Greenheck O-Ring Axle Seal Replacement User Manual

These instructions explain how to replace blade
seals in the field. Axle (shaft) penetrations through
frame are protected by o-ring axle seals.The Viton
o-rings may deteriorate due to abrasion, wear,
oxidation or exposure to adverse chemicals.
Replace as necessary. See Figure 1 & 2.

1) Remove actuator crankarms and interconnect
linkage from axles. Smooth any burrs.

2) Remove external bearings and o-ring cover

plate to expose the o-ring. It may be easiest to
remove the o-ring stuffing box plate so as to
facilitate o-ring removal.

3) Remove the old o-ring and the red silicone

rubber gasket, if used, from the mounting
surface.

O-ring Axle Seal

Replacement Instructions

4) Install new red silicone gasket or apply a thin
layer of silicone caulk. Reinstall the o-ring
stuffing box plate over the mounting studs.

5) Lubricate the new o-ring with petroleum jelly

(Vaseline) and install into stuffing box plate.

6) Reinstall cover plate and external bearing.

Tighten until the red silicone rubber gasket
starts to squeeze from behind the o-ring
stuffing box.

7) Reinstall drive linkage.

Figure 1

Figure 2

Copyright © 2006 Greenheck Fan Corporation

O-ring Axle Seal Replacement