Gorman-Rupp Pumps 82H3-B 716123 and up - Manual (Page 27)

OM−00831 80 SERIES
MAINTENANCE & REPAIR PAGE E − 8
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, or replace it
if there are nicks or cuts on either end. If any com-
ponents 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 bel-
lows, sleeve and stationary seat 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 3).
IMPELLER
SHAFT
SEAL
PLATE
ROTATING
ELEMENT
SPRING
SEAT
RETAINER
SPRING
IMPELLER
ADJUSTING
SHIMS
IMPELLER
BELLOWS
SHAFT
SLEEVE
O-RING
STATIONARY
SEAT
Figure 3. 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.
Position the seal plate (27) on a flat surface with the
impeller side facing up. Apply oil to the stationary
seat O-ring and use thumb pressure to press the
stationary seat into the seal plate bore until fully
seated. A push tube made from a piece of plastic
pipe would aid this installation. The I.D. of the tube
should be approximately the same as the I.D. of the
seal spring.
Slide the assembled seal plate and stationary seat
over the impeller shaft (16) and temporarily secure
the seal plate to the pedestal (10) using two cap-
screws and nuts (1/2 UNC x 1 1/2 inch long, not
supplied).
Lubricate the O.D. of the shaft sleeve with water or
a very small amount of oil, and slide the rotating
portion of the seal assembly onto the shaft sleeve
until the face of the rotating element is just flush
with the chamfered end of the sleeve.