AAON RK Series - Manual (Page 10)

10
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.
Note: Slight hand pressure against wheel rim will
lift weight of wheel from inner race of bearing to
assist bearing removal and installation.
CAUTION !
Protect hands and belt from possible sharp edges
of hole in Bearing Support Beam.
5. Loop the trailing end of the belt over the shaft (belt
is partially through the opening).
6. Reinstall the bearing onto the wheel shaft, being
careful to engage the two locating pins into the holes
in the bearing support beam. Secure the bearing with
two self locking nuts.
7. Install the belts around the wheel and pulley
according to the instructions provided with the belt.
8. Reinstall diameter seals or hub seal and tighten
retaining screws. Rotate wheel in clockwise direction
to determine that wheel rotates freely with slight drag
on seals.
9. Reinstall bearing locking collar. Rotate collar by
hand in the direction the wheel rotates (see label
provided on each cassette for wheel rotation).
10. Lock in position by tapping drift pin hole with
hammer and drift. Secure in position by tightening set
screw.
11. Reinstall Bearing Access Cover.
12. Apply power to wheel and ensure that the wheel
rotates freely without interference.
Belt Replacement