dust cap keeps falling off the hub

[Fishing Dude too]

Re: dust cap keeps falling off the hub

Would post what the bearing compaies recamend how full a roller bearing should be with grease, it's in the book. Oil is the best lube for roller bearings, while grease is the best for plain bearings. Hope you have set you bearings with the proper clearance when you tightened them down. Oh will say if you overfill you bearings with grease they become a grease pump.

 

[BF]

Re: dust cap keeps falling off the hub

As someone else said, I think you're buying the wrong sized ones. There are a few sizes that are subtly different.

 

[Fishing Dude too]

Re: dust cap keeps falling off the hub

When I talk about how tight or loose your bearings should be this is the tolorance of trust bearings when tightened down for max life there is a multiplier to this. For most apps would be 3. Will post multiplier if ask as have at work in my bearing log book.

http://www.koyousa.com/KoyoCatalog/technical/04/4_4_1.htm

 

[j.a.g]

Re: dust cap keeps falling off the hub

I have measured them with a digital caliper and they measured close to 1.968. The dust caps from napa say 2" and the bearing buddies that I tried are 1.968.

 

[j.a.g]

Re: dust cap keeps falling off the hub

I am not sure how tight or loose the bearings are but I tightened the nut down then backed it off until the cotter pin would fit and the wheel would spin freely with no wobble in the wheel.

 

[Kiggsia]

Re: dust cap keeps falling off the hub

I had the same problem. My solution was simple although a bit tacky looking. I used the soft vinyl dust caps that just slide over the bearing buddy and clamped them down with radiator hose clamps!

 

[j.a.g]

Re: dust cap keeps falling off the hub

I think I found the problem. I jacked the trailer up and spun the wheels and the hubs were loose. I don't know how it happened when I replaced the bearings and reinstalled the hub I tightened the nut and backed it off until the cotter pin would fit like mentioned above. i am going on a short trip with the boat on Sunday so I will see if this solved the problem.