LINEAR VIBRATION CONTROL (cont)

TM-55-1930-209-14P-9-4 Water Purification Barges (NSN 1930-01-234-2165) Electric Power System Manual
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LINEAR VIBRATION CONTROL TESTING AND ADJUSTING Figure 2 shows the assembly of a 5N39, 5N40, 5N41, or 5N42 generator to a 3408 PC-TA Engine having a 7N6395 flywheel assembly. Note that the fan of these later generators has a long pilot diameter fitted into the flywheel pilot bore. Balance weights are added to the flywheel when driving single-bearing generators. FIGURE 2 Necessary dimensions for coupling other manufacturers' generators are given in Figure 3. The required balance weight assembly for various generator rotors is in Chart G. Dimensions for local fabrication of the weights are Figure 5. Weights are assembled on the outer diameter of the flywheel directly opposite the flywheel balance weight (pressed-in dowel). See Figures 1 and 4. FIGURE 3 117

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