Gorman-Rupp Pumps 82D3-B 274955 and up - Manual (Page 26)

OM−00806 80 SERIES
MAINTENANCE & REPAIR PAGE E − 7
Pre-pack the bearings by hand (or use a bearing
packer if available) with No. 0 lithium base grease
until fully lubricated. Use a suitably sized sleeve
and arbor (or hydraulic) press to press the bear-
ings onto the shaft until fully seated against the
shaft shoulders.
NOTE
When installing the bearings, be sure to install them
with the offset of the bearings in the direction as
shown in Figure 1 (seals toward the outside of the
bearing cavity).
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
If removed, install the inboard bearing retaining
ring (7) in the groove in the pedestal.
Slide the shaft and assembled bearings into the
pedestal until the inboard bearing is fully seated
against the retaining ring.
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 shims (13) as
previously removed. Install the outboard bearing
retaining ring (11).
NOTE
Shaft endplay should be between .002 and .005
inch (0,05 to 0 ,12 mm). Add or remove bearing ad-
justing shims to achieve the correct endplay.
Install the slinger ring (16) and shaft key (10). Install
any leveling shims used under the pedestal feet.
Secure the pedestal to the base using the pre-
viously removed mounting hardware.
Lubricate the pedestal as indicated in LUBRICA-
TION at the end of this section.
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 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 bel-
lows with water or a very small amount of oil, and
apply a drop of light lubricating oil on the precision
finished faces. Assemble the seal as follows (see
Figure 3).