AAON RN Series Installation Operation & Maintenance page 84

To install wheel segments follow the steps
below. Reverse procedure for segment
removal.
Disconnect power from the wheel.
Gain access to the wheel and slide
wheel frame out of cabinet.
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
84
the third segment is installed. Rotate the
wheel 180º again to install the fourth
segment opposite the third. Repeat this
sequence with
segments.
Polymer Wheel Drive Motor and Pulley
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.
Polymer Wheel 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 hammer and drift (in drift pin hole)
tap collar in the direction of wheel
rotation to unlock collar. Remove collar.
3. Using socket wrench with extension,
remove two nuts which secure bearing
housing to the bearing support beam.
Slide bearing from shaft. If not removable
by hand, use bearing puller.
4. Form a small loop of belt and pass it
through the hole in the bearing support
beam. Grasp the belt at the wheel hub and
pull the entire belt down.
the remaining four