So you have a link for the harbor freight tool. Does it work for installing the bearing on the lower tree?
The H.F. tool has a variety of sizes of drivers, but to be truthful I cannot recall if I used that for either the top or bottom outer races. One side is tapered & one side is flat, so you can use it for seals (the latter) and the other side for outer races (the former).
http://www.harborfreight.com/10-piece-bearing-race-and-seal-driver-set-95853.html
I usually use a piece of pipe across the bearing for the top outer race, tap lightly all around to get it started, make sure you get it even or you need to remove it & start over. Make sure it's fully-seated when you are done. Most people use the old race as a driver.
For the bottom bearing, ONLY use force on the INNER race that seats against the stem. I use an old inner race which I widened the inner hole a bit (so it won't be an interference fit too!) & a piece of pipe which slides over the stem and then against the old bearing (widened hole diameter) race, with the new bearing under that. Tap against the length of pipe until your new bearing is seated on the triple tree, don't forget any dust seal or other piece which is supposed to be inserted first, before the bearing is seated; refer to your factory assembly manual for the proper pieces.
Another way you can do it is to use a piece of all-thread and a length of pipe over the steering stem, the all-thread sticking above & below the stem, double-nut the bottom of the all-thread to hold it stationary and use a deep socket and a fender washer or two on-top, then a nut, and tighten the nut on the all-thread so the pipe beneath the nut/washer(s) and pipe, (with the old inner race with the slightly-widened diameter) draws together the lower race against the bottom triple tree.
Or, take it to a good machine shop and pay. They will use a hydraulic press.
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