Early bronco power brake install

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Battery Parts Performance Ignition. Engine Parts. Fuel Parts. Dash Parts Mirrors. Seat Belts Seat Covers Storage. Light Parts. Steering Yokes Other Steering Parts. Save the clip and any bushings. Now unbolt the master cylinder from the firewall. The new booster bracket uses one of the master cylinder bolt holes as well as 3 others. See the arrows on the photo above.

Now is a good time to clean and repaint your firewall if it needs it. Place the booster against the firewall and secure with the 4 bolts. Now adjust the length of the pedal-to-booster connecting rod so that your brake pedal is at the same height it was previously. Tighten the lock nut to secure the rod fork. Then reconnect the rod fork to the booster bracket arm with the supplied pivot pin. Be sure to secure with a cotter pin. Before bolting the master cylinder to the booster you need to adjust the length of the push rod sticking out of the booster.

To get this play start by threading the tip of the push rod out until the master cylinder no longer pushes up snub against the booster.

Then thread the tip in just enough so the master cylinder just slides up to the booster without pushing on the rod. This will be your point of no play. Bolt the master cylinder to the booster. You should always bleed the master cylinder to get rid of any air. Air in the master cylinder will go straight into the brake lines and make it that much harder to bleed the system afterwards. Pick up a simple kit from your local parts store, which will include various size fittings and 2 rubber lines.

Thread the fittings into the master cylinder, attach the tubes and loop them back into each reservoir. Just cut them and bend them back into the reservoirs. If you are bench bleeding use a large screw driver to push on the master cylinder Keep an eye on the brake fluid level and add fluid as needed to be sure the tubes stay submerged.

When you stop seeing bubbles the bleeding is done. Brake fluid is almost as bad as paint remover. You may want to lay a rag under your master cylinder while bleeding to avoid spilling any fluid onto painted surfaces.

The H-block shown is the most common configuration on drum brake Broncos and is always confused with a proportioning valve.

We highly recommend getting new brake lines. The brake lines we carry fit perfectly and made the install simple. If you need to adjust them be very careful not to crimp or make any sharp bends.