Re: Picking up boat on old trailer.
Pete,
Assume the worst and prepare for it. Depending how far from civilization you are trailering the list can be short or long. You might inquire of the current owner when the axle bearing were last serviced. If this was a while ago, I would plan on stopping ASAP at a filling station and have the axles bearings serviced and greased.
I bought a trailer in FL and pulled it unloaded to Ohio with out a problem, but I had the owner pop the dust covers and inspect the bearings before I started on the trip.
Stop a few times (5, 20, 50, 150 miles) to check both the tires and the axle temperatures. You should be able to lay your hand on the spindle with out it being too hot to touch. If its hot or both sides have greatly different temperatures stop at a service station or marina and resolve the problem. Road side is no place to solve the difficulties.
For a couple of miles (50 or less): take a tire pressure gage and assure the tires are filled to max rated pressure. Usually 40 to 60 psi. I would bring a grease gun and if bearing buddies are installed, give it a couple of squirts.
Make sure the bearing preload is not to great. If you can get the tire off the ground, assure they spin freely with little drag.
For longer hauls: Bring a spare tire and rim, a scissor or bottle jack to lift the axle, a set of new bearings, and new races.
Best of luck during the trip and enjoy your new toy.
erie_guy
Port Clinton, OH