Front exciter ring removal

1. Component views

Front exciter ring (2WD (Except high ride suspension specifications))

Part name

  1. Bolt
  2. Hub flange and unit bearing
  3. Brake disc
  4. Dust cover
  5. Knuckle
  6. Wheel pin

Front exciter ring (2WD (High ride suspension specifications))

Part name

  1. Brake disc
  2. Hub and exciter ring
  3. Dust cover
  4. Knuckle

Front exciter ring (4WD)

Part name

  1. Brake disc
  2. Hub cap
  3. Cotter pin
  4. Lock nut
  5. Washer
  6. Hub and unit bearing
  7. Dust cover
  8. Knuckle

2. Preliminary and post procedures

1. Preliminary procedures

1) Open the engine hood.

2) Disconnect the battery cable from the battery negative terminal.

Caution

  • After turning OFF the ignition switch (power mode for models with passive entry and start system), do not disconnect the battery cable within 3 minutes.
  • If the battery cable is disconnected within 3 minutes, the vehicle electronic control system may malfunction.
  • If the battery cable is disconnected, perform the setting of the front door power window switch with AUTO UP/AUTO DOWN function after connecting the battery negative terminal.

3. Disc wheel removal

1. Models with aluminum wheels

1) Move the vehicle to a flat surface.

2) Pull the parking brake lever.

3) Secure the vehicle using chock blocks.

4) Raise the vehicle.

Note

  • Jack up the vehicle but not to an extent that the tire leaves the ground.

5) Remove the wheel cap from the disc wheel.

Note

  • Insert a tool with flat tip such as a flathead screwdriver into the wheel cap groove to remove.

Legend

  1. Wheel cap groove

6) Loosen the wheel nuts.

Note

  • Loosen without allowing the disc wheel to rattle.

Caution

  • At this time, do not remove the wheel nuts.

7) Raise the vehicle.

Note

  • Jack up the vehicle until the tire is completely off the ground.
  • Support the frame using a chassis stand as necessary.

8) Remove the disc wheel from the vehicle.

2. Models with steel wheels

1) Move the vehicle to a flat surface.

2) Pull the parking brake lever.

3) Secure the vehicle using chock blocks.

4) Raise the vehicle.

Note

  • Jack up the vehicle but not to an extent that the tire leaves the ground.

5) Remove the wheel cap from the disc wheel.

6) Loosen the wheel nuts.

Note

  • Loosen without allowing the disc wheel to rattle.

Caution

  • At this time, do not remove the wheel nuts.

7) Raise the vehicle.

Note

  • Jack up the vehicle until the tire is completely off the ground.
  • Support the frame using a chassis stand as necessary.

8) Remove the disc wheel and wheel cap from the vehicle.

4. Wheel speed sensor removal

1. Precautions for wheel speed sensor removal

Caution

  • Be careful not to damage the wheel speed sensor during service works, since it may cause ABS failure.
  • Because ABS abnormalities or malfunctions may occur if the wheel speed sensor is improperly installed, follow the precautions detailed in the outlined procedure when installing, removing, or replacing the wheel speed sensor.
  • When it is difficult to remove the wheel speed sensor body due to rust, use rust penetrant etc., and then carefully remove the sensor body by shifting it little by little until it comes free.
  • Do not bump or step on the removed sensor.
  • Do not remove the sensor unit by hammering.
  • Do not insert a flat-head screwdriver or the like into the gap to remove it forcibly.
  • Do not pull the sensor harness.

2. Removal (ABS-specification 2WD (Except high ride suspension specifications))

1) Disconnect the harness connector from the wheel speed sensor.

Legend

  1. Connector position
  2. Wheel speed sensor
  3. Harness bracket tightening nut
  4. Harness bracket tightening bolt
  5. Wheel speed sensor tightening bolt

2) Remove the harness bracket from the upper link and knuckle.

3) Remove the wheel speed sensor from the knuckle.

3. Removal (ABS-specification 2WD (High ride suspension specifications), ABS-specification 4WD)

1) Disconnect the harness connector from the wheel speed sensor.

2) Unlock the harness clips indicated by the arrows in the following diagram.

3) Remove the harness bracket from the upper link and knuckle.

4) Remove the wheel speed sensor from the knuckle.

Legend

  1. Connector position
  2. Wheel speed sensor
  3. Harness bracket tightening nut
  4. Harness bracket tightening bolt
  5. Wheel speed sensor tightening bolt

5. Brake hose disconnect

1) Remove the following parts from the brake caliper, and disconnect the brake hose from the brake caliper.

  • Bolt
  • Gasket

Caution

  • Do not reuse the gasket.

2) Cover the opening of the brake hose mounting hole using a plug, tape, etc.

To prevent the intrusion of foreign material.

6. Brake caliper removal

1) Remove the lock bolt from the brake caliper.

2) Remove the brake caliper from the brake support.

3) Remove the disc brake pad and shim from the brake support.

4) Remove the brake support from the knuckle.

7. Front hub removal

1. 2WD (Except high ride suspension specifications)

1) Remove the bolt from the knuckle.

2) Remove the front hub and brake rotor from the knuckle.

3) Remove the knuckle cap from the knuckle.

2. 2WD (High ride suspension specifications)

1) Remove the bolt from the knuckle.

2) Remove the front hub and brake rotor from the knuckle.

3) Remove the knuckle cap from the knuckle.

3. 4WD

1) Remove the hub cap from the front hub.

2) Remove the following parts from the front hub.

  • Cotter pin
  • Lock nut
  • Washer

3) Remove the bolt from the knuckle.

4) Remove the front hub and brake rotor from the knuckle.

8. Front hub disassembly

1. 2WD (Except high ride suspension specifications)

1) Place alignment marks on the front hub and brake rotor.

2) Secure the brake rotor using a vise and protective pad.

3) Remove the front hub from the brake rotor.

Legend

  1. Wheel pin
  2. Brake rotor
  3. Front hub
  4. Vise

4) Remove the wheel pin from the front hub using a hammer.

2. 2WD (High ride suspension specifications)

1) Remove the screw bolt from the brake rotor.

Legend

  1. Screw bolt

2) Remove the front hub from the brake rotor.

3) Remove the wheel pin from the front hub using a hammer.

3. 4WD

1) Remove the screw bolt from the brake rotor.

Legend

  1. Screw bolt

2) Remove the front hub from the brake rotor.

3) Remove the wheel pin from the front hub using a hammer.

9. Exciter ring removal

Caution

  • If the exciter ring is defective, replace the unit bearing as an assembly.

As the exciter ring is integrated with the unit bearing, it cannot be replaced separately.

Copyright Mazda Motor Corporation. All rights reserved.