Gorman-Rupp Pumps 82D1-EX13-X 1390156 and up - Manual (Page 28)

80 SERIES OM−06106
MAINTENANCE & REPAIR PAGE E − 10
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 O-rings 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).
INTERMEDIATE
O-RING
STATIONARY
SEAT
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
ROTATING
ELEMENT
ENGINE
CRANKSHAFT
SEAL
SLEEVE
SPRING CENTERING
WASHER
DRIVE BAND
Figure 4. 25271−841 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). How-
ever most petroleum products such as
gasoline are more efficiently handled at
ambient temperatures. Do not use at high-
er operating temperatures.
If the intermediate was removed, lay it on a flat sur-
face with the impeller side facing up.
Subassemble the O-ring into the groove in the sta-
tionary seat and press this subassembly into the in-
termediate bore until it seats squarely against the
shoulder. Slide the assembled intermediate and
stationary seat over the shaft and secure the inter-
mediate to the engine with the hardware (5 and 6).
When installing the intermediate, use caution not
to damage the stationary seat on the shaft threads.