How to change the front pads "Polo Sedan"

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The brake system is the basis of the safety of any vehicle. The main component is precisely the front pads. "Polo-Sedan" is a car that is in demand among car owners. Consider in more detail the features of the selection, replacement, maintenance of brake systems in it.

Purpose

The operation of the front pads ("Polo Sedan") is based on friction. At the heart of the braking system are friction mechanisms that are mounted on the wheels. Friction parts are brake drums or discs, as well as pads. The car is braked by pressing the pads against the brake disc (or drum) using a hydraulic drive.

This process is accompanied by the transformation of one type of energy into another. When the pads come into contact with the drum, friction occurs between the parts, which causes them to heat up. "Volkswagen Polo" due to the transition of kinetic energy into thermal energy losesspeed, stops.

Operation principle

In the Volkswagen Polo, the brake mechanism of the front wheels is set in motion by the movement of the piston of the working cylinder. The design is classic, practically no different from other vehicles.

The piston presses the front brake pads against the disc. In "Polo-Sedan" each pad (outer and inner) includes a friction lining and housing.

When to change

The front pads "Polo-Sedan" must be changed according to the recommendations offered by the manufacturer. For this vehicle, it is recommended to change them after 30,000 km or at even service intervals. The replacement of the front pads "Polo-Sedan" is also carried out in case of their non-working state (when they are scattered, cracked, worn out).

In order to avoid malfunctions that can cause the destruction of other fragments of the brake mechanism, it is advisable to carry out a complete diagnosis of the car 2-3 times a year.

Within its framework, the operation of the entire mechanism is checked, as well as a visual inspection of the pads, measurement of the thickness of the friction linings (it should not be less than 2 mm).

Faulty front pads "Polo-Sedan" give themselves a specific rattle, a decrease in the efficiency of the stopping process, an increase in braking distance. If at least one of the signs is found, it is necessary to carry outdiagnostics. Otherwise, both the owner of the car and his passengers will be in danger while driving.

You must understand that the replacement is carried out in pairs (on both front wheels).

Choice

The Volkswagen Polo is a fairly popular car, so many companies produce spare parts for it, including brake pads. When choosing them, it is advisable to give preference to original spare parts. How to change the front pads on the Polo Sedan? First you need to pick up certain tools:

• balloon wrench;
• jack;
• wheel chocks;
• ring wrench "12" or hex key "7";
• flathead screwdriver;
• mount;
• pliers;
• copper or aluminum wire;
• dry clean rags;
• grease.

How to find out if a replacement is needed

Significant wear of the braking system is signaled by an unpleasant metallic grinding that occurs in the area of the front wheels when the Volkswagen Polo is stopped.

If these symptoms are present, it is urgent to replace the front brake pads. The current situation should not be left “for later”, as this can cause rapid complete wear of the car’s brake discs.

This vehicle has a special system that notifies of significant wear of the brake pads installed in the car. They were made inin the form of a thin steel strip attached to the base of a shoe made of metal. After a strong wear of the material, the metal strip at the time of braking begins to touch the brake disc, an unpleasant characteristic sound appears. It notifies its "master" of the critical condition of the installed brake elements.

In some trim levels there are automatic systems that alert you to heavy wear on the brake pads. They operate on the principle of a quick circuit of the installed sensor with a contact to the ground of this vehicle during direct braking. This happens by approaching the sensor to the disc of the brake system, which is isolated from the mass of the machine by the sensor, it is located on one of the existing pads. In the cabin, the warning light will be on.

How can I make a replacement

Learn how to change the front brake pads. "Polo-Sedan" must be placed on a horizontal flat surface, raise the hood, unscrew the cap of the reservoir with brake fluid. Armed with a wheel wrench, you need to unscrew all the wheel bolts.

The body of the car is lifted with a jack, the fastening bolts are unscrewed, the wheel is removed. The steering wheel turns in the direction of the retracted wheel. A screwdriver is placed between the piston of the working cylinder and the inner shoe, the piston is pressed in, the shoes are spread.

With the “12” key, the bolt fixing the caliper to the guide pin, which is located below, is unscrewed. Next, the guide pin is pulled out.

In the same way, the bolt fixing the caliper to the upper pin is unscrewed. The outer and inner brake shoe is removed, the guide pins are wiped with a clean rag, then lubricated with grease. Next, new pads are installed, installation is underway.