Subaru ff-1/1300/1400/1600/1800/Brat 1970-1984 Repair Guide

Power Steering Gear

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The power steering gearbox is a rack and pinion type integral system. The power cylinder is built in the gearbox, using the rack shaft as a piston. The control valve is arranged around the pinion shaft.



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Fig. Fig. 1 Exploded view of a common steering gear

REMOVAL & INSTALLATION



  1. Disconnect the negative (-) battery cable.
  2.  
  3. Remove the spare tire.
  4.  
  5. If necessary, disconnect the thermo sensor connector.
  6.  
  7. Raise and support the front of the vehicle with jackstands.
  8.  
  9. Remove the front wheels.
  10.  
  11. Disengage the electrical connector from the O 2 sensor, then remove the front exhaust pipe assembly.
  12.  


WARNING
If equipped with an air stove, remove it.

  1. Remove the tie rod end cotter pin and loosen the castle nut.
  2.  
  3. Using a Ball Joint Puller tool, separate the tie rod ends from the steering knuckle arm.
  4.  
  5. Remove the jack-up plate and the clamp.
  6.  
  7. From the power steering gear, remove the center pressure pipe, connect a vinyl hose to the pipe and joint, then turn the steering wheel to discharge the fluid into a container.
  8.  


WARNING
When discharging the power steering fluid, turn the steering wheel fully, left and right. Be sure to disconnect the other pipe and drain the fluid in the same manner.

  1. Make alignment marks on the steering shaft universal joint assembly-to-power steering unit and the steering shaft-to-universal joint assembly.
  2.  
  3. Remove the lower/upper universal joint-to-shaft bolts. Lift the universal joint assembly upward and secure it out of the way.
  4.  
  5. From the control valve of the gearbox assembly, remove the power steering pressure pipes.
  6.  
  7. Remove the power steering pressure pipes from the control valve of the gearbox assembly.
  8.  
  9. Remove the power steering gearbox-to-crossmember assembly bolts and the gearbox assembly from the vehicle.
  10.  


WARNING
When installing the universal joint assembly, be sure to align the matchmarks.

To install:

  1. Installation is the reverse of removal.
  2.  
  3. Torque the power steering gearbox-to-crossmember bolts to 33-40 ft. lbs. (44-54 Nm) and the power steering pressure pipes to 7-12 ft. lbs. (9-16 Nm).
  4.  
  5. Torque the universal joint assembly-to-power steering gearbox bolts to 16-19 ft. lbs. (21-25 Nm) and the universal joint assembly-to-steering shaft bolts to 16-19 ft. lbs. (21-25 Nm).
  6.  
  7. Torque the tie rod end-to-steering knuckle nut to 18-22 ft. lbs. (24-29 Nm), (after torquing, turn it 60° further) and the wheel lug nuts to 58-72 ft. lbs. (78-97 Nm).
  8.  
  9. Refill and bleed the power steering system. Check and/or adjust the toe-in and the steering angle.
  10.  

ADJUSTMENT



Tighten the backlash adjuster until it bottoms, back off the screw 30° and torque the locknut to 22-36 ft. lbs. (29-48 Nm). There should be 0.004 in. (0.124mm) clearance between the screw tip and the sleeve plate.

 
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