Gorman-Rupp Pumps 14A20-B 740693 and up - Manual (Page 31)

10 SERIES OM-00660
MAINTENANCE & REPAIR PAGE E - 8
Most cleaning solvents are toxic and
flammable. Use them only in a well ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­
ers.
Inspect the impeller shaft for damage. Small
scratches or nicks may be removed with a fine file
or emery cloth. If excessive wear exists, the shaft
will have to be replaced.
The seal is not normally reused because wear pat­
terns on the finished faces cannot be realigned
during reassembly. This could result in premature
failure. If necessary to reuse an old seal in an emer­
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 (72), or re­
place it if there are nicks or cuts on either end. If any
components 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 O‐
rings, bellows and shaft sleeve with water or a very
small amount of oil, and apply a drop of light lubri­
cating oil on the finished faces. Assemble the seal
as follows, (see Figure 3).
IMPELLER
SHAFT
IMPELLER
IMPELLER
SHIMS
SHAFT
SLEEVE
ELEMENT
STATIONARY
ROTATING
ELEMENT
STATIONARY
SEAL
SPRING
SEAL SEAT
SEAL PLATE
O‐RING
OIL SEAL
BELLOWS
DRIVE BAND
SPRING CENTERING
WASHER
Figure 3. Seal Assembly