Attention! The laying of the metal pipes of the brake system should be entrusted to a specialized workshop, because this operation requires a certain amount of experience.
As flexible connections between rigidly fixed and moving parts of the car, for example, with calipers, brake hoses are designed for a certain pressure.
If any damage visible to the naked eye appears on the hoses, the hoses must be replaced.
Long life hoses can swell so that their bore becomes very narrow and brake fluid does not return from the wheel brake cylinder to the master cylinder and the brakes become hot. If in this case it is opened, the bleeder valve and the wheel is unlocked, then this is a sign of the indicated defect in the brake hose.
Vehicles with ABS
Attention! If one of the chambers of the brake fluid expansion tank has been completely emptied, for example, due to leakage or carelessness when bleeding the brake system, then air also enters the ABS hydraulic booster pump. In this case, bleeding the brake system should be carried out in a workshop using a special device.
Attention! Protect brake hoses from contact with oil and kerosene, do not varnish them or coat them with an anti-corrosion protection agent for the underbody.
Removing
1. Jack up the car and jack it up.
2. Release a brake hose from holders.
3. Disconnect a brake hose at first from the main pipeline, and then - from a support, without allowing at the same time twisting of a hose.
Attention! Collect leaked brake fluid with a rag. If necessary, plug the hole in the pipeline from the brake master cylinder with a suitable plug. Installation
Attention! Install only those brake hoses approved by the vehicle manufacturer.
4. Lay the new brake hose so that it sags and is not kinked.
5. Connect the brake hose to the pipeline and tighten it to 14 Nm.
6. Connect the brake hose to the caliper and tighten to 35 Nm.
Attention! If necessary, replace the old O-ring on the hose with a new one.
Attention! Bleed the brake system in a workshop using a bleeder.
7. Lower the car on wheels.
Attention! Make sure that:
- A) brake hoses are securely connected,
- b) brake hoses are fixed in holders,
- V) brake bleeders are screwed on,
- G) there is enough brake fluid in the expansion tank.
8. Perform a brake leak test by starting the engine.
To do this, depress the brake pedal with a force of 200-300 N (20-30 kg) and hold it for about 10 seconds. The pressure in the system and, accordingly, the resistance of the brake pedal, should not decrease. Check all connections for tightness.
9. Carry out a test drive and check the operation of the brakes on a road with light traffic.
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