The 1999 Mazda B2500 is a two-wheel-drive imported version of a Ford Ranger. It uses a 2.5-liter four-cylinder engine and front disc brakes. The front discs (also known as rotors) are mounted to the spindle with inner and outer bearings that require a bench press or bearing puller to remove. If the pads are replaced in time and there are no visual or physical defects in the rotors (such as surface cracks, scored grooves, rust pits or warping--which will cause a pulsation when braking), the rotors do not always have to be machined or replaced.
Instructions
- 1
Park on a flat surface. Apply the parking brake. Crack the lug nuts loose on both front wheels with the tire lug wrench. Loosen the lug nuts one-quarter turn counterclockwise.
2Lift the front end of the truck with a jack (one side at a time) and then place the jack stands under the lower control arm or the front frame rail. Remove the lug nuts and tires.
3Place the C-clamp over the caliper and pad assembly so the top of the clamp is on the inside housing of the caliper and the clamp-drive is on the top or bottom portion of the backing plate of the outboard pad. Tighten the clamp slowly to push the dual caliper pistons fully into the caliper bores.
4Remove the upper and lower caliper slide bolts (located on the inside housing of the caliper) using a metric box-end wrench. Remove the caliper and then support it on the frame member so it is not hanging from the hydraulic brake hose.
5Remove the inboard and outboard pads from the caliper bridge. Clean off corrosion and brake dust from the upper and lower pad clips mounted on the caliper anchor using the stiff-bristled wire brush.
6Apply an even coat of lubricant to the clips where the tabs of the brake pads sit inside.
7Install the new outboard and inboard brake pads into the caliper bridge. Replace the caliper over the brake pads and the rotor onto the caliper bridge. Align the caliper slide pin holes of the caliper to the knuckle assembly.
8Tighten the caliper slide pins to 25 ft.-lbs. using a torque wrench and socket.
9Repeat for the other front wheel. Replace the wheels and lug nuts. Tighten the lug nuts snugly to the spindle and hub assembly.
10Raise the truck with the jack just enough to remove each jack stand (one at a time) and then lower the front end of the vehicle slowly to the ground.
11Tighten the lug nuts in a crisscross pattern to 100 ft.-lbs. Pump the brake pedal until it feels firm. This will extend the caliper pistons and seat the pads to the rotors. Test drive the truck for proper braking response.
