NEW Hub wont go all the way on spindle

[jayard78]

I just bought a two new hub kits and while putting the first on I had trouble getting it on all the way. The hole the spindle goes through seems go be the same as the old on but it won't get on there. I know it is not going on all the way b/c I can not get to the pin hole in the spindle to put the pin in.

There is this rubber ring on the inside of the hub hole on the backside of the hub that is not allowing it to go on.

 

[Al Kungel]

Re: NEW Hub wont go all the way on spindle

I think I know what the problem is. First I am going to attach a picture of a basic trailer hub.

As far as I know there are only two reasons why the hub does not go all the way on the spindle.
a) the replacement hub is not the correct size -highly unlikely.
b) the cups (races) are not seated all the way in the hub.

Check that the new hubs are the same size as the old. If they are, then the problem is that the cups (or races) are not fully seated within the hub. Note there are two cups (inner and outer). Take a look at the picture of the hub and you will see the outer cup. It looks very smooth and is tapered to hold the smaller of the two bearings. Although the cup looks like it is part of the hub it can in fact be driven in or out. The back of the hub behind the grease seal is exactly the same except the cup and bearing are larger.

With regards to your comment about the "rubber ring on the inside of the hub hole on the backside of the hub that is not allowing it to go on" you are referring to the grease seal. Enlarge the picture that I attached and it should look like the image in the top right hand corner. That seal is meant to go over the axle and is designed to keep water and other contaminants out of the hub assembly. Be careful not to damage the seal or you will have trouble down the road.

 

[ReelPlumber]

Re: NEW Hub wont go all the way on spindle

I know that the 2007 magictilt trailer i have had a different size spindle and hub assembies than the norm, made by UFP. Their rear seal is made for a smaller diameter spindle. I replaced my torsion axels and installed new kodiaks. My spare tire hangs on one of the factory spare spindles and with the new hub and rotor mounted on it you can see the the seal does not even come in contact with the spindle.

 

[jayard78]

Re: NEW Hub wont go all the way on spindle

I got it on. In the end I measured the spindle to make sure that is was the same size as the back bearing and then I used the big nut to tighten it down until it would not go any further.

In the end brute force won.

Thanks