Gorman-Rupp Pumps 612L20B-B 806819 and up - Manual (Page 29)

60 SERIES OM-01919
MAINTENANCE & REPAIR PAGE E - 10
Press the oil seal (42) into the seal plate until fully
seated with the lip positioned as shown in Figure
E-1.
The mechanical seal (3) is not normally reused be­
cause wear patterns on the finished faces cannot
be realigned during reassembly. This could result
in premature failure. If necessary to reuse an old
seal in an emergency, 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 O‐
rings and bellows 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 E-4).
IMPELLER
SHAFT
IMPELLER
RETAINER
ROTATING
ELEMENT
STATIONARY
ELEMENT
SEAL PLATE
SEAT
STATIONARY
OIL
SEAL
O‐RINGS
BELLOWS
SPRING
Figure E-4. 12590B Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Press the stationary subassembly (consisting of
the stationary seat, O‐rings and stationary ele­
ment) into the seal plate until fully seated. A push
tube cut from a length of plastic pipe would aid this
installation. The I.D. of the pipe should be approxi­
mately the same diameter as the I.D. of the seal
spring.