Gorman-Rupp Pumps 04B52-B 1346496 and up - Manual (Page 27)

0 SERIES OM-01232
MAINTENANCE & REPAIR PAGE E - 8
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. Discard the spring centering washer in­
cluded with the seal. It is not used in this applica­
tion.
To ease installation of the seal, lubricate the bel­
lows and O‐rings with water or a very small
amount of light lubricating oil, and apply a drop of
light lubricating oil on the finished faces. Assemble
the seal as follows, (see Figure 3).
O‐RING
STATIONARY
SEAT
SPRING
CENTERING
WASHER
SHAFT
SLEEVE
ROTATING
ELEMENT
SPRING
SEAL PLATE
SHAFT
IMPELLER
SHIMS
BELLOWS
RETAINER
Figure 3. 25285-856 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Position the seal plate (39) on a flat surface with the
impeller side facing up. If the wear ring (11) was re­
moved, press the replacement ring into the seal
plate until it seats squarely against the bore shoul­
der.
The wear ring must seat squarely in the
seal plate bore or binding and/or exces­
sive wear will result.
Lubricate the stationary seat O‐ring with water or
light oil, and press the stationary seat into the seal
plate until it is fully seated against the bore shoul­
der.