Gorman-Rupp Pumps 81 1/2D52-B 1286723 and up - Manual (Page 26)

OM−00790 80 SERIES
MAINTENANCE & REPAIR PAGE E − 7
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Install the same thickness of bearing adjusting
shims (19) as previously removed. Reinstall the re-
taining ring (18) and check shaft endplay.
NOTE
Shaft endplay should be .002 to .010 inch (0,05 to
0,25 mm). Add or remove bearing adjusting shims
to obtain this endplay.
Install the slinger ring (21). Install any leveling
shims used under the bearing housing feet. Se-
cure the bearing housing to the base using the pre-
viously removed mounting hardware.
Seal Reassembly and Installation
(Figures 1 and 3)
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.
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 area of the shaft.
Small nicks and burrs can be removed using a fine
file or emery cloth. If any components are worn, re-
place 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 appli-
catrion.
To ease installation of the seal, lubricate the seal
area of the shaft with water or a very small amount
of oil, and apply a drop of light lubricating oil on the
finished faces. Assemble the seal as follows, (see
Figure 3).