Withdrawal
Remove the wheel trim. Loosen the wheel bolts with the vehicle on the ground.
Mark the position of the rims on the front wheel hubs with paint. Thanks to this, the subsequently balanced wheel is set to the same position.
Raise the front of the car.
Remove wheel.
Attention: Changing the pad from the inside to the outside and vice versa, as well as the right chants wheel and vice versa, is not allowed. Repositioning may cause uneven braking. It is imperative to replace all front wheel brake pads at the same time, even if only one pad has reached its wear limit. When reinstalling the brake pads, they should be marked when removed.
Unplug connector for wear indicator -arrow- at left brake caliper, but do not pull on cable.
Pry out the plastic caps of the fixing bolts with a screwdriver.
Loosen both fixing bolts with a 7 mm spanner.
Pry off the bracket with a screwdriver.
Remove floating caliper.
Remove the outer brake pad.
The inner brake shoe is attached to the piston by a spring -6-. Pull out the brake pad.
Disconnect the wear indicator 7 from the left side of the inner brake pad.
If the insulation of the contact board is worn, the insulation of the wire is damaged, or the plastic part is worn, replace the wear sensor.
Installation
Attention: do not press the brake pedal when the brake pads are removed. because the piston will come out of the housing.
Clean the guide surfaces and the seating of the brake pads in the housing shaft with a suitable soft metal brush or a cloth soaked in alcohol. Do not use substances containing minerals or sharp instruments.
Before installation, check with your fingers that there are no scratches on the brake disc. Scratched discs should be replaced. Before installing new brake pads, clean brake discs with a gray or bluish coating.
Measure the brake disc thickness.
Check the integrity of the anti-dust cap of the piston 2 (Drawing W - 4467). Replace a damaged cap immediately, as penetrating dirt quickly leads to brake caliper leaks. This requires the removal and disassembly of the brake caliper (service station work).
Press brake piston 2 with a squeezing tool. This can also be done with a wooden rod (hammer handle), but at the same time be especially careful that there is no distortion of the piston and that the anti-smudge cap is not damaged.
Attention: When the pistons are depressed, the brake fluid is squeezed out of the brake cylinders into the expansion tank. Monitor the fluid level in the tank, you may need to suck the fluid.
To aspirate the fluid, you can use a vessel used to bleed air from the brake system or any plastic bottle that is intended only for brake fluid. Do not use drink bottles! Brake fluid is poisonous and must never be sucked out by mouth through a hose. Use an aspirator. After replacing the pads, the brake fluid level should also not exceed the MAX mark, as the fluid expands when the temperature rises. Leaking brake fluid gets on the brake master cylinder, destroys the paint and causes corrosion.
Attention: If the brake pads are heavily worn, check the ease of movement of the piston. In case of heavy movement of the piston, send the caliper for repair (service station work).
Apply a thin layer of lubricant to prevent disc brake squeaks (e.g. Plastitube, Tunap VC 582/S, Chevron SRJ/2, Liqui Moly LM-36 or LM-508-ASC) on the back of the brake pads. In this case, the lubricant is applied only to the back side. Under no circumstances should grease come into contact with the working surface of the brake pad or the brake disc. If necessary, wipe off the grease and clean the surface with alcohol.
Insert the brake shoe with spring 6 into the piston.
Attach wear indicator 7 to inner brake shoe. Make sure the locking clip 8 is in the correct position.
Insert the outer brake shoe 9 into the brake caliper and push the brake caliper onto the brake disc.
Inspect the 2 brake caliper mounting bolts, clean the bolt threads if necessary. The thread in the brake bracket can be cleaned by passing through it with a tap. Bolts with damaged or rusted threads must be replaced. Tighten the bolts with a 7 mm spanner with a tightening torque of 30 Nm
Attention: Do not overtighten the bolts.
Put protective caps on the bolts.
Connect the wear sensor connector on the left side of the vehicle to the connector on the brake caliper. The wire must pass through the loop on the bleeder valve cover, see illustration.
Insert the caliper into the brake caliper.
Apply the wheel in compliance with the marked position of the disc on the hub. Lower vehicle and cross-tighten wheel bolts to 110 Nm.
Install the wheel hub cap.
Caution: With the vehicle stationary, depress the brake pedal several times until a hard resistance appears.
Check the brake fluid level in the expansion tank, top up if necessary up to the MAX mark.
Carefully let the new brake pads run in, for which, by lightly pressing the brake pedal, brake the car several times from a speed of 80 km / h to 40 km / h. Allow the brakes to cool down between successive brakings.
Attention: For the first 200 km, avoid sudden braking until the vehicle comes to a complete stop.