Tuf-Lite III
®
5000 Series Installation Manual Page 3 of 8
May 2006
THRUST RETAINER (optional equipment)
Install proper load bolt (not provided) into top of fan shaft and
tighten (See Figure 1). Install thrust retainer channel on top
hub plate using existing hub spool cap screws. Torque cap screws
to 60-65 ft-lb. Install thrust retainer eyebolt and jam nut. Hand
tighten eyebolt. Tighten jam nut securely against top of thrust
retainer channel.
Figure 1
BLADE INSTALLATION
Remove blade clamp bolts, nuts, lock washers, and blade clamp
halves from hub. Assemble blade clamp halves over groove in
blade neck, and install into hub (See Figure 2). The thick lead-
ing edge will be to your left and thin trailing edge will be to
your right as you stand at end of blade.
Install clamp bolts through hub plates and blade clamp, putting bolt
heads on top, lock washers and nuts on bottom. Tighten lightly (See
Figure 3).
Figure 3
SET PITCH AND TRACK
Use Hudson EXACT-A-PITCH
®
digital protractor (See
Figure 4) or a bubble protractor to set blade pitch. Mount
protractor on a flat bar as a base and place it approximately 1”
from tip of blade. Note pitch on protractor. Rotate fan 360°,
noting high and low pitch readings. Locate place where pitch
reading is at mid-point between high and low readings, and set
pitch at that point.
Figure 2
Figure 4
EYE BOLT
JAM NUT
THRUST RETAINER
CHANNEL W/ NUT
HUB PLATE
HUB SPOOL
HUB SPOOL
BOLT
CUSTOMER
PROVIDED
BOLT
FAN SHAFT
