I used to live up in NJ and rode on the Garden State Parkway, Rte 287 or the New jersey Turnpike a lot. From the beginning of spring until the middle of fall, I would see hundreds of trailers and other types of rv's parked on the side of the road, jacked up with one tire and rim off. The reason was very easy to see ... the rv owner didn't maintain his wheel bearings ... and now he's fried a bearing and probably tore up the stub axle ... and ruined his weekend as well.
And guess what kiddo's? You have the same type of axle bearing in the front of most of your buses.
I would NEVER take a vehicle I didn't know the history on a long road trip until I KNEW what kind of shape the axle bearings are in. So, today I am cleaning, checking and re-packing my front wheel bearings and replacing my front brake pads. And because I don't have a lot of time and my hands are as greasy as they can be, I'm not going to be taking pictures. BUT I did find you guys a very clear Youtube vid on how to deal with your front bearings.
Now the guy in the vid is replacing the bearings ... if you check yours and don't find any that have been chewed up, you can ignore the parts about removing the races, and skip to the packing part.
I also would suggest that you don’t let the calliper hang unsupported ... find an old metal coat hanger, cut it and use that wire to make a hanger.
Don't like this vid? There are hundreds more where that came from. This really is something that almost anybody can do.
... and let the old guy pass on a tip: SOME vehicles have wheel lugs ... on one side ... that HAVE LEFT HAND THREADS. These loosen CLOCKWISE.
The reason the manufacturer does this is to allow the centrifugal force created when the wheel is spinning to TIGHTEN these lugs if they hadn't been tightened properly.
The way to check? Before you loosen them lug nutz ... look at the end of the stud. If you see an "L" ... that's the mechanic's secret code for LEFT HANDED THREADS.
Don't get stuck on the road with an expensive breakdown ... that easily could have been prevented. Maintain those axle bearings!