The hub bearings in the Nissan Navara help the wheels to turn in a smooth, axial motion. This helps keep tire grip and steering at a safe level. Over time constant use and high speeds can cause the wheel hub bearings to become worn and damaged. If you hear a grinding noise coming from any of your wheels, it is an indication that you need to remove the bearings from the hubs of your Navara and replace them with new ones.
Place the car jack underneath the frame of your Nissan Navara. The jack needs to be slightly off centre, closest to the wheel you are replacing the bearings on. Raise the vehicle up off the ground. Place a jack stand underneath the frame next to the car jack. Lower the car jack slightly so the Navara rests on the stand.
Locate the lug bolts which fix the wheel in place. Use a lug wrench to remove the bolts. Lift the wheel away from the axle and place the wheel and its bolts in a safe area for reattachment later.
Remove the mounting bolts secured to the brake caliper using a socket wrench. Lift the brake caliper from its bracket. Place a piece of metal wire, such as a coat hanger, through the spring coil on the caliper. This will suspend the caliper and prevent the brake line from becoming damaged.
Use the wrench to remove the bolts on the barrel of the wheel hub which fix the hub in place. Rock the hub back and forth until it comes loose in your Navara wheel assembly. Pull the hub from the wheel and move to your work area.
Slide the inner and outer bearing seals from the wheel hub. Open up the bearing seals and remove the damaged wheel bearings. Discard the bearings in the trash. Use an old cloth to clear all of the grease from the seals.
Lightly coat the new bearings in grease and place them in the bearing seals. Slide the seals back in to the wheel hub. Place the wheel hub back in to the wheel assembly and secure in place by reattaching the mounting bolts to the barrel.
Remove the hanger from the brake caliper and slide the caliper back in to its mounting bracket. Secure the caliper in place by reattaching the bolts. Place the wheel back on the axle and reconnect the lug bolts. Raise the jack up slightly. Remove the jack stand from the frame of the Navara and then lower the vehicle to the ground. Repeat the process on the rest of the wheel hubs.