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This video will show you how I rebuilt the dual piston brake calipers on a 2015 Ford F150 with the 5.0L V8. The dual piston caliper design is used in other engine sizes for the F150's (2012 - 2017) with slight differences. The components that were replaced were the: 1. Pistons 2. Piston seals (O rings) 3. Piston Dust Boots. In addition, we purchased another kit to replace the caliper bracket slide pins and the slide pin dust boots.
Typical failures of brake calipers can occur due to corrosion build up on the piston's seal surface caused by brake fluid moisture accumulation or a split in the piston dust boot allowing entry of dirt and water. When the piston's seal surface become pitted or rusted, they may loose their sealing properties as well as lock up inside the caliper piston cup.
Caliper slide pins that do not move freely within the caliper bracket will cause uneven brake pad wear. You can either replace or clean them followed by a coat of new brake grease to allow the calipers to adjust its position relative to the brake pad wear.
To perform this repair, you should have a compressed air source to push out the caliper pistons (you can't pull them out) and something to block the pistons from "shooting out" in a uncontrolled manner. I used my dual caliper piston compression tool with a small block of wood.
To perform a complete repair, I also suggest you replace the flexible brake line that connects to the caliper. They can dry rot over time resulting in leaks and the line internals may collapse which may cause brake lock up.
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Tools and Parts:
Ford Pickups,Expedition,Lincoln Nav 2WD&4WD Gas F-150 (97-03),F-150 Heritage (04),F-250 (97-99),Expedition (97-17),Navigator (98-17) Haynes Repair Manual (No diesel,F-250HD,F-350,supercharged)
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Lock Technology Dual Piston Brake Press
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Camshaft & Crankshaft Seal Tool Kit (Suits seals from 21.5mm-64mm)
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CRC 05089 BRAKLEEN Brake Parts Cleaner - Non-Flammable -19 Wt Oz
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Astro Pneumatic Tool 1717A Deluxe 4" Air Blow Gun with 1/2" Removable Tip, Green
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Permatex 24110 Ultra Disc Brake Caliper Lube, 8 oz.
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Permatex 22058 Dielectric Tune-Up Grease, 3 oz. Tube
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