- Jack and jack stands
- Lug wrench
- Hammer
- Torque wrench
- Flathead screwdriver
- Replacement bearing
- New cotter pin
- Grease
- Shop rags
- Safety glasses
- Gloves
1. Prepare the Vehicle:
- Park on level ground and set the parking brake.
- Loosen the lug nuts slightly but don't remove them completely.
2. Raise the Vehicle:
- Safely raise the rear of the vehicle using a jack and place jack stands under the frame for support.
- Remove the lug nuts and take off the wheel.
3. Remove the Brake Drum:
- This may require some tapping with the hammer. Avoid direct hammer contact to prevent damaging the drum surface.
4. Remove the Hub Assembly:
- Use the flathead screwdriver to pry up the dust cover. Remove the cotter pin and the castle nut.
- Use a hammer and punch to knock the hub assembly out.
5. Remove the Old Bearing:
- Clean the hub assembly and remove any old grease.
- Use a slide hammer or bearing puller to remove the old bearing.
6. Install the New Bearing:
- Clean and grease the new bearing thoroughly.
- Gently tap the new bearing into place using a hammer and socket extension or bearing race installer.
7. Reassemble the Hub Assembly:
- Place the castle nut back onto the spindle and install a new cotter pin.
- Replace the dust cover.
8. Reinstall the Brake Drum:
- Double-check that the hub assembly is securely in place.
- Reattach the brake drum. If it's stuck, gently tap it back into place using the hammer.
9. Reinstall the Wheel:
- Place the wheel back on the hub. Tighten the lug nuts hand-tight.
10. Lower the Vehicle:
- Lower the vehicle carefully until the tires touch the ground.
11. Tighten the Lug Nuts:
- Tighten the lug nuts in a star pattern using a torque wrench to the specified torque as per vehicle manufacturer's recommendations.
12. Test Drive:
- Take the vehicle for a short test drive to ensure that the wheel bearings are working smoothly and there are no abnormal sounds.
Remember, this is a general overview of the process. It's important to refer to the specific service manual for your 1987 Isuzu Trooper for detailed instructions and safety precautions.
