The braking system is a critical safety element of any vehicle, and Skoda Octavia Tour is no exception. Over time, friction linings wear out, which requires their timely replacement. Ignoring system signals or a characteristic squeak can lead to more serious damage, including damage to brake discs and calipers.
The procedure for replacing rear brake pads on this model has its own characteristics due to the design of the rear caliper. Unlike the front wheels, an electric clamping mechanism is often used here, which requires a specific approach when disassembling and assembling. You need to understand how the system works so as not to disrupt its functionality.
Some owners mistakenly believe that replacing the rear pads is a simple operation similar to replacing the front ones. However, there is a risk of damage to the caliper motor or misalignment of the electronic parking brake. The correct sequence of actions and the use of special tools ensure that the work is completed efficiently and safely.
Preparation of tools and selection of components
Before starting work, it is extremely important to prepare all the necessary tools and spare parts. Without specialized equipment, you risk damaging the caliper piston, which will lead to costly repairs. A standard set of keys and sockets will not work here, since the design requires specific actions.
You will need: a set of socket heads (usually 13 and 17), a ratchet, an extension, a torque wrench for tightening the mounting bolts, and special wrench to tighten the piston. Don't forget about the mounting blades and lubricant for caliper guides. If you plan to replace brake discs as well, prepare a metal cleaner and degreaser.
When choosing new pads, you should pay attention to the manufacturer. Original parts from Skoda (VAG) provide the best match, but quality analogues from brands like TRW, ATE or Textar are also an excellent choice. It is important to check the wear indicator and the part number matches your vehicle.
- π§ Be sure to check that there is an adapter for twisting the piston, otherwise the plastic retainer may break.
- π§Ό Prepare a can of compressed air to remove dust from the caliper before installing new parts.
- π‘οΈ Buy new copper washers for the fittings if you plan to change the brake fluid or unscrew the guides.
β οΈ Attention: Never use a regular vice or pliers to press in the piston on the rear axle! This is guaranteed to damage the electric parking brake mechanism, and replacing it will cost more than all the work on the pads.
- Original (VAG)
- ATE
- TRW
- Textar
- Budget analogues
Diagnostics and checking the condition of the brake system
Before proceeding with dismantling, it is necessary to conduct a visual inspection and diagnostics. Assess the thickness of the friction lining through the caliper window or, if necessary, by removing the wheel. If the layer is worn down to metal or less than 2-3 mm, replacement is required.
Pay attention to the condition of the brake discs. They should not have deep grooves, cracks or critical runout. Also check the integrity of the caliper guide boots. A torn boot is a direct path to moisture and dirt, which causes jamming of the mechanism.
It is important to check the operation of the electronic parking brake (EPBR). Try tightening and releasing it, making sure that the mechanism operates clearly and without any extraneous sounds. If the caliper motor hums but the pads do not move, the problem may be in the mechanism itself, and replacing the pads may not completely solve the problem.
- π Inspect the brake hose for cracks, swelling, or signs of fluid leakage.
- π Measure the thickness of the brake disc with a caliper and compare it with the minimum permissible value.
- π Listen to the operation of the electric motor: extraneous noise may indicate wear of the bearing inside the caliper.
β οΈ Attention: If you feel a wobbly steering wheel or body vibration when you press the brake pedal, the problem is most likely with warped brake discs, not just the pads. In this case, replace them as a set.
Step-by-step instructions for dismantling and installation
The replacement process begins with preparing the car. Drive the car onto a level surface, apply the handbrake (if it is mechanical) or make sure that the ESC is turned off. Raise the rear of the car on a jack and place it securely on stands. Remove the wheel and allow the brakes to cool if you have just been driving.
Clean the caliper from dirt and dust. Unscrew the caliper guides, which are usually located at the top and bottom. Remove the caliper itself and hang it on a wire or hook to avoid damaging the brake hose. Remove the old pads and check the condition of the bracket they are attached to.
The most difficult stage is returning the piston to its original position. On Octavia Tour With an electronic brake, this is done by rotating the piston clockwise while pressing down. Use a special adapter. Screw in the piston all the way, but do not overdo it so as not to damage the cuff.
βοΈ Replacement Tools
Install new pads into the bracket, having previously lubricated the contact points with a special high-temperature grease. Insert the bracket with pads into place and put on the caliper. Tighten the guides, observing the tightening torque. Make sure the pads move freely in the bracket and do not bind.
- π§΄ Use only specialized grease for the guides; regular lithium grease can corrode the rubber boots.
- π© Tighten the guide bolts with a torque wrench to avoid stripping or insufficient clamping.
- π Before installing the caliper, make sure that the piston is level and not warped.
β οΈ Attention: After installing new pads, be sure to press the brake pedal all the way down several times until the pistons rest against the pads. Only after this can you start the car, otherwise you will drive without brakes.
Working with the electronic parking brake
Feature Skoda Octavia Tour is the electronic parking brake, which requires special attention. If you simply screw in the piston without turning off the system, you may upset the calibration and cause an error on the instrument panel. In some cases, computer diagnostics are required to put the caliper into service mode.
To switch to service mode, a diagnostic scanner is usually used (for example, VAG-COM or analogues). Via the menu Diagnostics β 05-Brake lock β Service mode you can release the mechanism. If you don't have a scanner, some models allow you to turn off the ESC by pressing a button and turning on the ignition, but this depends on the year of manufacture.
After replacing the pads and reassembling, it is necessary to return the system to operating mode. This can also be done through diagnostic equipment or by pressing the ESC button repeatedly with the ignition on. Make sure that the indicator on the instrument panel stops flashing and stays on steady or goes off.
What happens if you donβt turn off the ESC during replacement?
If you mechanically screw in the piston without turning off the electronics, the gears inside the caliper may break as the motor tries to press the pads against a physical obstacle. Repairing such a caliper is often tantamount to replacing the entire assembly.
It is important to check the correct operation of the brakes after all manipulations. Test the car on a safe section of the road, making sure that the braking occurs smoothly, without pulling to the side and without any extraneous noise. The error on the instrument panel should disappear after resetting the adaptations.
- π» Use a professional scanner for precise work with electronics, this will save time and nerves.
- π Make sure that the car battery is charged, as operating the ECTOC consumes significant current.
- π Do not park the vehicle on a steep slope immediately after replacement until you have checked that the parking brake is operating properly.
Before working on the electronic brake, disconnect the battery terminal to avoid accidental activation of the mechanism, but remember that this will reset the radio and clock settings.
Table of specifications and tightening torques
For safe vehicle operation, it is critical to follow the recommended fastener tightening torques. Using the wrong tool or βby eyeβ can lead to the caliper unscrewing while moving or jamming. Below is the current data for most modifications Octavia Tour.
| Fastening element | Bolt size | Tightening torque (Nm) | Special instructions |
|---|---|---|---|
| Caliper guides | M10 | 30 + 90Β° | Use a new bolt or a proven one |
| Attaching the caliper bracket | M12 | 170 + 90Β° | Lubricate threads before installation |
| Attaching the caliper to the bracket | M14 | 250 | Strictly using a torque wrench |
| Wheel bolts | M12 | 120 | Tighten crosswise |
| Brake hose | 10 mm | 25 | Replace copper washer |
Pay attention to the specific tightening of the guide bolts. It is often necessary to tighten them to a certain angle after pre-tightening with a torque. Neglecting this rule can lead to caliper play and uneven pad wear. Torque wrench - a mandatory tool in this case.
It is also important to check the condition of the brake fluid. If it was changed more than two years ago, it is better to replace it completely, since it is hygroscopic and loses its properties. This will ensure stable operation of the hydraulic system and prevent corrosion of the pistons.
Typical replacement errors and their consequences
Many owners make the same mistakes, trying to save money on repairs or not having enough experience. One of the most common problems is improperly cleaning the guides. Leaving old, dried grease will cause the caliper to stop moving, causing the wheel to overheat and seize.
Another mistake is ignoring the condition of the anthers. Even if the pads are new, but the guide boot is torn, moisture and dirt will quickly destroy the metal and rubber. This will lead to the need to replace the entire caliper assembly, which is much more expensive than simply replacing the pads.
People often forget to check the wear of the brake discs. Installing new pads on worn discs will cause them to not press completely, braking efficiency will decrease, and the pads will knock. Replacement of disks is mandatory if their thickness is below the minimum acceptable or there are deep risks.
- β Do not use WD-40 to lubricate the guides, it will corrode the rubber and cause jamming.
- β Do not try to screw in the piston without a special key, you will break the splines.
- β Don't forget to remove the wear indicator from the old pads and replace it with the new ones if they are removable.
The quality of the lubrication of the guides and the correctness of the tightening of the bolts is the guarantee that the caliper will work properly and will not jam after a month of operation.
Comparison of brands and price of spare parts
The spare parts market offers a variety of options, from original parts to budget counterparts. For Skoda Octavia Tour Original pads are quite expensive, but guarantee perfect match. However, quality analogues from proven brands are often not inferior to the original in terms of resource and braking efficiency.
Brands like ATE and TRW They are the primary suppliers to VAG conveyors, so their products are often identical to the original, but cheaper. Budget options may be suitable for a quiet ride, but on the track or when driving actively, they can show the worst performance. Always look at the manufacturerβs reputation and reviews.
The price range may vary depending on the region and the store. The original usually costs from 3000 rubles per set, while quality analogues can be found for 1500-2000 rubles. Donβt chase the lowest price, as cheap pads can contain harmful materials and wear out quickly.
- π° Original (VAG): high price, perfect quality, guarantee of compatibility.
- π Premium analogues (ATE, Brembo): average price, excellent quality, often better than the original.
- π οΈ Economy class (Ferodo, Textar): reasonable price, good price/quality ratio.
β οΈ Warning: Buying fake parts is a risk to life. Check holograms, packaging and availability of quality certificates from the seller. Fake pads can not withstand high temperatures and completely lose efficiency.
FAQ: Answers to frequently asked questions
Do I need to drain the battery before working with the electronic brake?
No, you do not need to discharge the battery, but it is recommended to check its charge. To transfer the caliper to service mode requires a stable voltage. If the battery is old and weak, the process may be interrupted, leading to an error. It is better to connect the charger or use an external power source.
Can you replace only one of the shoes on one side?
Absolutely not. The brake pads on one axle should be changed by a pair (left and right side). Replacing only one will lead to uneven braking, taking the car aside and increased wear of the disc and caliper.
What if the brakes are softer after the replacement?
There is probably air in the system. This happens if you unscrew the fitting or the piston was pressed too hard. The brake system needs to be pumped. If the air did not appear, perhaps the piston did not fully rise to the working position, and you need to press the pedal again several times.
How often should I change the rear brake pads on the Octavia Tour?
The resource of the rear pads is usually larger than the front and ranges from 40 to 80 thousand kilometers, depending on the driving style and operating conditions. However, the condition must be checked at each scheduled maintenance. Do not focus only on the mileage, but use a visual inspection.
Can I use lubricant for calipers from other brands?
Not recommended. The lubricant should be compatible with the rubber seals of your caliper. Specialized lubricants for calipers (usually blue or red) withstand high temperatures and do not destroy rubber. Conventional lubricants can cause swelling and destruction of anthers.
Regular check of the brake system and timely replacement of pads is not only saving money in the future, but also guaranteeing your safety on the road.