Honda Accord/Prelude 1984-1995 Repair Guide

4-Wheel Steering (4WS) System

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PRECAUTIONS





Once removed, handle the rear steering gearbox with extreme care.
 
Do not twist or apply any torque to the offset (input) shaft.
 
Do not strike or apply force to the stroke rod.
 
Do not attempt to disassemble or repair the gearbox. Do not loosen any of the external locknuts.
 

REMOVAL & INSTALLATION



Use of the rear steering center locking pin tool is required for these procedures. This is a special purpose tool, unlikely to be found in the aftermarket. It must be installed any time the rear steering gearbox or the center shaft is removed. It must also be used during rear wheel alignment.

Preludes Through 1991

See Figures 1, 2, 3 and 4

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the rear of the car. Double check the jackstands for correct placement and stability.
  4.  
  5. Remove the rear wheels.
  6.  
  7. Remove the cotter pins from the tie-rod joints. Loosen the castle nuts. Separate the joint from the steering knuckle with a ball joint separator, then disconnect the tie-rod.
  8.  
  9. At the center shaft connection to the rear steering gearbox, slide the joint guard toward the front of the car. Remove the steering yoke bolt.
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Remove the steering yoke bolt

  1. Remove the cap bolt from the gearbox. With the steering wheel centered, install the center locking pin. If the steering is centered (and locked), no red will be visible around the shaft of the lock pin. If it is not correctly engaged, the red mark will be seen.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: With the steering wheel centered, install the center lock pin

  1. Remove the 4 gearbox retaining bolts. Note that the lower bolts are longer than the other two; they must be reinstalled correctly.
  2.  
  3. Remove the rear steering gearbox to the rear of the car, lifting it over the rear beam.
  4.  



Click image to see an enlarged view

Fig. Fig. 3: Remove the bolts, then remove the rear gearbox assembly from the vehicle. Note that the lower bolts are longer than the other two

To install:
  1. Place the gearbox in position.
  2.  
  3. Install the retaining bolts, making sure each is in its proper place. Tighten the bolts to 29 ft. lbs. (40 Nm).
  4.  



Click image to see an enlarged view

Fig. Fig. 4: 4WS components on Preludes through 1991

  1. Connect the gearbox shaft to the center shaft. Tighten the yoke bolt to 16 ft. lbs. (22 Nm) and install the joint guard.
  2.  
  3. Remove the center locking pin. Reinstall the cap bolt and washer.
  4.  
  5. Connect the tie-rods to the knuckles. Tighten the castle nuts to 32 ft. lbs. (44 Nm) and install new cotter pins.
  6.  
  7. Install the rear wheels. Lower the car to the ground.
  8.  

1992-95 Prelude

See Figures 5 and 6

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the rear of the car. Double check the jackstands for correct placement and stability.
  4.  
  5. Remove the rear wheels.
  6.  
  7. Remove the cotter pins from the tie-rod joints. Loosen the castle nuts. Separate the joint from the steering knuckle with a ball joint separator, then disconnect the tie-rod.
  8.  
  9. With the steering wheel centered, install the center locking pin tool.
  10.  
  11. Remove the rear steering actuator cover.
  12.  
  13. Disengage the ground cable connectors and terminals from the actuator.
  14.  



Click image to see an enlarged view

Fig. Fig. 5: Disengage the ground cable connectors and terminals from the actuator

  1. Remove the four mounting bolts and brackets, then lower the assembly from the vehicle.
  2.  



Click image to see an enlarged view

Fig. Fig. 6: Remove the four mounting bolts and brackets, then lower the assembly from the vehicle

To install:
  1. Position the assembly on the vehicle and install the mounting bolts and brackets. Tighten the bracket bolts to 28 ft. lbs. (39 Nm) and the mounting bolts to 32 ft. lbs. (44 Nm).
  2.  
  3. Reconnect the tie rods and tighten the castle nut to 43 ft. lbs. (36 Nm).
  4.  
  5. Engage the electrical connections.
  6.  
  7. Install the terminal cover and actuator cover.
  8.  
  9. Remove the center locking pin tool.
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Start the engine and turn the wheel lock-to-lock. This must be done to reset the rear steering actuator.
  14.  

 
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