The left drivers side antilock braking system sensor and wire are combined as a unit on a 2002 Ford F-150. The F-150 has a reluctor ring for the ABS pressed onto the rear of the brake rotor. The ABS sensor is mounted in a hole in the knuckle assembly directly above the reluctor ring. Its harness attaches to the knuckle where is crosses over to the inner fender well. It passes through the fender well above the upper control arm, where it connects into the vehicle harness.
Instructions
- 1
Loosen the lug nuts on the left front wheel one complete turn using the lug wrench. Raise the truck and place a jack stand under the frame on the left side. Continue removing the lug nuts and wheel.
2Use a common screwdriver to pry the inside brake shoe away from the rotor just enough to make it easy to remove. Remove the two caliper mounting bolts using a socket. Lift the caliper off the rotor and suspend it from the coil spring using a suitable piece of wire.
3Remove the two caliper mounting bracket bolts using a socket. Remove the bracket. Remove the grease cup on the center of the hub using the grease cup remover tool. Pull the cotter pin out of the spindle axle using a wire cutter. Pull the lock washer off the spindle nut.
4Remove the spindle nut using the large adjustable wrench. Shake the rotor slightly, and the large washer and outside thrust bearing will fall out. Pull the rotor off the spindle. Remove the 10 mm bolt securing the ABS sensor to the knuckle using a socket. Lift the sensor out of the housing.
5Follow the sensor wire to the side of the upper control arm and over to the control arms opening in the fender well. Remove the wire stays along the way. Disconnect the ABS sensor wire at the vehicle harness on the engine side just above the upper control arm.
6Install the new sensor and wire in the same manner in which the old one was installed. Install the rotor on the spindle and insert the thrust bearing and washer. Install the large spindle nut and tighten by hand. Complete the tightening process with the large adjustable wrench.
7Turn the nut clockwise with the wrench until you feel considerable resistance. Spin the rotor by hand a couple times to help seat the bearings. Turn the spindle nut counterclockwise one full turn and once again spin the rotor. Set the bearing preload by turning the spindle nut clockwise again until you experience considerable resistance. Turn the nut counterclockwise one-half turn to allow for bearing expansion.
8Install the spindle nut lock washer and cotter pin. Install the grease cup by tapping it lightly with a hammer. Install the caliper-mounting bracket and tighten the two rear bolts to 80 foot-pounds of torque.
9Install the caliper and tighten the mounting bolts to 38 foot-pounds of torque. Install the wheel and tighten the lug nuts just enough to ensure they are in contact with the wheel. Lower the truck and tighten the lug nuts on the wheel to 120 foot-pounds of torque.
