1998 Ford Explorer Change Master Cylinder

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The 1998 Ford Explorer uses a master cylinder as an integral part of the braking system. The master cylinder converts the pressure on the brake pedal into hydraulic pressure on the brake calipers. This process enables the driver to apply the brakes with minimum force. The master cylinder has seals and other inner parts that may wear out as they age, causing a loss of brake stopping power. Replacing the master cylinder does not require special tools.

[edit] Tools Used

Tools
Adjustable wrench
Brake fluid
Rags
Duct tape

[edit] Change Master Cylinder

  • Open the hood to access the engine compartment. Locate the master cylinder which can be found near the firewall on the driver side for the 1998 Ford Explorer. Place rags under the master cylinder to catch any brake fluid that leaks during the procedure.
  • Unscrew the brake line tube nuts using an adjustable wrench. Pull the brake lines out from the master cylinder and cap the ends with duct tape to prevent dust contamination.
  • Disconnect the cruise control switch located at the front of the master cylinder. Disconnect the low brake fluid warning light sensor from the inner side of the master cylinder, if one is equipped.
  • Remove the retaining nuts from the master cylinder with an adjustable wrench. Remove the old master cylinder from the vehicle. Unscrew the reservoir cap from the top of the master cylinder and discard any remaining brake fluid.
  • Install the new master cylinder using the two retaining nuts. Tighten retaining nuts with an adjustable wrench.
  • Connect the cruise control switch and low brake fluid sensor if equipped.
  • Remove the tape from the brake lines and insert the lines into the master cylinder. Tighten the brake lines using an adjustable wrench.
  • Fill the master cylinder reservoir with brake fluid until it reaches the fill line. Install the reservoir cap and tighten. Remove the rags used to catch brake fluid and close the hood.

[edit] Tips & Warnings

  • Brake fluid is damaging to vehicle paint and human skin.
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