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The wheel hub bearings on your ATV or UTV will no doubt need to be changed out at some point. It’s not that hard of a job to do yourself with basic hand tools you probably already have. They do make specialty tools to make the job easier, but I’ve done this with ordinary tools everyone already has in their garage.
The steps I’m going to go over are universal steps for all pre 2010 ATV and UTV wheel hub bearing replacements. For ATVs or UTVs made after 2010 the steps will be similar and you may to also read the alternate wheel bearing replacement section at the bottom of this article.
There may be slight differences from machine to machine. But you’ll get the idea of what to do, and should be able to handle any slight differences your quad has. Having your service manual handy will help. And with all maintenance projects, it’s best to wear eye protection and gloves.
Here are the steps to replace your wheel hub bearings (I explain each step in more detail below)
Before I go into more detail about each of these steps, lets make sure you really do need to replace your wheel hub bearings. It’s not an extremely difficult job, but can take a bit of time and requires you remove a lot of parts from your quad. So lets make sure it’s necessary.
You’ll be able to tell if your wheel hub bearings are bad by the way your ATV or UTV is handling. One of the most common symptoms is a grinding sound and feeling when riding. You may also hear some clanking or banging type sounds coming from the wheel hub.
If they get bad enough, you could even feel vibrations and wobbling when riding. A wobbling feeling could also mean other things like you need to Balance Your ATV Or UTV Tires. If you notice the machine pulls left or right when braking, that could be a sign of bad wheel hub bearings as well.
If it’s been a while since you’ve last replaced them, or you have an older machine, it’s a good idea to do the replacement if your sure the problem isn’t your brakes or tires.
To do a manual check, jack up the wheel in question and try to move it back and forth. If the wheel is bolted on tightly but still wobbles back and forth, you probably need to replace the wheel hub bearings.
Most bearings come sealed, but over time, water and dirt will still find its way in there. There are ways to make the bearings last longer, which I’ll talk about later on. But eventually, they need to be replaced. Now on to the steps.
This goes without saying I suppose, but the ATV needs to be jacked up and remain so during this entire process. It’s a good idea to put in on jack stands as this can take a while and you don’t want your jack to fail.
Another safety measure you can take, after you take the tire off, put it under the quad near the jack stand. This is good to do just in case the machine falls off the jack or jack stands somehow. If you have a leg under there, it could save you a lot of pain.
I always start by loosening the lugs before I jack it up. That way it’s easier to remove when the ATV is lifted. You don’t have to worry about rocking the machine while its raised up if you get a stubborn lug nut.
Remove Brake CaliperThe caliper will typically be bolted on with two bolts, either an allen head bolt or a 12mm bolt.
Remove both bolts and the caliper should come off easily.
This may be a good time to Change The Brake Pads On Your ATV if they need to be done.
The caliper may have a line going into it, that’s ok you don’t need to remove that or do anything else with the caliper. Just move it and let it sit somewhere out of the way the best you can.
Remove Axle NutAfter you’ve got the caliper off, it’s time to remove the castle nut holding the hub in place. Usually there will be a cotter pin holding the castle nut in place.
This is to prevent the nut from loosening while you ride. The cotter pin is easy to remove with a pair of pliers. Some machines will have a stake nut here instead of a castle nut.
I found it easiest to remove the castle nut with an impact wrench. Sometimes they can stuck on there pretty good, and if you don’t have a breaker bar, doing it by hand can be tough.
Once the castle nut is off, you can remove the hub, which will usually have the brake rotor attached to it. Some machines will have a guard mounted on the knuckle behind the brake rotor. Remove the guard, this is easy to remove and is usually only held in place by a few bolts.
The upper and lower ball joints will be held on to the knuckle by nuts usually with cotter pins in them.
Remove the cotter pins and take the nuts off, you should be able to slip the ball joint out of the knuckle after that.
They sometimes take a little persuading, but usually come out pretty easily with a little hit from a hammer.
Do this for both the top and bottom ball joint connections to the knuckle.
Remove Tie Rod Ends From KnuckleTo remove the tie rid ends, you will typically need two wrenches. Most of the time they are about one size apart, that’s helpful if you only have one of each size wrench.
The bolts for the tie rod ends will most likely be held in with cotter pins too. Remove the cotter pins and bolts holding the tie rod end into place.
Once the bolts are off the tie rod end should easily lift up. Just pull it up out of the knuckle and move it out of the way. There is no need to take the tie rod end apart any further than this, you can just rotate it out of your way.
Remove Shock Absorber BoltYou only need to remove the bottom shock absorber nut and bolt. You will need two wrenches for this part as well.
The shock absorber is held in by a bolt and nut set up connecting to the swing arm.
I found it easier to hold the bolt in place with a wrench and use an impact wrench to remove the nut.
Once the bolt and nut are removed, you should be able to move the shock absorber up and out of your way.
On some models of ATV or UTV, it will help make this whole job easier to do this step right after you’ve removed the wheel. You will notice a better range of motion in the whole shock and swing arm assembly after you remove the shock absorber.
It can give you easier access to the other parts you need to remove in the previous steps. I’ve just always done it this way and never had any issues, it depends on your machine and how you want to go about it.
Remove Knuckle From SuspensionAfter you’ve removed the shock absorber bolts and got it out of the way, you should be able to just pull the steering knuckle assembly off the axle. Sometimes it can be a bit stubborn and you’ll have wiggle it to get it started.
Remove Outer Seal And BearingsNow you’ll need to remove the seal and bearings from the steering knuckle. The seal will need to come out first.
They do make a special tool to make this easier like this Jecr Bearing and Seal Puller Tool from Amazon.
But I’ve got it done with just a screw driver before. Don’t get me wrong the seal puller tool makes the job a whole lot easier, and is useful for other projects as well. But you can get the seal out with a screw driver if your persistent enough.
To get the bearing out you’ll need a long center punch. Keep tapping around the bearing to keep it centered as you knock it out. You will most likely not be able to push the bearing clear through from one side of the knuckle to the other, so the bearings will need to removed from both sides separately from the inside out.
Clean Knuckle And Install New BearingsOnce you’ve got the seal and bearing out of the knuckle, it’s a good idea to clean the knuckle of any dirt and debris that might make installing the new bearing more difficult.
As for the bearings you use, it’s up to you. There are plenty of options out there, just make sure you get the right ones to fit your machine. I like using the All Balls bearings and seals, I’ve had good luck with them in the past.
Here’s a link to an All Balls 25-1404 Wheel Bearing Kit on Amazon, the kit comes with the bearing and seals. That’s a good place to start looking for the bearings and seals to fit your quad.
Once you have the bearings you need to install them in the knuckle assembly just as they were when you took them out. There is a sprecial bearing press you can use to press the bearings back in.
But I’ve always just used a large socket that is about the same size as the bearings and hammered them back in. Be careful not to hit the inner part of the bearings assembly because that will damage them. Use the right size socket that lines up with the outer edge of the bearings assembly. You could also try using the old bearings if they’re still intact, they should be the same size after all.
The bearing seal will go back on the outside of the bearings after you’ve got them installed. They should seat nicely on the outer edge of the knuckle like they were when you removed the old ones.
Make sure you don’t forget the spacer between the bearings if your model has that.
That’s it, you’re done replacing the wheel hub bearings on your ATV or UTV, now it’s time to put it all back together. Everything will go back together the same way took it apart just follow the steps above in reverse.
I do recommend you use all new cotter pins. People will say you can re-use them, and I’ve seen people re-use them successfully. But they’re just so cheap, and it’s recommended you use new cotter pins every time so that’s what I do.
Here’s a link to a 555 Assorted Piece Set Of Cotter Pins for around 12 bucks on Amazon. I also recommend using a new stake nut instead of re-using the old one. This only applies if you have a stake nut instead of a castle nut from the remove axle nut step.
The wheel bearings on your ATV or UTV will just go bad over time. The best thing to do is make sure you’re installing the bearing seal the right way. Riding through mud and water is one the best parts about off-roading, so eventually water and dirt will get in there. But a good seal can help them last longer.
Also, avoid pressure washing the hub assembly. It’s ok to pressure wash your machine to clean it after a muddy ride. Just be careful around the bearing seal and hub assembly area. The pressure washer can push water into the bearing making them wear out faster.
Most of these steps will be the same, except you will be dealing with the hub assembly to replace the bearings. Also, you will want to freeze the new bearings before replacing them in the hub.
To remove the old ones the process will be the same also. Use a long punch or other tool to remove the old wheel bearings.
Some models will have a snap ring clip holding the bearing in place. You can easily remove this though with a pair of snap ring pliers.
Use a heat gun to warm up the hub assembly where the new bearings need to go.
Take the new bearings out of the freezer and press them into the hub. You can use the old bearings or a large socket and hammer to help push the bearings in.
Put everything back together the same way you took them apart and you’re good to go. Remember to use all new cotter pins to keep things tightened down the way they’re supposed to be.
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01/09/2017
As you know, wheel bearings on ATVs are, so to speak, consumables. The reason for this is the constant operation in difficult conditions, namely in water, mud, swamps. You can replace wheel bearings at home, having a set of tools, a mount and a vise. We give instructions for replacing the front wheel bearings using the 2012 Yamaha Grizzly 450 ATV as an example.
To simplify the search for the necessary parts, we will provide a diagram and part numbers:
- Numbers 18.45 on the diagram - wheel bearing, you need 2 pieces per hub (Art. 93306-006Y2-00)
- Numbers 19.46 on the diagram - steering knuckle oil seal on hub side, 1 pc per knuckle
(Art. No. 93106-38046-00)
- Numbers 20, 47 on the diagram - steering knuckle oil seal on drive side, 1 pc per knuckle
(Art. 93106) -38047-00)
- Numbers 21, 48 in the diagram - a spacer between the bearings, does not need to be replaced. (Art. 90387-30008-00)
ATV suspension parts manufacturer All Balls has a wheel bearing replacement kit that includes everything you need (2 bearings, 2 oil seals). It also has a third oil seal, but it is designed for other equipment, as the kit is also suitable for other models of Japanese ATVs. (Art. 25-1108).
Let's describe the disassembly process step by step:
After the knuckle has been completely freed from the old oil seals and bearings, it is necessary to wipe its inside well so that no dirt remains. Before assembly, be sure to lubricate the surface with grease (lithol, etc.).
Assembly process:
This completes the process of replacing the front wheel bearings on the Yamaha Grizzly 450 ATV. For convenience, the work was carried out in pairs.
In our store you can order the necessary spare parts for your Yamaha ATV, much in stock and on order!
ATV Club
September 29, 2012
Our world is ruled by brands. And now, while collecting material at the choice of the “Japanese” with history, I was dealing with a whole army of followers of the brand from the Land of the Rising Sun (and sake). Their name is hondovody, their religion is better than Honda only Honda can be.
Indeed, Honda is a good choice for doubters. When you want to get cross-country ability, reliability, efficiency and comfort from one ATV, it makes sense to take a closer look at the TRX 500. This quadric has been produced for more than a year, but it is also modernized with enviable regularity.
EPISODE ONE. UNDER HOOD
The Honda TRX 500 first rolled off the production line in 2008. This model has several names depending on the market. In North America, the most quad-packed area, it's called the FourTrax Foreman Rubicon. Well, we have a Honda TRX 500 FA.
The 500 engine has a single-cylinder liquid-cooled engine. Despite the fact that the power system is carburetor, exhaust standards comply with the Euro-3 standard. With the motor, everything is extremely simple: when inspecting, do not lose sight of the leak where it should not be. In a word, the Japanese heart is strong, but liquids whipping through the gaskets and past the hoses should stop you.
EPISODE TWO. AUTOMATIC QUEUE
The main difference between the "500" TRX and its competitors is the transmission. This quadric has a Hondamatic gearbox, that is, an electronically controlled hydromechanical “automatic”. As a bonus from Japanese engineers, there is a manual shift mode, which they called ESP. It allows you to change gears with steering "petals" and fix them rigidly. According to active exploiters, this "automatic" can really slow down the engine and, moreover, starts off without jerks and axle boxes - a real find for scouts looking for themselves on rough and swampy terrain.
To improve the patency in the transmission, a self-locking front axle differential was used. As soon as the difference in the rotation of the front wheels exceeds a certain value, an automatic lock is activated. According to statistics, this knot has an enviable longevity.
EPISODE THREE. SUSPENSION BRIDGE
As for the suspension, everything is traditional here: the front one is independent, on two steel wishbones. Behind and completely dependent beam-bridge. But, I note, here, unlike the younger models, there are two shock absorbers. But the braking system is unusual. Front - hydraulics with discs on the front hubs. Behind - completely (hear, completely!) sealed drum mechanism with a cable drive. This means that after a winter ford, when the calipers may freeze, the rear brakes will remain in service anyway. The TRX 500 suspensions have a good wear life, although the nature of the operation by the previous owner, of course, matters.
None of the respondents has yet complained about handling, despite the rear dependent suspension. On the contrary, quadromaniacs note the amazing lightness of the steering wheel and the obedience of the unit.
What else is worth noting? The dry weight of 273 kg for such a very difficult vehicle is impressive, as is the payload of 220 kg.
Stanislav, Honda TRX 500 FA 2008:
– I have been using Honda for my off-road needs for quite a long time, the benefit and experience allows, and there is something to compare with. Drove almost 6000 km. Reliability and excellent handling are the main strong point of the model. Reliability is not a fairy tale! My quad once pulled out two colleagues from the virgin lands at once! It steers nicely, but sometimes I still notice a certain heaviness of the steering wheel, depending on the coverage under the wheels. The suspension is moderately energy-intensive, moderately soft. However, after replacing the standard tires on the 25th wheel (and then on the 27th wheel), it became somehow harsh and uncomfortable, unpleasant pokes on the steering wheel appeared in the ruts. The only thing that upset from the very beginning — the springs are not regulated in any way. But I really like the box! Provides a rigid connection with the wheels, after the variator it is acutely felt. The quad is perfectly braked by the engine, which increases the survivability of the pads. And the pickup is good at any speed. "Automatic" switches almost imperceptibly and generally works very adequately. The most pleasant impressions from the TRX 500 remain after the fords. It's definitely his element! Patency is good, but not the best - due to lower ground clearance than others.
It's disappointing that there is no downhill system. And one more of the shortcomings: not a very well-thought-out design for the security of components and assemblies and access to them - take at least the same battery under the wing or the rear brake! It's better not to talk about changing the oil at all.