Gorman-Rupp Pumps PAH8A60C-B 1537579 and up - Manual (Page 39)

OM-06455 PAH SERIES
MAINTENANCE & REPAIR PAGE E - 17
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 8 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 8. 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 bearing housing with the hard­
ware (15 and 16).
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
aid this process. The I.D. of the tube should be
slightly larger than the O.D. of the shaft sleeve (7).
Install the shaft sleeve O‐ring (8) in the groove in
the I.D. of the sleeve. Lubricate the O‐ring and the
O.D. of the shaft sleeve with “P-80
R
Emulsion” or
water. Do not use oil or any substitute lubricant
other than water.