OM−01155
0 SERIES
MAINTENANCE & REPAIR
PAGE E − 9
sparks, and flame. Read and follow all
precautions printed on solvent
containers.
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. If any components are worn, replace the com-
plete 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 shaft,
bellows and O-ring 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 fol-
lows, (see Figure 4).
STATIONARY
SEAT
IMPELLER
SHAFT
ROTATING
ELEMENT
DRIVE BAND
IMPELLER
RETAINER
BELLOWS
SPRING
SPRING
O−RING
SEAL GUARD
Figure 4. 25271−851 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_
F (71
_
C). Do not
use at higher operating temperatures.
Inspect the pinion shaft (1, Figure 2) for distortion,
nicks, scratches, or damage. Dress small nicks or
burrs with a fine file or emery cloth. If excessive
wear exists, refer to
GEARBOX DISASSEMBLY
and replace the shaft.
Lubricate the O-ring with light oil and install it in the
stationary seat. Place a clean tissue over the seal-
