Online Community of Zenith Builders and Flyers
There are several YouTube videos that cover packing of a wheel bearing. Here is just one I found out there: https://youtu.be/BhL1uAp_WCw
I just used a small tub wheel bearing grease from the local auto parts store. In the 10 years since I have been flying, I have cleaned and re-packed my bearings 3 or so times and have not seen any issues with them.
I have been packing wheel bearings, for many years, on heavy equipment, by using a needle point on a
grease gun. They are inexpensive at a car parts store and puts the grease inside the rollers where it
counts and not much mess.
The bearings that came with my Matco wheels in the 750 kit were sealed bearings. Did you get some bearings that require packing from the Zenith kit?
Mine have a seal as well, but they don’t come pre greased.
I’m confused, I thought sealed bearings require no grease.
The bearings that came with my Matco wheels on my 2017 750 kit are just standard Timkin style
tapered roller wheel bearings which required packing and also came with the seal located
directly under the adjustment nut. Most sealed bearings are ball bearings. I think newer vehicles
are using ball bearings for wheel bearings, but most everything older used tapered wheel bearings
which always required packing. Side load and a couple other factors play onto the type of bearing
used. Hope this helps.
Just FWIW, my 750 STOL kit #7688 (purchased in sub-kits between '09 and '10) came with sealed bearings in the Matco wheels. After about 500+ hrs/6 years, I began to notice some bearing noise when pulling the plane out of the hangar. I replaced them with Matco-supplied sealed bearings that were reasonably priced. They'll sell either the bearings alone or wheel hubs with the bearings pre-installed. Since I had a hydraulic ram press, it was very simple to push out the old bearings and install the new ones myself.