Gorman-Rupp Pumps PA4A60C-B-E30 575/3 1482736 and up - Manual (Page 46)

OM−06440 PA SERIES
MAINTENANCE & REPAIR PAGE E − 19
gency, carefully wash all metallic parts in fresh
cleaning solvent and allow to dry thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non-oil based solvent and a clean, lint-free tissue.
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak-
age. Clean and polish the shaft sleeve, or replace it
if there are nicks or cuts on either end. If any com-
ponents are worn, replace the complete seal;
never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the shaft
sleeve O-ring and the external stationary seat O-
ring with a very small amount of light lubricating oil.
See Figure 9 for seal part identification.
SEAL PLATE
O-RINGS
IMPELLER
SHAFT
STATIONARY
SEAT
STATIONARY
ELEMENT
ROTATING
ELEMENT
DRIVE BAND
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
INTEGRAL
SHAFT
SLEEVE
SLEEVE
O-RING
SPRING
CENTERING
WASHER
SHEAR
RING
(SHEARED)
Figure 9. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
If the seal plate was removed, install the seal plate
gasket (5). Position the seal plate over the shaft
and secure it to the bearing housing with the hard-
ware (7 and 8).
To prevent damaging the shaft sleeve O-ring (26)
on the shaft threads, cover the threads with electri-
cal or duct tape. Slide the O-ring over the shaft until
it seats against the shaft shoulder. Remove the
tape covering the threads. Check to ensure that
the shaft threads are free of any tape residue and