OM-07328
SUPER T SERIES
MAINTENANCE & REPAIR
PAGE E - 12
This seal is not designed for operation at
temperatures above 160
F (71
C). Do not
use at higher operating temperatures.
Lubricate the stationary seat O‐rings with water or
light oil, and install them in the stationary seat. In
stall the stationary seal element in the stationary
seat. Press this stationary subassembly into the
front of the seal plate (5) until it seats squarely
against the bore shoulder. A push tube made from
a piece of plastic pipe would aid this installation.
The I.D. of the pipe should be slightly larger than
the O.D. of the shaft sleeve.
Install the seal plate gasket (6). Position the seal
plate over the shaft and secure it to the bearing
housing with the hardware (8 and 24).
Be careful
not to damage the stationary element on the shaft
threads.
To prevent damaging the shaft sleeve O‐ring (27)
on the shaft threads, cover the threads with electri
cal or duct tape. Slide the O‐ring over the shaft until
it seats against the shaft shoulder. Remove the
tape covering the threads. Check to ensure that
the shaft threads are free of any tape residue and
clean as required before proceeding with seal
installation.
Lubricate the shaft sleeve (4) with a
small
amount
of light oil and slide the rotating subassembly (con
sisting of rotating element, bellows and retainer),
onto the sleeve until the rotating element is
just
flush
with the
undercut
end of the sleeve.
Slide the sleeve and subassembled seal onto the
shaft until the seal faces contact. Continue to push
the sleeve through the seal until the undercut end
seats against the shaft shoulder.
Install the seal spring. Lubricate the seal as indi
cated in
LUBRICATION
after the impeller is in
stalled.
If necessary to reuse an
old seal
in an emer
gency, carefully separate the rotating and station
ary seal faces from the bellows retainer and sta
tionary seat.
A new seal assembly should be installed
any time
the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema
ture failure.
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.
Carefully
wash all metallic parts in fresh cleaning
solvent and allow to dry thoroughly.
Do not
attempt to separate the rotating
portion of the seal from the shaft sleeve
when reusing an old seal. The rubber bel
lows will adhere to the sleeve during use,
and attempting to separate them could
damage the bellows.
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;
nev
er mix old and new seal parts
.
Install the stationary seal element in the stationary
seat. Press this stationary subassembly into the
seal plate bore until it seats squarely against the
bore shoulder. A push tube made from a piece of
plastic pipe would aid this installation. The I.D. of
the pipe should be slightly larger than the O.D. of
the shaft sleeve.
Slide the rotating portion of the seal (consisting of
the shaft sleeve, spring, bellows and retainer, and
rotating element) onto the shaft until the seal faces
contact.
Proceed with
Impeller Installation and Adjust
ment
.
