Brake Pads, Front

Brake pads, front

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Remove the wheels on both sides.

Removing the brake pads





Note! Minimum thickness for replacing brake pads = 2 mm.

Remove:
- the spring
- the protective caps
- the locating pins, use a 7 mm hex socket
- the brake caliper. Hang up the caliper in a suitable position to avoid damaging the brake hose
- the brake pads.

Note! Do not depress the brake pedal while the brake pads are removed.

Cleaning the brake caliper
Clean and check the brake caliper and dust cover.
Clean and check the brake pad mating surfaces in the brake caliper and caliper holder.
Clean the sliding pins using a steel brush.

Note! If the dust boot is damaged dirt may have penetrated the cylinder. If this is the case the caliper must be replaced.

Brake disc check
Check brake disc friction surfaces.
If the brake disc displays signs of out-of-true, check its lateral run out. See: Brake disc front, checking Brake Disc Front, Checking.
Replace the brake disc if it displays signs of heavy wear, variable thickness or similar. To replace, see: Front brake disc, B5254T7, AW55-50/51SN, B5254T7, M66 Brake Disc Front, Replacing.

Note! Minimum disc thickness/replacement limit = 23.0mm. Minimum recommended disc thickness when installing new brake pads = 23.8mm.

Installing brake pads

Note! For tightening torques, see Specifications. Tightening Torque.

Lubricating the sliding surfaces




Lubricate the contact surfaces of the brake pads using silicone grease, part no. 1161687 (12 ml) or part no. 1161688 (50 ml).
(Do not lubricate the sliding pins)

Installing brake pads
Press piston back into cylinder on brake caliper.
Check that the dust cover is correctly positioned.

Install:
- new brake pads
- the brake caliper
- the locating pins. Tighten in accordance with: Tightening torque Tightening Torque.

Note! Check the rubber sleeves of the locating pins. Replace if necessary.

- the protective caps
- the spring.

Finishing

Depress the brake pedal a few times. Check the brake fluid level in the reservoir. Top up if necessary.
Install the wheel. See: Wheels Service and Repair.