B2620 rear wheels not centering?

[SergioA]

Hello, has anyone had problems with their rear wheels not centering on the hub, and having no tapers on the rims, for the supplied taper nuts to sit on? Just curious, as mine was like that, and I had to get the rim tapers machined by a machine shop, and also had a sleeve built to put on the hub so the rim would sit on it properly.

 

[pjbci]

How much off center are you refering to? 1/16-1/8?

 

[SergioA]

Yes, about 1/8 around the hub.

 

[BrierPatch]

Doesn't sound like anything I have heard of before on here. I have had the rear wheels off on mine when I first got it, but not since. I don't remember there being an issue, but next time I have it out I will try and look at it. Almost sounds like it is the wrong wheels or something? Is this a new tractor? Whats dealer say about it?

 

[SergioA]

Yes this is a new tractor that I bought in fall 2010, the dealer kinda did not want to see the problem, but he ended up paying my machine shop bill with parts.
Take a close look at the center hub of your rear wheels, check to see if the center of the wheel is resting on it, or if it's off center. Mine was not resting on it and was off center, on top of that they had taper nuts intalled on no tapers on the rim! I had nice tapers on the opposite side of the rim, but these rims cannnot be turned arround. I have checked with another dealer, he did agree that this was not normal, but the tractors hed had where all the same. Kubota said to turn the nuts arround, on the flat side and add a washer, which makes not sense as it does not center the wheel. Let me know what you find out!
Thanks!

 

[teg]

Do you have any before / after photos of it?

 

[SergioA]

Yes, I do, will try to post them this weekend, too busy at this moment!

 

[pjbci]

I have noticed a lot of newer tractors dont have piloted hubs or tapered nuts. Im pretty sure its not an issue because travel speed and wheel rpm, even @ road speed, is very low. 1/8th inch out of center isnt going to be noticeable or cause any problems or viabration. I think its just another example of manufacturers cutting back everywhere they can.

 

[SergioA]

I have included pictures, hope you can see properly? The left picture shows the wheel not being centered with the hub, and the second picture shows the taperless rim, with the mark of the nut's taper. They might be cutting back on quality, but let me tell you that they haven't cut back on the price too much! To me, any wheel that is not turning truly, is going to come loose someday!

 

[pjbci]

Oh I agree completely.

 

[lreops]

To me, any wheel that is not turning truly, is going to come loose someday!

How many hours do think this wheel has worked hard and survived? With a FEL also.



You would be really surprised

 

[s219]

I have included pictures, hope you can see properly? The left picture shows the wheel not being centered with the hub, and the second picture shows the taperless rim, with the mark of the nut's taper. They might be cutting back on quality, but let me tell you that they haven't cut back on the price too much! To me, any wheel that is not turning truly, is going to come loose someday!

There should be special lock washers under the nuts, and the lock washers center themselves in the shoulders that are stamped on the wheels (look closely, you can see the shoulders in the photo). That's how these wheels are intended to be mounted and centered. If I get a chance tomorrow or the next day, I'll take a pic of my lugs.

 

[s219]

I attached a close up of one of the lugs in my rear wheel (B2920, same wheel as the 2620).

You can see the lock washer behind the nut, and note the stamped shoulder on the wheel that centers them on the lug. All the lug nuts/washers will center into a shoulder, and that should center the wheel.

 

[pjbci]

Is that one of those cone shape washers with the split running paralel to the hole?

 

[s219]

Is that one of those cone shape washers with the split running paralel to the hole?

Looks like a standard flat lock washer, but I have never taken them off to know for sure.

 

[SergioA]

Hi S219, thanks for taking the time to reply and take pics. The thing with the lock washers is that if you have to remove your wheel it grinds steel off the rims as the lock washer bites when you turn the nut loose. Having a BH65, I have to remove the rear wheels to switch between the BH and 3pt hitch.
If you ever take tem off, check on the inside of your rims to see if you have a taper for the nut, as mine wher like that, it's as if they welded the rim plate on the wrong side.

 

[BrierPatch]

I finally took some pics of mine. They don't have lock washers, but seem centered. I didn't take a lug off, but I am guessing that the there must be a taper, because I know I didn't put any effort into centering them when I put them on.







By the way you shouldn't have to take your wheels off to put the bh65 on.

 

[SergioA]

If you have a chance, just remove one nut to see if there is a taper behind, I am curious.
As for the BH installation, how do you slide the pin to remove the 3pt arms, as mine is stiff, and I have to use a punch and a light hammer? I guess yours moves freely when you loosen the locking bolt? If so, how did you get it moving freely?
THanks.

 

[BrierPatch]

I just gave it a light coating of wheel bearing grease. Mine was a little stiff to begin with. I noticed that once the bolt was loose (all the way) if I rotated it a little (grab the lynch pin on the end or screw driver in hole) it would move easier almost as if there was a slight bend to it, but now it seems to move very freely regardless. It may just need the paint wore off. But it has never been so tight that I had to remove a tire and tap it out.
You might get some emmery cloth and give the rod a light polish. Works wonders, we do it all the time at work to tight tolerance fits that need cleaned up or are a little too tight.

 

[s219]

It turns out that there's a page in the 2320/2620/2920 owner's manual with more info on the lugs. Shows a sketch of each type of install. I think it was around page 50 or so.