Gorman-Rupp Pumps 54J2-B 1424552 and up - Manual (Page 30)

50 SERIES OM−01337
MAINTENANCE & REPAIR PAGE E − 8
NOTE
Impeller shaft endplay should be between .002 and
.010 inch (0,05 mm to 0,25 mm). Add or remove
bearing shims to establish the correct endplay.
Lubricate the shaft in the area of the oil seal (24)
and press the oil seal into the bearing cap with the
lip positioned as shown in Figure 1. Use caution
not to roll or cut the lip of the oil seal on the shaft
keyway.
NOTE
Press the oil seal into the bearing cap far enough to
provide clearance between the seal lip and the im-
peller shaft keyway.
Replace the casing gasket (12) and secure the
pedestal to the pump casing using the nuts (32).
Lubricate the bearing cavity as indicated in LUBRI-
CATION at the end of this section.
Seal Reassembly and Installation
(Figures 1 and 4)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
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 seal spacer sleeve, 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 pack-
ing rings and spacer 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 4).