Gorman-Rupp Pumps PAH3B60-4045H 1493144 and up - Manual (Page 46)

OM-06474 PAH SERIES
MAINTENANCE & REPAIR PAGE E - 23
Seal Reassembly and Installation
(Figures 6 and 10)
Most cleaning solvents are toxic and
flammable. Use them only in a well ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain­
ers.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema­
ture failure.
To ease installation of the seal, lubricate the shaft
sleeve O‐ring and the stationary element O‐ring
with a very small amount of light lubricating oil.
See Figure 10 for seal part identification.
SEAL PLATE
O‐RING
IMPELLER
SHAFT
STATIONARY
ELEMENT
ROTATING
ELEMENT
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
SHAFT
SLEEVE
SLEEVE
O‐RING
SPRING
CENTERING
WASHER
SHAFT
KEY
Figure 10. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_
F (71
_
C). Do not
use at higher operating temperatures.
If the seal plate was removed, install the seal plate
gasket (14). Position the seal plate over the shaft
and secure it to the pedestal with the hardware (16
and 17).
Press the stationary element and its O‐ring into the
seal plate until fully seated in the seal plate bore. A
push tube cut from a length of plastic pipe would