Gorman-Rupp Pumps 12D-1B20 1483730 and up User Manual

Page 26

10 SERIES

OM−06360

MAINTENANCE & REPAIR

PAGE E − 8

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 liner, or replace it if
there are nicks or cuts on either end. If any compo-
nents 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 seal liner 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 3).

SHAFT

SEAL

LINER

IMPELLER

SHIMS

STATIONARY WASHERS

ROTATING

ELEMENT

SPRING

INTERMEDIATE

PACKING RINGS

SPACER SLEEVE

STATIONARY

ELEMENTS

ROTATING

ELEMENT

Figure 3. GS625 Seal Assembly

This seal is not designed for operation at
temperatures above 110

_F (43_C). Do not

use at higher operating temperatures.

Position the inboard rotating element on the shaft
with the chamfered side toward the shaft shoulder
and slide it on until fully seated. A push tube cut
from a length of plastic pipe would aid this installa-
tion. The I.D. of the tube should be approximately
the same as the the I.D. of the seal spring.