In the previously described method of vertical motor alignment, it is tentatively assumed that shims under existing vertical mounted motors are rare enough to be declared extinct. However, when a vertical mounted motor does rest on shims, there is another way of calculating misalignment corrective shim packs that one could call an off-shoot of the wagon-wheel theory. (Briefly go to and study FIGURE 1 in the chapter titled: THE WAGON WHEEL METHOD).

Then in this chapter, the hub is the center of the motor shaft at the elevation of the split line, but is physically controlled by the presence or absence of shim placement or removal at the eight shim points. The N/S, then the E/W fulcrum lines (FIGURE 3) are the beginning points for lateral dimensioning in this text, as will later be demonstrated. Each illustrated shim calculation in the next several pages will be done in direct accord with said fulcrum locations, the demands of the current indicator readings as shown in FIGURE ALFA below and the rim and face format as described in FIGURE 2. FIGURES 1 and 1A.