Aaon RK Series User Manual download pdf (Page 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

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Aaon RK Series User Manual Page 10

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