Ford F-150 Master Cylinders and Parts

Before you venture into the wild outdoors with your Ford F-150 pickup, take a moment to ensure that its in top shape to handle the pressure. There’s a bevy of parts on offer to keep your Ford truck on top of its game, including accessories, parts for the engine, grille replacements, headlights, and more. Keep your Ford vehicle on the go wherever you are whether its the back roads or heavy-duty towing through urban areas.

What does a master cylinder do in the Ford F-150?

In a Ford F-150 pickup with an automatic transmission, this part is located behind the brake pedal and serves to transfer the pressure of your foot into hydraulic force, which actuates the secondary or slave cylinders in the calipers. These calipers, which are affixed behind the wheels, provide the vices that hold the braking pads to the frictional disc or drum array for each wheel. This process engages those pads to slow the truck.

In variants of the F-150 that use a manual transmission, a second master cylinder is used in conjunction with the clutch. In this case, depressing the clutch pedal trips the master cylinder, which traces to a secondary cylinder that disengages the throw-out bearing from the flywheel so that the operator can shift gears.

What are the signs of a failing Ford F-150 master cylinder?

A master cylinder in any vehicle can begin to fail with continuous use over the years as the seals lose their consistency and allow fluid to leak out. Because this part of your Ford F-150 pickup is used primarily for the braking assembly, the symptoms of a dying master cylinder will manifest in the following ways:

  • Braking pedal feels soft or mushy
  • Braking pedal sinks slowly when depressed
  • Braking feels loose
  • Braking fluid is contaminated or low

For an F-150 truck that uses a manual transmission, the master cylinder behind the clutch pedal can also fail, resulting in a similar set of problems:

  • Difficulty shifting
  • Contaminated clutch fluid
  • Clutch pedal feels soft or mushy
  • Clutch pedal catches or flexes inconsistently

How do you replace a Ford F-150 truck master cylinder?

Replacing the master cylinder in your Ford F-150 is a lengthy process that isnt necessarily difficult but involves several steps.

  • Reference the Ford owners manual to locate the master cylinder, fluid lines, and fluid sensors.
  • Drain the brake fluid from your F-150 using a pan or baster, and dispose of the fluid in accordance with local ordinances.
  • Disconnect the fluid sensors and lines; take care that excess fluid doesnt spill.
  • Disengage the master cylinder by loosening the bolts with a wrench, and then, install the new cylinder.
  • The fluid must be replaced with the appropriate type, and it must be "bled" using a bleeder kit.