Gorman-Rupp Pumps 04E1-GHH 1076270 and up - Manual (Page 38)

OM−03688 0 SERIES
MAINTENANCE & REPAIR PAGE E − 13
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. 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 bel-
lows and stationary element O-ring with water or a
very small amount of light lubricating oil, and apply
a drop of light lubricating oil on the finished faces.
Assemble the seal as follows, (see Figure 4).
IMPELLER
SHAFT
STATION-
ARY SEAT
O-RING
ROTATING
ELEMENT BELLOWS
RETAINER SPRING
IMPELLER
ADJUSTING
SHIMS
IMPELLER
IMPELLER
KEY
PUMP
CASING
Figure 4. 25271−192 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 impeller shaft for distortion, nicks,
scratches, or damage to the shaft keyway. Dress
small nicks and burrs with a fine file or emery cloth.
If the shaft is defective, refer to GEARBOX DISAS-
SEMBLY and replace the shaft.
Lubricate the stationary element O-ring with a light
coat of oil. Place a clean, lint-free tissue over the
seal face, and use thumb pressure to press the ele-
ment and O-ring into the pump casing until fully
seated. Be careful not to damage the seal face. Af-
ter installation wipe the seal face in a concentric
pattern with a clean, lint-free cloth to remove any
fingerprints.