Removing
1. Mark with paint the position of the front wheels relative to the hub. This will allow the assembly to set the balanced wheel in its original position.
2. Loosen the wheel bolts. The vehicle must be on wheels during this operation.
3. Install the car on the goats and, having unscrewed the wheel bolts, remove the wheels.
Attention!. Jacking up the vehicle carries the risk of injury. Familiarize yourself with the provisions before performing these works relevant chapter.
Attention! If the caliper is removed only for dismantling the brake pads or brake disc, then the brake hose does not need to be disconnected from the caliper. In this case, secure the caliper with the hose connected with a wire to the body so that the brake hose is not twisted or stretched.
4. Disconnect the brake hose from the caliper, see relevant chapter.
Attention! When the brake circuit opens, brake fluid flows out. Collect the fluid in a container designed for brake fluid. Brake fluid can be taken from the expansion tank using a siphon before dismantling the caliper.
5. Remove the brake pads, see relevant chapter.
6. Front right wheel brake caliper. Unscrew the bolt 1 and disconnect the plug of the pad wear sensor from the caliper 2 (see illustration).
7. Brake caliper front and rear wheels. Unscrew the mounting bolts 3 and disconnect the brake shoe guide 4, respectively, from the steering knuckle or from the trailing arm (see illustration).
Attention! The brake shoe guide bolts are tightened to a high torque. Make sure the vehicle is firmly on stands. These bolts can be loosened before the vehicle is jacked up. When unscrewing the bolts, the wrench should be placed horizontally.
Attention! If the caliper will not be replaced, then take measures so that the piston of the brake cylinder is not inadvertently squeezed out.
Installation
8. Install the brake shoe guide 4 in place and secure with two new self-locking bolts 3, respectively, on the steering knuckle or on the trailing arm. The tightening torque for the brake shoe guide pins for the front wheels is 115 Nm and for the rear wheels is 55 Nm.
Attention! High tightening torque. Make sure the vehicle is firmly on stands. Mount the torque wrench horizontally. The final tightening of the bolts can also be done after the vehicle is on wheels.
9. Right wheel brake caliper. Fasten the brake pad wear sensor to the brake pad guide with a new self-locking bolt and connect the plug.
10. Install the brake pads, see relevant chapter.
Attention! The surfaces of the brake disc and brake linings must be free of grease or oil.
11. Connect the brake hose to the caliper, see relevant chapter.
Attention! The hose must not be twisted.
12. Remove air from the brake system, see relevant chapter.
13. Establish wheels according to the marks put at removal. Before doing this, lubricate the centering seat of the wheel disc on the hub with a thin layer of grease. Do not grease wheel bolts. Replace rusted bolts with new ones.
Attention! Make sure that the brake hose of the front wheel cylinder will not be chafed at the maximum turn of the steering wheel.
14. Screw in bolts of fastening of wheels and lower the car.
15. Tighten the bolts in a cross pattern to 110 Nm.
Attention! Squeeze the brake pedal of the car standing on the wheels several times until it stops, until you feel a strong resistance to pressing. When this action is performed, the brake pads are centered and they self-adjust to the working position.
16. Check the brake fluid level in the expansion tank. If necessary, top up to the maximum mark.
Attention! New brake pads should be run in.
Attention! Make sure that:
- A) brake hoses are securely connected;
- b) the brake hose is fixed in the holder;
- V) brake bleeder fittings. leg drive wrapped;
- G) there is enough brake fluid in the expansion tank.
17. Carry out a leak test of the brake system with the engine running.
To do this, depress the brake pedal with a force of 200-300 N (20-30 kg) for approximately 10 seconds. The pressure in the system and, accordingly, on the brake pedal, must not fall. Check all connections for tightness.