Nissan Pick-ups and Pathfinder 1970-1988

Power Steering Gear

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ADJUSTMENT



Turning Torque

See Figures 1, 2 and 3

  1. Mount the gear on a holding fixture in a vise.
  2.  
  3. Turn the stub shaft (the shaft that connects with the steering column) several turns in either direction.
  4.  
  5. Mount an inch lb. torque wrench on the stub shaft and turn it lock-to-lock, counting the total number of turns. Divide that number by 2 and position the torque wrench and shaft at the mid-point.
  6.  
  7. Measure the amount of force needed to turn the shaft past the midpoint in both directions. The force should be 3.5 inch lbs.
  8.  
  9. To correct the adjustment, loosen the locknut on the adjusting screw and turn the screw to give the correct torque. Tighten the locknut to 21-25 ft. lbs. (28-34 Nm) on all except 1986-88 models (D21D series) where it should be 25-29 ft. lbs. (34-39 Nm).
  10.  



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Fig. Fig. 1: Measuring power steering gear turning torque



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Fig. Fig. 2: Adjusting turning torque



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Fig. Fig. 3: View of the top of the steering gear or steering box, most models similar

REMOVAL & INSTALLATION



See Figure 4

  1. Matchmark and remove the pitman arm from the sector shaft, using a puller such as special tool 290200001.
  2.  
  3. Matchmark and disconnect the steering stub shaft from the gear at the coupling.
  4.  
  5. Disconnect the fluid lines from the gear and cap the lines and openings in the gear.
  6.  
  7. Unbolt and remove the gear assembly from the frame.
  8.  
  9. Installation is the reverse of the removal procedure. When installing, observe the following torques:

    Gear housing-to-frame: 62-71 ft. lbs. (84-96 Nm).
     
    Steering stub shaft-to-coupling: 29-36 ft. lbs. (39-49 Nm)-except 1986-88 models (D21D series); 17-22 ft. lbs. (24-29 Nm)-1986-88 models (D21D series).
     
    Pitman arm-to-sector shaft: 101-130 ft. lbs. (137-177 Nm).
     

  10.  



Click image to see an enlarged view

Fig. Fig. 4: Power steering gear assembly

 
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