AAON RN SERIES Installation Operation & Maintenance page 61

Segment Installation & Replacement
Wheel segments are secured to the wheel
frame by a Segment Retainer which pivots
on the wheel rim and is held in place by a
Segment Retaining Catch.
Segment Retainer
To install wheel segments follow steps one
through five below. Reverse procedure for
segment removal.
1. Unlock two segment retainers (one on
each side of the selected segment opening.
2. With the embedded stiffener facing the
motor side, insert the nose of the segment
between the hub plates.
Segment Installation
3. Holding segment by the two outer
corners, press the segment towards the
center of the wheel and inwards against the
spoke flanges. If hand pressure does not
fully seat the segment, insert the flat tip of a
screw driver between the wheel rim and
outer corners of the segment and apply
downward force while guiding the segment
into place.
4. Close and latch each Segment Retainer
under Segment Retaining Catch.
5. Slowly rotate the wheel 180º. Install the
second segment opposite the first for
counterbalance. Rotate the two installed
segments 90º to balance the wheel while the
third segment is installed. Rotate the wheel
180º again to install the fourth segment
opposite the third. Repeat this sequence with
the remaining four segments.
Wheel Drive Motor
Replacement
1. Disconnect power to wheel drive motor.
2. Remove belt from pulley and position
temporarily around wheel rim.
3. Loosen set screw in wheel drive pulley
using a hex head wrench and remove pulley
from motor drive shaft.
4. While supporting weight of drive motor in
one hand, loosen and remove (4) mounting
bolts.
5. Install replacement motor with hardware
kit supplied.
6. Install pulley to dimension as shown and
secure set screw to drive shaft.
7. Stretch belt over pulley and engage in
groove.
8. Follow start-up procedure.
Belt Replacement
1. Obtain access to the pulley side bearing
access plate if bearing access plates are
provided. Remove two bearing access plate
retaining screws and the access plate.
2. Using hexagonal wrench, loosen set screw
in bearing locking collar. Using light
and Pulley
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