BMW 34111159257 Front Brake Pad

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Apply the handbrake, then raise and safely support the front or rear of the car as necessary before removing the road wheels. Drive out the pad retaining pins towards the centre of the car, remove the spreader spring, and pull out the pads using a suitable hooked tool. If the pads are being removed for other servicing operations, mark them for refitting in their original positions. When renewing brake pads, ensure the replacements are of the same type as the originals, indicated by colour coding. Check that the new pads are correct and free from grease, oil, and dirt, and clean any dirt and rust from the caliper before fitting. To fit the new pads, push the caliper pistons down into their bores to accommodate the extra thickness, noting that this will raise the brake fluid level in the master cylinder reservoir, which may require siphoning off some fluid to prevent overflow. Brake fluid is poisonous and can damage paintwork. For rear brake units, check the positions of the cut-outs on the pistons using a special tool, ensuring the piston is correctly positioned to avoid brake judder, squealing, or excessive pad wear. Ensure the recesses for the pads in the caliper are clean, fit the new friction pads, and drive one retaining pin through the pads and caliper to its stop. Install the spreader spring beneath the first pin, then the second pin, ensuring correct location of the spring. Renew any retaining pin that is not a tight fit in the caliper, and check that the pads can move slightly. If any pad binds, remove it and lightly file the backing plate for a proper fit. After installing all four brake pads, operate the brake pedal hard several times to bring the pads close to the disc, as failure to do so may result in ineffective brakes. Top up the fluid in the master cylinder reservoir, refit the road wheels, lower the car, and conduct a careful road test to check the brakes. The efficiency and life of new brake pads will be greatly increased if they are allowed to bed-in gradually, so avoid heavy braking, except in emergencies, for approximately 600km (375 miles) under normal running conditions.