Jeep Wrangler/YJ 1987-1995 Repair Guide

Rear Wheel Sensor

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REMOVAL & INSTALLATION



See Figures 1 and 2



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Fig. Fig. 1: Setting the air gap on the original rear sensor



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Fig. Fig. 2: New rear sensor with air gap spacer

  1. Raise and safely support the vehicle.
  2.  
  3. Disconnect the sensor wires at the rear axle connectors.
  4.  
  5. Remove the wheel and brake drum.
  6.  
  7. Carefully remove the clips holding the sensor wires to the brake lines or rear axle and rear brake hose.
  8.  
  9. Loosen or unseat the backing plate grommet holding the sensor wire.
  10.  
  11. Remove the bolt holding the sensor to the bracket. Remove the sensor by pulling the wire through the grommet hole in the backing plate.
  12.  

To install:
  1. Feed the sensor wire through the grommet hole in the backing plate and seat the grommet in the plate.
  2.  
  3. Apply Loctite® 242 or equivalent, to the sensor attaching bolt. Replace the original bolt if worn or damaged.
  4.  
  5. Install the attaching bolt finger tight at this time.
  6.  
  7. Set the sensor air gap as follows:
    1. If the original sensor is being installed, remove any remaining pieces of cardboard spacer from the sensor pickup face. After the sensor is loosely held in position by the retaining bolt, use a brass feeler gauge to set the air gap from the sensor to the tone ring. Correct air gap is 0.043 in. (1.1mm). Tighten the retaining bolt to 11 ft. lbs. (14 Nm) and recheck the air gap with the feeler gauge.
    2.  
    3. If a new sensor is being installed, push the cardboard spacer on the sensor face, against the tone ring. Tighten the retaining bolt to 6 ft. lbs. (8 Nm). Correct air gap will be established as the tone ring rotates and peels the spacer off the sensor face.
    4.  
    5. Verify sensor air gap adjustment. If adjustment has changed after tightening the bolt, readjust the air gap as needed.
    6.  

  8.  
  9. Connect the sensor wires to the connectors at the rear axle and feed through the access hole. Seat the sensor wire grommets in the floorpan.
  10.  
  11. Make sure the sensor wiring is secured to the brake lines and rear axle with clips. Make certain that the wiring is clear of all moving and/or hot components.
  12.  
  13. Install the brake drum and wheel. Lower the vehicle to the ground.
  14.  

 
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