#### REMOVAL AND INSTALLATION

##### Sentra and 200SX

NOTE: Whenever the hub or bearing assembly is removed, the wheel bearing assembly must be replaced. Never reuse the old bearing assembly.

1. Raise the vehicle and support it safely. Remove the front wheel.
2. Remove the wheel bearing/axleshaft locknut while depressing the brake pedal.
3. Remove the brake caliper and support it with a piece of wire. It is not necessary to disconnect the brake line from the caliper.
4. Remove the ABS sensor from the steering knuckle.

   NOTE: Do not depress the brake pedal or twist the brake line.

5. Remove the tie rod end using a tie rod removing tool J25730A or equivalent.
6. Separate the halfshaft from the knuckle by slightly tapping with a soft hammer. Position the axle shaft nut on the threads of the shaft to protect them when lightly tapping.
7. Loosen the lower ball joint nut and separate using a ball joint separator J25730A or equivalent.
8. Remove the two strut-to-knuckle retaining bolts and separate.
9. Remove the steering knuckle from the vehicle.
10. Place the assembly in a vise. Drive the hub with the inner race from the knuckle with a suitable tool. Remove the inner and outer grease seals.
11. Remove the bearing inner race and outer grease seal from the hub.
12. Remove the snapring and press the bearing outer race to remove the bearing from the steering knuckle.

    To install:

13. Press a new wheel bearing into the knuckle assembly not exceeding 3.3 tons (3,000 kg) pressure.
14. Install the snapring and pack the grease seal lips with chassis grease.
15. Install the inner and outer grease seals.
16. Press the wheel hub into the knuckle not exceeding 3.3 tons (3,000 kg) pressure.
17. Check bearing operation and by applying 3.9–5.5 tons of pressure to the hub assembly. Spin the hub several times in both directions.
18. Make sure the bearings rotate freely. If the bearings do not rotate freely, replace the bearings.
19. Install the knuckle and wheel hub assembly.
20. Install the lower ball joint and torque the nut to 43–54 ft. lbs. (59–74 Nm). Install a new cotter pin.
21. Install the strut bolts and torque them to 84–98 ft. lbs. (114–133 Nm) for 1991–94 vehicles or 68–82 ft. lbs. (92–118 Nm) for 1995–96 vehicles.
22. Connect the tie end and tighten the nut to 22–29 ft. lbs. (29–39 Nm). Install a new cotter pin
23. Install the disc brake caliper.
24. Install and torque the wheel bearing locknut to 145–203 ft. lbs. (196–275 Nm). Install a new cotter pin.
25. Install the front wheels and lower the vehicle.
26. Check the vehicle's alignment.
27. Road test the vehicle and verify proper operation.

##### Maxima and Altima

NOTE: Whenever the hub or bearing assembly is removed, the wheel bearing assembly must be replaced. Never reuse the old bearing assembly.

1. Remove the knuckle assembly from the vehicle.
2. Using a shop press and a suitable tool, press the hub with the inner race from the steering knuckle.
3. Using a shop press and a suitable tool, press the bearing inner race from the hub and remove the outer grease seal.
4. Using a prybar, pry the inner grease seal from the steering knuckle.
5. Using snapring pliers to remove the inner and outer snaprings from the steering knuckle.
6. Using a shop press and a suitable tool, press the sealed bearing assembly from the steering knuckle.
7. Inspect the hub, steering knuckle and snaprings for cracks and/or wear; if necessary, replace the damaged part(s).

   To install:

8. Install the inner snapring in the steering knuckle groove.
9. Using a shop press and a suitable tool, press the new wheel bearing assembly into the steering knuckle, until it seats, using a maximum pressure of 3 tons.

   Fig. 1:Typical method of installing the wheel bearing

10. Install the outer snapring.
11. Pack the new grease seal lips with multi-purpose grease.
12. Using a shop press and a suitable tool, press the new outer grease seal into the steering knuckle.
13. Using a shop press and a suitable tool, press the new inner grease seal into the steering knuckle.
14. Using a shop press and a suitable tool, press the hub into the steering knuckle, until it seats, using a maximum pressure of 5.5 tons; be careful not to damage the grease seal.

    Fig. 2:Typical hub installation

15. To check the bearing operation, perform the following procedures:
    1. Increase the press pressure to 3.5–5.0 tons.
    2. Spin the steering knuckle, several turns, in both directions.
    3. Make sure the wheel bearings operate smoothly.
16. If the wheel bearings do not operate smoothly, replace the wheel bearing assembly.
17. Install the knuckle assembly.
18. Install the halfshaft into the hub and tighten the locknut to 174–231 ft. lbs. (235–314 Nm).
19. Install the wheel assembly and lower the vehicle.
20. Road test the vehicle and verify proper operation.

##### 240SX and 300ZX

NOTE: If defective, the wheel bearing assembly can only be serviced by replacement of the hub.

1. Raise and support the front of the vehicle safely and remove the wheels.
2. Remove the brake caliper assembly. Make sure not to twist the brake hose.

   NOTE: When removing the brake caliper it is not necessary to disconnect the brake hose. Be sure to support the brake caliper after removal.

3. If applicable, remove the ABS brake sensor from the steering knuckle.
4. Remove the brake rotor.
5. Remove the wheel bearing dust cap.
6. Remove the locking nut.
7. Remove the wheel bearing locknut and washer.

   NOTE: The hub bearing is a sealed type and will be removed with the hub assembly.

8. Pull hub assembly toward you to remove the hub assembly from the spindle.
9. Remove the tie rod joint and lower ball joint.
10. Disconnect the knuckle from the strut.

    To install:

11. Connect the knuckle to the strut.
12. Install the tie rod joint and lower ball joint.
13. Lubricate the spindle and slide hub assembly onto spindle.
14. Install the washer and wheel bearing locknut.
15. On 1993–94 models, torque the wheel bearing locknut to 147 to 216 Nm (108 — 159 ft. lbs.).
16. On 1995–97 models, torque the wheel bearing locknut to 152–210 ft. lbs. (206–284 Nm.).
17. Turn the hub assembly several times in both directions to seat the hub.
18. Measure the wheel bearing axial end-play.
    1. Axial end-play — 0.0020 inches (0.05mm) or less
19. Clinch the locking nut with a hammer and chisel.
20. Install a new dust cap.
21. Install the ABS sensor and tighten the mounting bolt to 96–144 in. lbs. (11–16 Nm).
22. Install the brake rotor and caliper assembly.
23. Install the front wheels.
24. If the brake line was disconnected, bleed the brake system.