Caution! Brake hoses must not come into contact with oil or petrol, and they must not be coated with varnish or underbody protection products.
Check the hoses for free movement by moving the front wheels to their extreme positions. The hoses should sag slightly, not twist, and not touch anything.
The front brake hose must be removed in the following order. Mark the position of the wheel relative to its hub with a marker. Loosen the wheel fastening, place the front of the car on stands. Remove the wheel in the area of the hose being replaced.
Press the brake pedal lightly and hold it in place (see fig. 11.3).
Unscrew the brake drive pipe with the union nut from the brake hose coupling head (right arrow, Fig. 11.57). Unscrew the brake hose from the caliper (left arrow).
Caution! When unscrewing, hold the brake hose with a wrench by the Allen key to prevent it from turning in the mounting bracket (holder).
When loosening, brake fluid may leak out and must be collected and disposed of. Install the front brake hose in the reverse order, first connecting the brake hose to the caliper. Set the wheels for straight-ahead driving. Insert the brake hose into the mounting bracket. Tightening torque of the hose nipple nut and pipe tip - 14 N·m (1.4 kgf·m). Connecting the hose to the front brake caliper - 24±2 N·m (2.4±0.2 kgf·m)
For the front brake hoses, on a raised vehicle, check the freedom of movement of the hose when the steering is shifted to the extreme positions. Repeat this operation on a stationary vehicle.
Make sure the hose (fig. 11.58) not twisted and in no case touching body parts. Bleed the brake system and check its safety.
Removing the rear brake hose should be done in a similar order. In this case, it is necessary to open the valves (1, Fig. 11.59) clamp (2) of the pipes. Disconnect the pipes from the hoses. Unscrew the nuts and remove the plastic gasket (3). Unscrew the brake hose from the caliper.
When installing the rear brake hose, the pipe clamps must be replaced. Pay attention to the position of the pipes (fig. 11.60).
First connect the brake hose to the caliper and tighten its fastener, and then tighten the fastener of the brake hose to the pipeline (fig. 11.61). Insert the brake hose into the mounting bracket.
Caution! Do not twist the brake hose under any circumstances during installation.
Nut tightening torque (M10x1 and M12x1) hose fitting and pipeline tip – 14 Nm (1.4 kgf·m).
Connect the hose to the rear brake caliper with a hollow bolt (M10x1) using a torque of 40 N·m (4.0 kgf·m).