Rear drums on the ŠKODA Octavia Tour: device, diagnostics and replacement

Introduction: Why drum brakes are still relevant on the Octavia Tour

In the era of widespread transition to disc brake systems ŠKODA Octavia Tour (especially in versions with engines 1.6 MPI and 1.4 TSI until 2017) continues to be equipped with rear drum mechanisms. This manufacturer's decision often raises questions among owners: why not discs? The answer lies in the balance between reliability, ease of maintenance and cost of operation.

Drum brakes on Octavia Tour (including restyled models A7 and A5) demonstrate a number of advantages: they are less susceptible to wear from aggressive driving, better protected from dirt and moisture, and their service life in the urban cycle often exceeds 100,000 km. However, this system also has weaknesses - for example, tendency to overheat during long descents from mountain roads, which may lead to reduced braking efficiency. In this article we will look at how to diagnose faults, select the right spare parts and perform replacements without common mistakes.

Rear drum brakes on Octavia Tour: what's inside

Rear brake design ŠKODA Octavia Tour includes several key components, each of which requires attention during maintenance:

• 🔧 Brake drum - a cast iron or aluminum body with a working surface, which is attached to the wheel hub. The drum diameter varies depending on the model generation (for example, for Octavia A5 — 230 mm, for A7 - 253 mm).
• 🛠️ Pads — friction linings that are pressed against the drum during braking. B Octavia Tour pads with an integrated automatic gap adjustment mechanism are used.
• ⚙️ Working cylinder - a hydraulic element that converts brake fluid pressure into mechanical force. On Octavia cylinders with two pistons are installed (for uniform pressing of the pads).
• 🔗 Parking brake cable — connects the handbrake lever with the release mechanism inside the drum. On models with DSG The cable often requires adjustment after replacing the pads.

Design Feature Octavia Tour — availability automatic slack adjuster, which compensates for pad wear. However, this mechanism can jam if dirt or corrosion gets in, resulting in uneven braking or overheating. For example, if after replacing the brake pads the brake pedal becomes “soft,” the problem often lies in the regulator.

It is important to consider that Octavia Tour with the system ESP ABS sensors are integrated into the hub, not the drum. This makes it easier to remove the drum, but requires caution when working with the sensor connectors.

Signs of Trouble: When to Check Your Rear Drums

Diagnose problems with drum brakes on ŠKODA Octavia Tour based on several characteristic symptoms. Some of them are obvious, others require careful analysis:

• 🚨 Creaking or squealing when braking - indicates wear on the pads or foreign particles getting between the drum and the linings. On Octavia A7 This sound often appears when the pads are worn down to 2–3 mm.
• 🔥 Drum overheating — after stopping, the wheel is hot to the touch. This could be the result of a stuck wheel cylinder or worn shoes that won't release from the drum.
• 🛑 Pulling the car to the side when braking - indicates uneven wear of the pads or deformation of the drum (for example, after overheating).
• 🔄 Increased brake pedal travel - often associated with air getting into the hydraulic system or wear of the cuffs of the working cylinder.

One of the most insidious signs is uneven pad wear. On Octavia Tour This may appear as a "jerky" behavior when braking at low speeds. The reason usually lies in a jammed piston of the working cylinder or corrosion on the guide pads. You can check this by removing the drum and visually inspecting the condition of the mechanism.

⚠️ Attention: If after replacing the pads or drums the brake pedal becomes “wobbly”, do not rush to bleed the system. First check to see if the automatic slack adjuster is stuck - this is a common problem with Octavia A5 after 2010.

Selection of spare parts: original vs analogues for Octavia Tour

When replacing rear drums or pads with ŠKODA Octavia Tour owners are faced with a dilemma: buy original parts or analogues. Original spare parts (e.g. drums 6Q0 615 601 for Octavia A7) guarantee compatibility, but their price can exceed 10,000 rubles per set. Alternative brands offer more budget-friendly solutions, but it is important to take into account the nuances.

Part type	Original (item)	Analogue (brand, article)	Notes
Brake drum	6Q0 615 601 (A7)	TRW GDB340, ATE 24.0120-0159.2	Analogs TRW and ATE often exceed the original in terms of service life, but require a balancing check.
Rear pads	6Q0 698 451	Brembo P 64 020, Ferodo FDB1636	Pads Ferodo softer than the original, but less dusty. Brembo — the best choice for aggressive driving.
Working cylinder	6Q0 615 123	Febi 23630, LPR 15200	Cylinders Febi often come with updated brake fluid resistant cuffs DOT 4.
Handbrake cable	6Q0 711 865	TRW JPC1449, Febi 31662	When replacing the cable, be sure to lubricate it lithol - this will extend the service life by 2 times.

When choosing analogues, pay attention to ECE R90 certification - this is a guarantee that the part has been tested for compatibility with the system ABS/ESP yours Octavia Tour. For example, drums ATE often have improved cooling due to additional stiffening ribs, which is important for models with engines 1.8 TSI and 2.0 TDI.

⚠️ Attention: On Octavia Tour with the system Start-Stop (for example, models 2015–2017) it is not recommended to install pads with a high metal content in the friction composition. They can cause increased wear on the drums and vibration when braking.

Step-by-step instructions: replacing rear drums on an Octavia Tour

Replacing drums with ŠKODA Octavia Tour requires accuracy and adherence to sequence of actions. Below are instructions that are relevant for models A5 and A7 (2010–2017). Before starting work, make sure you have:

• 🔧 Set of sockets and socket wrenches (T30, T40, 13 mm, 15 mm).
• 🛠️ Puller for retaining rings (if you plan to replace the wheel bearing).
• ⚙️ Lubricant for guide pads (Molykote G-4500 or analogues).
• 🔗 New drums, pads and working cylinders (if necessary).

Step 1: Preparing the car

Jack up the rear Octavia Tour and remove the wheel. Be sure to chock the front wheels and engage first gear (or Parking for DSG). Release the parking brake cable by turning the adjusting nut on the equalizer under the bottom.

Step 2: Removing the Drum

Unscrew the guide pin (usually under T30) and gently knock down the drum using a rubber mallet. If the drum cannot be removed, check to see if it is stuck on the hub due to corrosion. In this case, use a puller or treat the joint with penetrating lubricant (WD-40).

Step 3: Inspect and Replace Components

After removing the drum, inspect:

• Condition of the pads (minimum thickness of the friction layer - 1.5 mm).
• Mobility of the working cylinder (pistons must move freely when the brake pedal is pressed).
• Integrity of springs and spacer bars.

If the pads or cylinder require replacement, do it now. When installing new pads, be sure to lubricate the guides and contact points with the drum.

Step 4: Installing a New Drum

Before installing a new drum, clean the hub seat from rust and apply a thin layer of copper grease. Screw the guide pin to a torque 8 Nm. After assembly, adjust the parking brake by turning the adjusting nut until there is slight resistance when turning the wheel (2-3 clicks on the ratchet).

What to do if the drum does not sit in place?

If the new drum does not fit on the shoes, check that the slave cylinder is fully retracted. To do this, unscrew the bleeder fitting and press the pistons in with a clamp. Also make sure that the automatic slack adjuster is not blocked.

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes when working with rear drums Octavia Tour. Here are the most common ones and ways to prevent them:

• 🔧 Incorrect pad installation — if you mix up the left and right pads, the automatic slack adjuster will not work. On Octavia The left and right pads are mirrored, but not interchangeable!
• 🛠️ Ignoring the state of the working cylinder - if the cylinder cuffs are worn out, the brake fluid will leak and the pedal will become “soft”. Always check the cylinder for leaks before installing the drum.
• ⚙️ Lack of lubrication on the guides - this leads to jamming of the pads and uneven wear. Use only high temperature lubricants (e.g. Slipkote 220-R DBC).
• 🔥 Handbrake cable tightening - if the cable is too tight, the pads will be constantly pressed against the drum, which will cause overheating. The optimal tension is 3-4 clicks of the ratchet mechanism.

Another common problem is improper bleeding of brakes after replacing the cylinders. On Octavia Tour with ESP bleeding should begin from the rear right wheel, using a diagnostic scanner to activate the valves ABS. Without a scanner, air may remain in the system, which will lead to a “cotton” pedal.

⚠️ Attention: If vibration occurs when braking after replacing the drums, check the hub runout. On Octavia A7 permissible runout - no more than 0.05 mm. Exceeding this value requires replacing the wheel bearing.

Maintaining and extending the life of drum brakes

To keep the rear drums on ŠKODA Octavia Tour last as long as possible, follow these recommendations:

• 🔧 Regular cleaning — every 20,000 km, remove dust and dirt from the surface of the drums. Use a soft brush and brake cleaner (Brembo Cleaner).
• 🛠️ Checking the brake fluid level - liquid DOT 4 hygroscopic and requires replacement every 2 years. On Octavia With a mileage of more than 100,000 km, flushing the system is recommended.
• ⚙️ Checking the handbrake cable — every 10,000 km, lubricate the cable and adjust its tension. A jammed cable is a common cause of premature pad wear.
• 🔥 Gentle driving style — avoid prolonged braking on descents (use engine braking). This will prevent the drums from overheating.

Pay special attention brake fluid. On Octavia Tour with the system ESP It is unacceptable to mix liquids of different standards (for example, DOT 4 and DOT 5.1). Also avoid getting moisture into the system - this leads to corrosion of the working cylinders and a decrease in the boiling point of the fluid.

If you often drive off-road or in high humidity conditions, it is recommended to remove the drums every 15,000 km and clean the internal surfaces of rust. This is especially true for Octavia Tour with aluminum drums, which are more susceptible to corrosion than cast iron.

FAQ: answers to frequently asked questions about Octavia Tour rear drums

Is it possible to install disc brakes instead of drum brakes on the Octavia Tour?

Technically possible, but this will require replacing the hubs, brake lines and reflashing the unit ABS/ESP. Such intervention is not certified by the manufacturer and may lead to problems with passing technical inspection. If disc brakes are critical to you, consider purchasing Octavia with factory disk system (for example, versions with engines 2.0 TSI or RS).

How often do you need to change the rear drums on an Octavia Tour?

Drum life depends on driving style and operating conditions. On average:

• For the urban cycle - 120,000–150,000 km.
• For aggressive driving (frequent braking) - 80,000–100,000 km.
• When operating in conditions of high humidity or salty roads - 60,000–80,000 km.

Focus on the thickness of the working surface of the drum: the minimum acceptable value is 228 mm for Octavia A7 (with an initial diameter of 230 mm).

Why does the rear wheel on the Octavia Tour squeak after replacing the pads?

Creaking can occur for several reasons:

• Low-quality pads with a high metal content.
• Lack of lubrication on the guide shoes or contact points with the drum.
• Sand or dirt getting between the block and the drum.
• Drum deformation (check runout with indicator).

Solution: Remove the drum, clean all surfaces and apply special lubricant to the guides. If the squeak remains, replace the pads with silent ones (for example, Ferodo Premier).

How to bleed the brakes on an Octavia Tour with ESP?

For bleeding brakes with a system ESP you will need a diagnostic scanner (for example, VCDS or Launch X431). Procedure:

1. Connect the scanner and select the "Bleeding ABS" function.
2. Start with the right rear wheel, then left rear, right front and left front.
3. Follow the scanner instructions to activate the valves ESP.
4. Add brake fluid to the level MAX after pumping.

Without a scanner it will not be possible to completely bleed the system - air will remain in the valves ABS.

What lubricant should I use for the guide pads on the Octavia Tour?

High temperature lubricants are suitable for guide shoes and contact points with the drum:

• Molykote G-4500 - the best choice for Octavia Tour (works at temperatures up to 1400°C).
• Slipkote 220-R DBC - Resistant to brake fluid and moisture.
• Permatex 24110 - a budget option, but requires more frequent updates.

Do not use Litol-24 or Solid oil - they cannot withstand high temperatures and can cause jamming of mechanisms.