Mazda Miata 1990-1997
The wheel bearings on these vehicles are not adjustable. To check if the bearing requires service, remove the wheel and tire assembly, brake caliper and disc brake rotor. Install a dial indicator with the indicator foot resting on the wheel hub. Try to move the hub in and out. If there is more than 0.002 in. (0.05mm) bearing play, check the wheel hub nut torque or replace the hub and bearing assembly.
Removal & Installation
Mazda Miata 1990-1997
- Loosen the axle nut, then raise and safely support the vehicle.
- Remove the wheel and tire assembly and the axle nut.
- Remove the brake caliper assembly and hang it from the body. Do not let it hang by the hose.
- Remove the disc and the ABS speed sensor. Remove the sensor bracket.
- Remove the lower and upper control arm bolts and remove the knuckle and hub assembly from the vehicle.
- Be careful not to distort the back plate. If damaged, a new one must be pressed onto the knuckle.
- To remove the hub, remove the seal and properly support the assembly to press the hub out from the back. If the inner bearing race stays on the hub, use a chisel to move it far enough to grab it with a bearing puller.
- Remove the snapring and press the bearing out of the knuckle.
- Carefully inspect all parts for wear or damage, replace as necessary. Always install a new seal and bearing.
- Apply grease to the wheel bearing. When pressing the new bearing into the knuckle, make sure to press only on the outer race.
- Apply grease to the hub. Install the snapring, support the inner race and press the hub into the bearing. Failure to properly support the bearing races for pressing will ruin the bearing.
- Lubricate and install a new seal, and fit the knuckle into place on the suspension. Torque the upper control arm bolt to 49 ft. lbs. (67 Nm) and the lower bolt to 55 ft. lbs. (75 Nm).
- Install the sensor bracket and the ABS speed sensor.
- Install the brake disc. Install the brake caliper, and torque the bolts to 51 ft. lbs. (69 Nm).
- Install the washer and a new axle nut. With all 4 wheels on the ground, torque the nut to 160-217 ft. lbs. (216-294 Nm). Stake the nut into place.
- Check and adjust the rear wheel alignment.