Mazda MX-3 silhouetteMX-3

Front Axle — Wheel Hub, Steering Knuckle (Preinspection / Wheel Hub Bolt Replacement)

M-5prose procedure
Continued from M-4

WHEEL HUB, STEERING KNUCKLE

Preinspection

Wheel bearing play

  1. 1
    Remove the wheel and tire.
  2. 2
    Remove the brake caliper assembly and disc plate.
  3. 3
    Position a dial indicator against the wheel hub. Push and pull the wheel hub by hand in the axial direction and measure the wheel bearing play.
    Front wheel hub / steering knuckle assembly with a dial indicator positioned against the wheel hub to measure wheel bearing play. The hub, brake disc backing, tie-rod and lower arm are visible. An arrow indicates the axial push/pull direction.
  4. 4
    If the bearing play exceeds specification, check and adjust the locknut torque or replace the wheel bearing if necessary.
Maximum wheel bearing play
0.05mm {0.002 in}

On vehicle service

Replacement

Wheel hub bolt replacement

  1. 1
    Remove the wheel hub bolt by using the SSTs.
    Removing the wheel hub bolt using SSTs. The puller body (49 T028 303) and attachment (49 T028 304) are clamped to the wheel hub to press out the hub bolt.
  2. 2
    As shown in the figure, install the wheel hub bolt into the wheel hub and set a washer and wheel hub nut in the wheel hub bolt.
    Installing the wheel hub bolt. Inset detail (upper left) labels WASHER, WHEEL NUT and WHEEL HUB stacked on the hub bolt. Main view shows the wheel hub held by a brass bar while the wheel nut is tightened, with WHEEL NUT and BRASS BAR labeled.
  3. 3
    Tighten the wheel hub nut while holding the wheel hub by using the brass bar.
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