How to Bleed Brakes on a 93 Ford Bronco

The full-size Bronco debuted in the 1978 model year after 11 years of the Bronco being a compact SUV. The 1993 Bronco came standard with a 185-horsepower, 5.0-liter V-8 engine, and had an optional 200-horsepower, 5.8-liter V-8 engine available. The 1993 Bronco came standard with front disc brakes and rear drums, but had optional rear disc brakes; also standard on the Bronco was a rear-wheel antilock brake system. Bleeding the brake system on the 1993 Bronco includes removing air from the master cylinder and all four wheels.

Instructions

1

Find the brake master cylinder on the drivers side of the firewall. Fill the master cylinder to its Max line with fresh DOT 3 brake fluid.

2

Position a small drain pan under the master cylinder and loosen the brake line fittings to the master cylinder one full turn, using a line wrench. Instruct an assistant to press the brake pedal to the floor, and listen for the telltale gurgling sound of air escaping from the fittings. Tighten the brake line fittings, then tell your assistant to release the brake pedal. Repeat this step until no gurgling sound comes from the master cylinder.

3

Refill the master cylinder to its Max line with fresh DOT 3 brake fluid.

4

Kick wheel chocks under the front of the front tires, then raise the rear of the Bronco with a floor jack. Slide jack stands under the SUVs frame rails, then lower the Bronco onto the jack stands.

5

Position yourself behind the passengers side rear wheel and find the bleeder valve on the top of the drum brake backing plate or caliper body on drum or disc brakes, respectively.

6

Press a 1/4-inch inside diameter, clear vinyl hose onto the bleeder valve, and place the other end of the hose in a clean, clear container. Pour DOT 3 brake fluid into the clean, clear container until it submerges the end of the hose.

7

Instruct your assistant to press and release the brake pedal five or six times, then hold down the pedal. Open the bleeder valve by turning the bleeder valve one full turn counterclockwise with a combination wrench. Watch the submerged end of the hose and look for air bubbles to come from the hose. Tighten the bleeder valve. Repeat this step until no air bubbles come from the end of the hose. Pull the hose from the bleeder valve once the air bubbles no longer appear, then refill the master cylinder to the Max line.

8

Slide across the truck so you are behind the rear, drivers side wheel. Repeat steps 6 and 7 to bleed this wheel.

9

Raise the rear of the SUV off the jack stands and remove the stands. Lower the vehicle to the ground. Remove the wheel chocks from under the front wheels.

10

Wedge wheel chocks under the rear wheels, then lift the front of the Bronco with a floor jack. Position jack stands under the vehicles frame rails, then lower the Bronco onto the jack stands.

11

Position yourself behind the front passengers side tire and find the bleeder valve on the top, rear of the calipers body. Repeat steps 6 and 7 to bleed the passengers side front wheel.

12

Move to the drivers side of the SUV and repeat steps 6 and 7 to bleed the drivers side front wheel.

13

Lift the Bronco off the jack stands and remove the jack stands. Lower the vehicle to the ground. Test drive the vehicle to verify the brakes operate correctly.