Hudson 5000 User Manual

Tuf-Lite

®

and

Tuf-Lite II® Fans
5000 Series Hub

INSTALLATION MANUAL

Adjustable Pitch Fan Assembly

22’ thru 30’ Diameter

Hudson Tuf-Lite® and Tuf-Lite II® fan blades

Hudson Tuf-Lite® (black) fan blades are made from fiberglass reinforced epoxy resin having a very high
strength-to-weight ratio and corrosion resistance (not shown).

Hudson Tuf-Lite II® (white, prev. blue***) fan blades are made from fiberglass reinforced vinyl-ester resin
having a very high strength-to-weight ratio and superior ultra-violet and corrosion resistance. An elastomeric
blade/holder joint cover (not shown) prevents moisture from entering the blade (shown above).

The individually balanced blades can be replaced independently – matched sets are not required.

Installation Manual 5000 Page 1 of 8 April 2010

RECOMMENDED TOOLS

l Long T-Handle Allen Wrench Set (3/16” to 3/8”)
l Medium Size Flat Head Screw Driver
l Brass Ball Peen Hammer
l Flat Bastard File
l 240 Grit Sand Paper
l Anti-Seize Lubricant
l WD-40
l 12” Crescent Wrench

INSTALLATION PROCEDURES

ASSEMBLY WITH BUSHING

Clean all mating surfaces between hub, bushing and shaft. All
grease and lubricant should be removed, leaving the mating sur­faces dry.

If there is no shoulder on shaft to prevent bushing from sliding
down shaft, slide spacer/sleeve (not provided) on shaft before bush­ing or use a thrust retainer (optional equipment) on top of hub.
Slide bushing and key onto shaft until flush with end of shaft. The
shaft size determines the bushing type (R2, S2, or U1). Lock bush­ing on shaft by tightening the set screw in flange with an Allen
Wrench. Line up key and set hub on bushing. Engage the three (3)
cap screws in flange of bushing into hub spool, using a torque
wrench with a socket, and tighten evenly. Use the following table
to determine the proper tools and torque values.

l Shop Towels
l Exact-A-Pitch
l 25 ft. Measuring Tape
l Pencil or Marker
l Open/Box End Wrench Set (1/2” - 1-1/2”)
l Socket Set for 1/2” Drive (1/2” - 1-1/2”)

l Torque Wrench(s) Rated for 0-200 ft-lb.

®

Digital Protractor (P/N 62375)

ASSEMBLY WITH STRAIGHT SHAFT
(NO BUSHING)

Clean all mating surfaces between the hub and the shaft. If there is
no shoulder on shaft to prevent hub from sliding down shaft, slide
spacer/sleeve (not provided) on shaft before hub or use a thrust
retainer (optional equipment) on top of hub. Install key in shaft.
Line up key and keyway and set hub on shaft. Tighten set screw(s)

in hub.

ASSEMBLY WITH TAPERED SHAFT
(NO BUSHING REQUIRED)

Clean all mating surfaces between the hub and shaft.

Allen Cap Torque

Bushing Wrench Screw Socket (ft-lb)
Size Size Size Size Dry
R2 3/16” 3/8” 9/16” 29
S2 3/16” 1/2” 3/4” 70
U1 3/16” 5/8” 15/16” 140

Align keyways and install hub. Install retainer plate and cap
screw(s) with lock washer(s). Shaft size determines what size cap
screw is necessary. Using a torque wrench with a socket, evenly
tighten cap screw to recommended standard per table below.

Torque Value
Cap Screw Socket (ft-lb)
Size Size Lubricated Dry
5/8” NC 15/16” 100 110
3/4” NC 1-1/8” 125 130
1” NC 1-1/2” 150 160

NOTE: Retaining arrangement varies with gear shaft design.

Installation Manual 5000 Page 2 of 8 April 2010

THRUST RETAINER (optional equipment)

EYE BOLT

JAM N UT

THRU ST R ETAIN ER
CHAN NEL W/ NU T

HUB P LATE

HUB S POOL

HUB SPO OL

BOLT

CUST OME R

PROVI DED

BOLT

FAN S HAFT

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.

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 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 lead­ing edge will be to your left and thin trailing edge will be to
your right as you stand at end of blade.

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

Installation Manual 5000 Page 3 of 8 April 2010

Figure 4