Mazda MX-3 silhouetteMX-3

Engine Speed Sensing Power Steering — Steering Rack / Oil Seal / Rack Bushing / Hermetic Inspection

N-38prose procedure

Engine speed sensing power steering rack assembly and hermetic (vacuum hold) inspection.

Continued from N-37

6. Steering rack

  1. 1
    (1) Apply grease (lithium base, NLGI No.2) to the friction surface and teeth of the steering rack.
    Line drawing of sliding the SST over the steering rack from the tube side. Tool label '49 G032 305' is shown.
  2. 2
    (2) Slide the SST over the steering rack and slide it in from the tube side.
  3. 3
    (3) Remove the SST.

7. Oil seal (Rack)

  1. 1
    (1) Apply ATF to a new oil seal and slide it on the steering rack.
    Line drawing of a hand applying ATF to a new oil seal and sliding it onto the steering rack in the housing.
  2. 2
    (2) Set the SST on the rack.
    Line drawing of setting the SST on the rack and turning it to push the oil seal into the tube. Tool label '49 E032 301' is shown.
  3. 3
    (3) Turn the SST as far as it will go to push the oil seal into the tube.
  4. 4
    (4) Remove the SST.

8. Rack bushing

  1. 1
    Install the rack bushing assembly in the rack housing.
    The oil seal is pushed to the correct position in the rack housing by tightening the rack bushing.
    Line drawing of installing the rack bushing assembly into the rack housing.
Tightening torque (rack bushing)
873 - 961N·m

9. Hermetic inspection

  1. 1
    (1) Connect the SSTs to the cylinder housing.
    Line drawing of hermetic inspection setup: SSTs connected to the cylinder housing with a vacuum pump and gauge attached. Tool labels '49 G032 317' and '49 B032 319' are shown.
  2. 2
    (2) Connect a vacuum pump to the SST.
  3. 3
    (3) Apply 53.3 kPa {400 mmHg, 15.7 inHg} vacuum.
  4. 4
    (4) Verify that vacuum is held for at least 30 sec. If not, check the seal and assembly.
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