Measuring the thickness of the brake pads of the front disc brakes (Fiesta 4)

The brake pads on the front disc brakes wear out faster than the brake pads on the rear brakes. Check the thickness of the brake pads every 15,000 km or once a year. On all Fiesta models, the minimum permitted thickness of a brake pad, including the metal base of the pad, is 6 mm. Always replace all pads on one axle of the car, even if only one pad is worn. If the brake pads are to be re-installed, they must be marked before removal.



SEQUENCE OF WORKS

1. Check the thickness of the brake shoe linings after removing the wheels.

2. Using a ruler placed on the brake pad, measure its thickness.



PRACTICAL ADVICE

Checking the brake pedal travel

The free travel of the brake pedal should be no more than 1/3 of the full pedal travel. If the pedal moves further (check with your hand), immediately check the disc brakes - their pads may have worn down to the minimum thickness. Excessive brake pedal travel may be caused by jammed brake pads or a rusted brake caliper.

Checking the pedal travel should not replace checking the thickness of the brake pads, since the caliper piston moves the pads during braking to such a distance that when the brake pedal is released, the pads are always at the same distance from the brake disc. Therefore, until the brake pads are completely worn out, the braking pedal travel remains almost the same. If the pedal travel has decreased, air may have entered the system, which must be removed. Find the cause of its penetration into the hydraulic system.

(The original article is posted at: www.FordBook.ru)