Gorman-Rupp Pumps 12B22-B 1059806 thru 1343819 - Manual (Page 28)

10 SERIES OM--00589--03
MAINTENANCE & REPAIR PAGE E -- 8
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 (61), or re-
place it if there are nicks or cuts on either end. If any
components 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 O-
rings and shaft sleeve (61) with water or a very
small amount of oil, and apply a drop of light lubri-
cating oil on the finished faces. Assemble the seal
as follows, (see Figure E---3).
IMPELLER
SHAFT
IMPELLER
IMPELLER
SHIMS
SHAFT
SLEEVE
WASHER
STATIONARY
ROTATING ELEMENT
SPRING CENTERING
SPRING
SEAL SEAT
SEAL PLATE
O-RINGS
OIL SEAL
BELLOWS
Figure E--3. 13294A Seal Assembly
This seal is not designed for operation at
temperatures above 160_F (71_C). Do not
use at higher operating temperatures.
Place the seal plate on a flat surface with the impel-
ler side down. Apply a light coat of oil to the oil seal
(31) and press it into the seal plate (35) with the lip
positioned as shown in Figure E---1.
Place the seal plate on a flat surface with the impel-
ler side up. Press the stationary subassembly
(consisting of the stationary seat, O-rings and sta-
tionary element) into the seal plate until the station-
ary seat bottoms against the seal plate bore. A
push tube cut from a length of plastic pipe would
aid this installation. The I.D. of the pipe should be
approximately the same diameter as the I.D. of the
seal spring.
NOTE
Apply a thin film of retaining compound between