Replacing the front brake pads (Mazda 6 GG)

Contents: Visual inspection of pad thickness ⇓ Removal brake pads ⇓

When the cylinder body is open, do not press the brake pedal, otherwise the piston will jump out. Do not damage the piston dust boot and do not allow oil to get on the brake disc. Always replace the pads together with the gaskets. If the gaskets show signs of rust or peeling of the rubber coating, replace them with new ones. Unscrew the connecting bolt only when disassembling and replacing the caliper assembly. In these cases, hang the cylinder body on a wire so as not to stretch the brake hose. Run in the friction surfaces of the brakes in case of boring or replacing drums or discs, after replacing the brake pads or friction linings, and also if the pedal begins to "fall through" after a short run.

Fig. 6.38. Front brake pads: 1 – brake pads; 2 – tension springs; 3 – clamping plates

Visual inspection of pad thickness

Fig. 6.39. Visual inspection of brake pad thickness

Check the thickness of the pads. To do this, lift the car, remove the wheel and look through the inspection hole in the cylinder body (Fig. 6.39).

Minimum thickness of brake pads: 1 mm.
Wear limit: 2.0 mm.

Removal brake pads

Caution: When replacing brake pads, always replace the inner and outer linings and lining caps as a set.

Drain the brake fluid.

Remove the front wheel and temporarily secure the wheel rim with two nuts.

Loosen the bolt and disconnect the brake hose bracket.

Fig. 6.40. Loosening the caliper mounting bolts

Holding the guide pins, unscrew the caliper mounting bolts (Fig. 6.40).

Fig. 6.41. Removing the caliper housing

Unscrew the caliper housing mounting bolts and remove the caliper (Fig. 6.41).

Fig. 6.42. Removing the guide pin dust boots

Holding the caliper in a vice with soft jaws, use a screwdriver and hammer to remove the guide pin dust boots (Fig. 6.42).

Fig. 6.43. Removing the brake cylinder boot

Using a screwdriver, remove the brake cylinder boot spring ring and boot (Fig. 6.43).

Place a rag between the piston and the cylinder.

Fig. 6.44. Removing the piston from the cylinder

Using compressed air, remove the piston from the cylinder (Fig. 6.44).

Fig. 6.45. Removing the oil seal

Using a screwdriver, remove the seal (Fig. 6.45).

Fig. 6.46. Measuring the thickness of brake shoe linings

Measure the thickness of the brake shoe linings with a ruler (Fig. 6.46).

Standard thickness: 12 mm.
Minimum thickness: 1.0 mm.

If the minimum pad thickness is not as specified, replace the pads.

Press the piston completely into the cylinder using a special tool.

Install the brake disc pad.

(Article is based on website data: MazBook)