βοΈ Removing the caliper
Key Step: Rolling the Caliper Piston
This is the most critical moment of the entire procedure. Rear piston in Skoda Yeti has an internal thread, as it serves as a drive for the handbrake. If you try to simply push it in with a flat tie rod, you will break the mechanism or the piston. It is necessary to use a tool that simultaneously presses and rotates the piston.
The rolling process requires patience. Insert a special key or adapter into the grooves on the end of the piston and begin to rotate clockwise, while simultaneously applying force to press in. If you donβt have special tools, you can use a universal tie with a set of adapters, but you need to act extremely carefully.
- π Rotate the piston strictly clockwise (standard thread)
- π Check the level of brake fluid in the reservoir so that it does not overflow
- π§ Use only a serviceable tool to avoid tearing the grooves on the piston
If the piston does not budge, check whether the brake fluid reservoir is open. Jamming may be due to a vacuum in the system. Also make sure the handbrake is fully released. In some cases, if the handbrake mechanism is jammed, a more complex disassembly procedure will be required.
Installing new pads and assembling the mechanism
After the piston is recessed all the way, you can begin installing new pads. Before doing this, be sure to clean the seats in the bracket from rust and dirt. Apply a thin layer of high-temperature grease to the metal pad pads that contact the caliper, but be careful not to get it on the friction lining.
Install new anti-squeak plates if they are included or were removed. They should fit tightly in their grooves. Then insert the new pads into the bracket. They should move freely, but without play. If the pads are sticking, check that the pads are installed correctly.
- π§Ό Clean the seats in the bracket with a wire brush
- π§ Apply lubricant to guide bolts and boots
- π© Reinstall the bracket and tighten the guides to the recommended torque.
The guide bolts must be tightened with a certain force to ensure the mobility of the bracket, but to prevent its displacement. Usually the torque is about 25-30 Nm, but it is better to check the exact data in the service book for your specific modification Skoda Yeti.
β οΈ Attention: After installing new pads, be sure to press the brake pedal all the way down several times until the piston comes out and presses the pads against the disc. Otherwise, when you first brake, the pedal will go to the floor and you will lose control.
Fluid level check and testing
While pressing the piston, the brake fluid level in the reservoir could rise. If it is at the maximum level, it is better to pump out some liquid so that when it expands, it does not spill out and damage the paintwork of the body. Use a syringe or bulb to carefully remove excess.
Before starting to drive, make sure that the wheels rotate freely and there are no extraneous sounds. Carry out test braking on a safe section of the road. The pedal should be elastic, without dips or vibrations. If the pedal is soft, there may be air left in the system and will require bleeding.
| Parameter | Meaning | Comment |
|---|---|---|
| Minimum pad thickness | 2 mm | Critical wear |
| Guide tightening torque | 25-30 NΒ·m | Check the manual |
| Lubricant type | Silicone/Brake | Do not use lithol |
| Tire pressure | 2.2-2.4 bar | For correct operation of ABS |
When breaking in new pads, avoid sudden braking and extreme loads. The friction material must be worn in to the disc surface. This usually takes 200-300 kilometers. During this period, braking efficiency may be slightly lower than usual.
Common errors and ways to resolve them
One of the most common mistakes is not cleaning the guides properly. Remaining rust or old thickened grease causes the bracket to stop floating. As a result, the pad wears unevenly: on one side it wears off faster, on the other it remains thick.
Another mistake is ignoring the condition of the anthers. If the guide bolt boot is torn, moisture and dirt get inside, which quickly disables the mechanism. When replacing pads, always inspect the boots and replace them at the slightest sign of damage.
- β Do not use metal brushes to clean friction linings
- β Do not leave the caliper hanging from the hose without support.
- β Do not mix different types of brake fluid (DOT4, DOT5)
If you hear squeaking after replacement, check that the anti-squeak plates are installed correctly and that the contact points are lubricated. Sometimes squeaking occurs due to overheating of the discs, which requires resurfacing or replacing them.
FAQ: Answers to frequently asked questions from Skoda Yeti owners
Is it possible to replace only the rear pads without replacing the discs?
Yes, it is possible if the thickness of the brake disc exceeds the minimum permissible limit indicated on the disc itself or in the documentation. However, it is recommended to measure the thickness and runout of the disc, as old pads may have left deep grooves that new ones cannot compensate for.
Do I need to bleed the brakes when replacing the pads?
Usually bleeding is not required, since the system does not open. However, if you accidentally open the fitting or the fluid level drops too low, air may enter the system. In this case, pumping is required.
Why is the brake pedal soft after replacement?
Most likely, you did not press the pedal after installing the new pads, and the piston did not press them against the disc. Or air has entered the system. In any case, it is necessary to sharply press the pedal in place several times to restore pressure.
What is the replacement interval for rear pads on the Skoda Yeti?
The average resource is 40-60 thousand kilometers, but this greatly depends on driving style and operating conditions. In a city with frequent traffic jams, the pads wear out faster than on the highway. Regular diagnostics are the key to safety.