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Note
Figure 2
Fan Assembly Instructions
The following instructions apply to installations having straight
bores or tapered output shafts without split taper bushings.
It is convenient to preassemble the fan prior to installation on
the driving shaft.
1—Select a large open area corresponding to the fan diameter.
2—Position the fan hub 1 in the center of the work area with the
blade sockets up.
3—Place a blade 2 in a blade socket on the hub. On fans where the
blades overlap at the hub be sure to have the leading edge under
the trailing edge of the forward blade. Refer to Figure 2.
4—Ensure the blade shank safety collar is inboard of the inner hub
rim. Refer to Figure 3.
5—Position the small U-bolt 3 over the blade shank and through the
hub. Finger tighten the self-locking nut with flat washer onto U-bolt
threads. Progressively tighten each leg of the U-bolt until blade is
held in place.
6—Pull blade radially outward to be certain the shank safety collar
is in contact with hub inner ring. Refer to Figure 3.
7—Repeat steps 5 and 6 as required with the large outer U-bolt 4.
8—Repeat steps 3 through 7 for all blades.
LEADING
EDGE
TRAILING
EDGE
➠
3
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