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| 1) I drill the hub and install a grease fitting if it does not have one.
2) I then weld a 1/4" fine thread nut to the cap and install a 1/4-28 plug.
3) I repack the bearings then install the hub and torque.
4) When done I install the grease cap, remove the small plug and then completely fill the entire hub with grease until it purges out the hole. I replace the plug and I'm done.
I believe that hubs should be completely filled with grease. Any time they cheat and only pack the bearings, they go bad faster in my experience.
It's also a good way to keep water out. If grease fills it, there is no room for water.
I started this several years ago with the Yetter Magnum's we have as well as the Martin trash cleaners on the planter. When greasing those hubs I would either blow the seals out of the Yetter's or the caps off the trash whippers. The plugs have eliminated this problem because the extra grease pressure has somewhere to go.
I have been doing this for several years now, and it has more than doubled the life of bearings before they need rebuilds.
Once a year I remove the plugs and purge old grease out.
Just what seems to be working here... for now... | |
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Repacking bearings/hub
