Last week during an off-road run with Side B, my front wheels started making a knocking noise... kinda like a dull - "thud... thud... thud.." while rolling, especially when turning left. Didn't happen when turning right, nor when going straight... and it got louder the faster I went.
Over the next couple of days, the noise got progressively louder until it started occuring when driving straight.
So I jacked up the Nav and had a look around, turns out the Right Front wheel had a LOT of play on it when I shook it back & forth. (none side-side nor when turning the steering wheel). Left front wheel was ok, no play on the wheel at all.
Nothing else seemed out of place, no leaks or loose stuff.
There was bad news and worse news - the bad news was it seemed the right front wheel bearing was now damaged and needed replacing.... the worse news was that Nissan made the Navara's front bearings sealed within the hub, can't press it in/out... and the worser news was that N&M only sold the ENTIRE hub, they didn't sell the bearings separate. Gone are the days where you could replace a wheel bearing by going to a machine shop with your hubs and pressing out the old bearings and pressing in the new ones.
So, called N&M.... each front hub for a 4wd navara costs $4000.00 TT... and they wanted me to bring in the vehicle so they could service it right away.
No... Way...
Immediately started calling around.... got another set of hubs from another source for MUCH less and it was genuine Nissan as well.
SO here's my mini-thread on how to change your front hubs on your Navara....
Tools needed:
- Full socket set, including deep-impact socket (sizes 14, 17, 19, 22, 32) plus ratchets & power bar /breaker bars
- jack & jackstands
- wheel spanner
- needle nose pliers
- large hammer
- flathead screw driver / pigfoot aka. crowbar aka pry-bar
1. Before jacking up the vehicle, loosen the wheel lug nuts on both sides of front wheels. Also a good time to try to break out the axle nut on both sides, using a power-bar/breaker-bar (i also used the iron handle from my jack to add extra leverage) and a 32-deep impact socket. Take off the cotter pin on the axle end before breaking the 32-axle nut.

2. Remove the wheels from the hub and then disconnect the ABS line that comes from the hub and connects to a jack just above the upper control arm. Remove ABS line from brackets and store safely, this line will come out with the Hub and the new Hub has it's own ABS line.


3. Remove the brake caliper assembly from the steering knuckle by using a 19-deep socket to unscrew the two bolts seen on the caliper here....


(I had some trouble removing the caliper assembly, so I thought I'd try removing the top half and then the disc pads, then the rest of the body came off easily... however if you can remove the entire assembly in one piece, it's much easier to put back in later...)
Pro Tip: get a piece of wire to hang the caliper assembly off the Upper Control Arm... this is to prevent the hydraulic brake line from snapping under the weight of the calipers and all the fluid leaking out.

Pro Tip: don't place the rotor on bare floor!! Remember it's a machined surface that's constantly under friction.... so make sure to put the brake rotors onto a soft surface like a cardboard box!

4. Next step is to get the hub out from the steering knuckle. Luckily, Nissan made it relatively easy to get the hub out, all it's held down by is 4 size 19 bolts on the rear-side of the steering knuckle. Easy to take out with a ratchet and 19-socket, may have to use a power bar if yours is caked in mud and mild corrosion like me (*** tip - hit it with some WD-40 beforehand to make cracking the bolt a bit easier)


(** see the 4 bolts right next to the velocity joint boots? Just crack those off and the hub is supposed to come off easily).
Unfortunately, my hubs were a bit corroded and caked in mud/sand.... so it took quite a few whacks with a hammer and use of the pry bar to get the hub off the steering knuckle once it was unbolted..... take your time and have patience, try hitting the hub on alternating sides, front/back, side/side and use the pry bar or large screwdriver if you have one. A good few solid whacks should get the hub loose, and you can still use WD-40 if you're having trouble cracking it out.
5. Once the hub comes out (may take a few whacks, so take your time and be patient!!) try to clean out the brake shield with some diesel/pitch oil.... and try to clean the hub-seat on the steering knuckle as well. Apply some grease to the splines of the hub and on the axle too, to help keep moisture away from vital moving parts. The bearings are sealed, so no need to grease the bearing and bearing collar.



6. Almost done now! Simply line up the splines on the new hub, replace the brake shield properly onto the knuckle and then bolt-back in the hub onto the steering knuckle. Re-assembly is basically a reverse of the scrap-down process.... so take your time and make sure you re-check and re-torque all the bolts and nuts before putting back on the wheels!
