The brake system must be checked both during maintenance and in case of unsatisfactory operation of the brakes

Checking the brake pedal position

To check the pedal position, you will need a ruler.

Start the engine and press the brake pedal vigorously several times

Pull the brake pedal up with your hand until it stops

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris

Release the pedal and measure the distance "H" from the pedal pad to the floor. The distance should be 174 mm

If the pedal stroke does not correspond to this value, then adjust the position of the brake pedal

Check the free movement of the brake pedal, to do this, move the pedal with your hand until the pedal stops moving without resistance.

We determine the freewheel value by the ruler, which should be 3-8 mm.

If the value does not match, it may be caused by the following reasons:

  • - jamming of pistons in the main brake cylinder;
  • - plunger jamming in the brake booster

If the pedal stops when pressed almost at the floor, then this indicates the presence of air in the hydraulic brakes or severe wear of pads, discs or drums.

If there is air in the system, then the pedal stops further from the floor with several repeated presses.

If the pedal, pressed all the way down and held in this position, gradually moves to the floor, fluid has leaked from the hydraulic drive or the main brake cylinder is faulty. These malfunctions are very dangerous, so immediately identify the cause of the malfunction and fix it!

Checking the tightness of the hydraulic brake drive

The tightness of the components and parts of the hydraulic drive must be checked with an assistant, who must create pressure with the brake pedal and keep the pedal pressed during inspection.

If leaky connections are detected, it is necessary to tighten the clamps, plugs, nuts. Replace hoses and pipelines with mechanical damage.

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris

We inspect the main brake cylinder with the tank at the junction of the tank

We inspect the connection tubes with the main cylinder and with the ABS module

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris

Check the connection points of the brake tubes with the hoses of the front brake mechanisms

Check the connection points of the brake tubes with the hoses of the front brake mechanisms

If necessary, tighten the joints or replace defective parts

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris car

Inspect the front brake hoses

We inspect the rear brake hoses. They should not have tears, cracks and scuffs, swollen hoses

Checks of brake parts and components of Hyundai Solaris

We inspect the connections "A" of the hose tips with the working cylinders and the valves "B" for the air release of the brake mechanisms of the front wheels

Checks of brake parts and components of Hyundai Solaris

We look at the connections "A" of the tips of the pipelines with the working cylinders and valves "B" for the air release of the brake mechanisms of the rear wheels

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris

We pry with a screwdriver and take out the pistons of the fastening of the brake tube casing

We squeeze out the fixing clips of the protective casing

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris

And remove the casing

We check the fastening of the tubes in the holders on the bottom of the body

We also check the remaining mounting points of the brake tubes

Checking the vacuum brake booster

If the brake pedal has become elastic, the father-in-law's pedal force during braking has increased compared to the usual one, you need to check the operation of the vacuum booster

When the engine is not running, we press the brake pedal five or six times.

Holding the pedal down, start the engine. The brake pedal should move forward in this case. If this did not happen:

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris

  • - check the fit density of the vacuum hose on the fitting of the vacuum brake booster
  • - check the fit density of the vacuum hose on the intermediate tube

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris car

To check the check valve of the vacuum booster, you need:

  • - squeeze the bent ends of the vacuum hose clamp from the side of the vacuum amplifier to the check valve fitting and slide the clamp along the hose

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris car

  • - remove the check valve fitting from the vacuum hose
  • - also remove the check valve fitting from the vacuum booster hose from the side of the intermediate tube

We firmly insert the pear into the hose from the side of the vacuum brake booster and squeeze the rubber pear. The air must pass freely through the check valve.

We release the compressed pear. If the pear is not straightened, the check valve is working. If the check valve allows air to flow in both directions, the vacuum hose must be replaced

Checks of brake parts and components of Hyundai Solaris

When installing the check valve, it is necessary to pay attention to the fact that the fitting "A" of white color is installed in the vacuum hose on the side of the vacuum amplifier, and the fitting "B" of black color is installed on the side of the intermediate tube.

Checking pads, discs and drums

In the front brake mechanisms on the pads there are alarms for the extreme wear of the pads.

They are metal plates that are attached to the pads. If the pads are erased before this alarm, then a characteristic creaking sound will be heard at the moment of braking.

This is a metal plate in contact with the disc and you can hear this creaking.

After the appearance of such a creak, it is necessary to replace the brake pads as soon as possible.

To fully check the wear of the brake pads and discs, we install the car on the lift or brake it and install the shoes under the rear wheels.

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris

We loosen the tightening of the wheel fastenings

Lifting and installing supports under the front of the car supports

Finally unscrew the mounting nuts and remove the wheels

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris

Check the condition of the brake pads of the front wheels through the hole in the caliper

It is necessary to measure only the thickness of the friction pads (shown on the removed pad)

Checks of brake parts and components of Hyundai Solaris

Measuring the thickness of the brake disc

Control dimensions:

  • - the nominal thickness of the brake disc is 22 mm;
  • - the minimum thickness of the brake disc is 20 mm;
  • - maximum thickness fluctuation (measured at eight points) - 0.02 mm;
  • - the maximum runout of the disk when checking on a car is 0.04 mm;
  • - the minimum thickness of the friction lining of the brake pad is 2 mm.

Check the mobility of the pistons and guide fingers of the brake mechanisms with a screwdriver inserted between the disc and the brake pad

Checks of brake parts and assemblies of Hyundai SolarisChecks of brake parts and components of Hyundai Solaris car

If the pads cannot be moved, it means that the piston in the brake cylinder or the guide fingers of the caliper are jammed

We inspect the jumpers of the air cooling channels of the disk

If cracks are found in the jumpers, the disk must be replaced

Checking the condition of the rear wheel brakes

If disc rear brakes are installed on the car, then we perform the check as well as for the front brakes

We install the anti-rollback stops under the front wheels and turn on the first gear or on the machine to the "P" position

We lift and install the rear part of the car on the stops.

Finally unscrew the mounting bolts and remove the wheels

Checks of brake parts and assemblies of Hyundai Solaris carChecks of brake parts and components of Hyundai Solaris car

Removing the brake drum

We measure the thickness of the friction linings of the drum brake mechanism of the rear wheels

If the thickness of at least one pad is less than acceptable, replace the brake pads

Checks of brake parts and components of Hyundai Solaris

We measure the diameter of the inner cavity of the brake drum with a caliper

If the diameter is larger than the permissible one, we replace the brake drum

Control dimensions of the brake mechanisms of the rear wheels:
  • - nominal diameter of the working surface of the brake drum - 204 mm;
  • - the maximum diameter of the working surface of the brake drum is 205.2 mm;

Rear wheel disc brakes:

  • - the thickness of the brake disc is 10 mm;
  • - the minimum thickness of the brake disc is 8.4 mm;
  • - the maximum fluctuation of the disc thickness measured at eight points -,01 mm;
  • - the maximum runout of the brake disc is 0.05 mm;
  • - the thickness of the brake pad lining is 10 mm;
  • - the minimum thickness of the friction lining is 2 mm;
  • - the maximum diameter of the brake disc of the parking brake system with wear is 169 mm.
Parking brake check

The parking brake must keep the car on a slope of 25% when moving the parking brake lever to the highest position (all the way).

  1. To check the correct adjustment of the parking brake, find an overpass or loading ramp with a height of H = 1.25 m and an entrance length of L = 5 m near the parking place of your car. This ratio corresponds to a slope of 25%.

Checks of brake parts and components of Hyundai Solaris

  1. In the absence of such a ramp for a simplified parking brake check, place the car on a flat platform.
  2. Set the gearshift lever to the neutral position, lift the parking brake lever completely.
  3. Get out of the car and try to move it from its place. If this has been done, adjust the parking brake system.