The braking system is a critical safety element of any vehicle, and Skoda Octavia Tour This is no exception. Over time, the brake pads wear out, which inevitably leads to a decrease in the effectiveness of braking and the appearance of extraneous sounds. Ignoring this process can lead to costly calipers repairs or even a road emergency.
Owners of cars of this model often face the need to replace consumables on their own to save money in the service. However, the procedure for replacing the rear brake pads Octavia Tour has its own technical features, especially concerning the parking brake mechanism integrated into the caliper. Incorrect actions can lead to the inability to install a new element or its premature wear.
Design features of the rear brake mechanism
Rear brakes on the Skoda Octavia Tour differs from the front by the presence of a complex parking brake mechanism inside the caliper. Unlike simple floating calipers, a screw mechanism is used here, which must be compressed correctly before installing new pads. Understanding this mechanics is the key to a successful repair.
Many owners make the mistake of trying to press the caliper piston with a conventional strubbine or lever, as is done on the front wheels. This is categorically unacceptable, as it leads to a breakdown of the internal threading of the handbrake mechanism. To work, you will need a special tool or adapter that allows you to rotate the piston when it is pressed.
In addition, it is worth paying attention to the condition of the guide calipers. They should move freely, and the lubricant on them should be clean and fresh. Clogged or corroded guides cause the pads to not move away from the disc after the pedal is released, which leads to overheating and jamming of the wheel.
โ ๏ธ Warning: Never use a screwdriver to press the caliper piston if it has a handbrake mechanism on it. This is guaranteed to break the internal thread, and the caliper will have to be changed entirely.
Selection of quality consumables and tools
Selection of components for Skoda Octavia Tour you need to approach it with maximum responsibility. Original spare parts from Skoda (VAGs) are usually of excellent quality but are expensive. There are many quality analogues on the market, such as TRW, ATE, Textar or Brembo, which are often delivered to the conveyor.
When buying, pay attention to the articles and the presence of all the necessary fasteners in the kit. Often new pads come complete with metal brackets (clips) that attach them to the caliper. These braces lose their elasticity over time, and their replacement is mandatory to prevent vibrations and creaking.
From the tools, you will need a standard set of heads, a dynamometer key for tightening the caliper mount bolts and, most importantly, a tool for twisting the piston. If you do not have a professional set, you can use special adapters or even passages with plastic linings, if they are suitable in size.
- ๐ ๏ธ Dynamometer key for precise tightening of bolts (moment 30 Nm)
- ๐ง Special tool for twisting the piston caliper
- ๐งผ Brake cleaner and copper lubricant for guides
- ๐งค Gloves and safety glasses for working with chemistry and dust
Step-by-step instructions for replacing pads
The replacement process begins with safely raising the vehicle. Install Octavia Tour Then, put the brakes on the first hand and put them on the first hand. Remove the wheel and carefully examine the brake disc for the presence of deep furrows or cracks. If the disc is worn to a critical point, it should also be replaced.
Next, the guide calipers must be unscrewed. Usually it's two bolts on the bottom and on top. After their removal, the caliper is removed from the bracket. Be careful: do not hang the caliper on the brake hose, hang it on a wire or hook, so as not to damage the rubber hose and not to disturb the tightness of the system.
Now you can remove the old pads. Check them for uneven wear. If one side has worn off more than the other, it may indicate problems with the guides or piston. Clean the seats on the caliper bracket with a metal brush and apply a thin layer of heat-resistant lubricant.
Before installing new shoes, it is necessary to return the piston to its original position. Insert the tool into the piston slot and rotate clockwise while slightly pressing inside. The process requires patience, as the piston must spin completely to the point.
โ๏ธ Preparing for replacement
What to do if the piston does not twist?
If the piston is not twisting, it may have jammed or the handbrake mechanism is damaged. Do not use excessive force, as it can break the thread. In this case, it is better to contact professionals or replace the caliper in the collection.
Symptoms of wear and diagnostics of the brake system
Determine the need to replace the rear pads can be not only by mileage, but also by the behavior of the car. The first and most obvious signal is a characteristic squeak or squeak when braking. Many manufacturers equip the pads with metal wear indicators, which, when the disc is touched, emit a sharp sound.
Another sign is vibration of the steering wheel or the entire body when pressed on the brake pedal. This may indicate not only wear of the pads, but also deformation of the brake disc or problems with guides. Also pay attention to the length of the braking distance - if it has become noticeably longer, this is an alarming sign.
Visual inspection through the spokes of the disc can show the thickness of the friction lining. If it is thinner than 2-3 mm, replacement is required immediately. In addition, traces of leakage of brake fluid from the caliper also require attention and may be associated with wear of the piston sealing rings.
- ๐ The appearance of metal grinding or squeaking when braking
- ๐ Increased braking distance and "cotton" pedal
- ๐ฅ Smell of burning after short distance trip
- ๐ง Vibration of the steering wheel or body during emergency braking
- Once every six months
- Once a year
- Only when there is noise
- I never check
Typical replacement errors and their consequences
One of the most common mistakes is ignoring the cleaning of seats. Mud and rust on the bracket prevent the pads from moving freely, which leads to their jamming and rapid overheating. Even a new shoe can wear unevenly if it is stuck in a dirty guide.
Another critical mistake is the wrong tightening of the bolts. If the calipers are tightened too weakly, the caliper may shift and jam. If too much, you can tear the thread in the aluminum swivel fist, which will require expensive repairs. Always use a dynamometer key.
Incorrect assembly of the hand brake mechanism can also cause the wheels to not rotate or, conversely, the handbrake will not hold the car. After installing new shoes, be sure to check the brake pedal and the handbrake on the standing car.
โ ๏ธ Forget about tightening bolts "by eye". The moment of tightening of the guide calipers is strictly 30 Nm, and the bolts of attaching the caliper to the rotary fist are 100 Nm (check by manual).
| element | Recommended tightening torque (Nm) | Thread type | Note |
|---|---|---|---|
| Bolts of calipers guide | 30 | M10x1.25 | Use a torque wrench |
| Caliper mounting bolts | 100 | M12x1.5 | Tighten firmly |
| The guide-bracket bolt | 25 | M10x1.25 | Check the state of the thread |
| A screw nut bolt. | 200+180ยฐ | M24 | Single-use nut, replacement is mandatory |
Final configuration and verification after installation
After all the pads are installed and the wheels are screwed, you can not immediately go on the road at high speed. The laundry procedure must be performed. To do this, gently press the brake pedal on a standing car several times so that the pistons take the correct position.
The first few kilometers of movement should be avoided sharp braking and extreme loads. This will allow new pads to adapt to the disk. During the run-in, a slight smell or a small haze may appear, which is the norm.
Be sure to check the level of brake fluid in the tank. When installing new pads, the pistons sink deeper, and the fluid level can rise. If it has reached a maximum, some of the liquid should be pumped out to avoid overflowing and leaking out when the system is heated.
Before starting the movement, be sure to check the work of the hand brake on the slope. If the car rolls, it is possible that the handbrake mechanism is not fully unlocked or requires adjustment.
Properly laundrying new pads in the first 200-300 km is critical for their durability and braking efficiency in the future.
FAQ: Frequently asked questions
How long do you have to wear the ล KODA Octavia Tour?
The resource of the rear pads depends on the driving style and operating conditions. On average, they serve from 40,000 to 60,000 km of run. However, with frequent trips around the city with traffic jams, wear and tear can come earlier.
Can I change the pads without replacing the brake disc?
Yes, if the thickness of the brake disc is not below the minimum permissible (usually 10 mm for the rear discs) and there are no deep furrows or cracks on it. However, with heavy wear of the pad, the disc also often needs to be replaced to ensure uniform contact.
Do I need to lubricate new shoes?
Lubricate only the back side of the pads (where there is no friction layer) and the guide calipers. In no case do not apply lubrication to the working surface of the pads or brake disc, as this will lead to a loss of braking efficiency.
What if the brake pedal โfailsโ after replacement?
There is probably air in the system. The brake system needs to be pumped. Also check if you have fully pressed the caliper pistons before installing the wheels. If the problem is not solved, contact the service.
How to distinguish original shoes from fake?
Original spare parts have a clear marking, high-quality packaging and a smooth seam. Counterfeiting often has casting defects, uneven friction layer thickness and lack of protective coatings. Buy your supplies from trusted suppliers.