3
➠
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 in the center of the work area with the center
spool
101 oriented as shown in Figure 1.
3—Secure blade retention sleeves
104 to the blade 200 using
machine bolt
V11 and locking nut X12. Tighten
3
⁄
8
" nut
X12 to
40 ft·lb
ƒ
.
4—Position the blade clamp blocks
103 around the blade shank so
that the blade
200 droops slightly downward when the blade clamp
hardware is tight.
5—Position the blade clamps and blade between the hub plates
102 to align bolt holes. Loosely install
5
⁄
8
" bolts
VBA, flat washers
W29 and self locking nuts X14 to secure blades. Finger tighten all
5
⁄
8
" nuts.
6—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.
7—Pull the blades radially outward until the blade retention sleeve
bears against the back side of the blade clamp.
Figure 2
Note
LEADING
EDGE
TRAILING
EDGE